ZIATDINOV's LIST of Free LEGAL Software (자유 소프트웨어)

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Do you have any recommendations? Please contact me at ziatdinov@kmu.ac.kr with any suggestions.

Visitors of www.ziatdinov-lab.com from January 1, 2020 to October 6, 2021

(142 countries; 1897 cities, 523 cities with average session duration greater than 10 seconds)


Rushan Ziatdinov is a Professor in the Department of Industrial Engineering at Keimyung University, Daegu, South Korea. He obtained his MS degree in the area of Mathematical Methods in Economics and Control (Management) in Mechanical Engineering Enterprises from Kama State Polytechnic Institute (now a part of Kazan Federal University, a top ranked and prestigious university in Russia) and has a PhD degree in Mathematical Modelling, Numeric Methods, Program Software from Ulyanovsk State University (formerly known as Lomonosov Moscow State University in Ulyanovsk) in Russia. In the beginning of his scientific career he held the positions of Assistant Professor in the Department of Geometry and Mathematical Modelling at Tatar State University of Humanities and Education and in the Department of Special Mathematics at Tupolev Kazan National Research Technical University (Kazan University of Aviation), Kazan, Russia. He then moved to Seoul National University, South Korea, where he was a postdoc in the Computer-Aided Design and Information Technology Lab (CADIT Lab) of the Department of Naval Architecture and Ocean Engineering. From 2011-2015 he was a faculty member in Istanbul, Turkey. In July 2013, he was selected by SAMSUNG SDI and was invited to work in South Korea, but Prof. Ziatdinov decided to continue his job as a professor. He was a Visiting Professor at Seoul National University (2012, 2014, 2016) and Shizuoka University (2013, 2014, 2020), one of the leading national universities in Japan.

His research interests are very wide and include computer-aided geometric design, CAD/CAM, visualization, the use of computer models in science and engineering, instructional technologies, computer and realistic modelling. Professor Ziatdinov is an editor for several engineering and educational journals, as well as the author of a number of peer-reviewed publications published in top journals.

Professor Ziatdinov enjoys composing and reading poems, quotes, and sayings, as well as photography and video production. He also enjoys playing chess and proposed one of the chess variants.

Prof. Rushan Ziatdinov has been a Guest Columnist at the Korea Times (a sister paper of 한국일보), South Korea's oldest English newspaper, since September 2021. His writings can be found on the Internet (here or here).

Video Conferencing | 비디오 컨퍼런싱 | Программы для вебинаров

  1. Jitsi is a collection of free and open-source multiplatform voice, videoconferencing and instant messaging applications for the web platform, Windows, Linux, Mac OS X and Android | https://jitsi.org/jitsi-meet/ | YouTube Tutorial

  2. Zoom (Basic plan has a 40 minutes time limit on meetings with three or more total participants) | https://zoom.us/ | YouTube Tutorial

  3. Ekiga | https://www.ekiga.org/download-ekiga-binaries-or-source-code | YouTube Tutorial

  4. OpenMeetings | https://openmeetings.apache.org/ | YouTube Tutorial

Interactive Whiteboards | 대화식 전자칠판 | Интерактивные доски


  1. https://www.classroomscreen.com/ | YouTube Tutorial

  2. https://www.twiddla.com/ | YouTube Tutorial

  3. https://awwapp.com/ | YouTube Tutorial

  4. https://app.ziteboard.com/ | YouTube Tutorial

  5. https://whiteboardfox.com/ | YouTube Tutorial

  6. https://www.webwhiteboard.com/ | YouTube Tutorial

Apps and Software

  1. OpenBoard is an open source cross-platform teaching software for interactive whiteboard designed primarily for use in schools and universities. It can be used both with interactive whiteboards or in a dual-screen setup with a pen-tablet display and a beamer | https://openboard.ch/index.en.html

  2. gInk is an easy to use on-screen annotation software inspired by Epic Pen | https://github.com/geovens/gInk/releases/

Do you have any recommendations? Please contact me at ziatdinov@kmu.ac.kr with any suggestions.

Screen Annotation Software

  1. gInk is an on-screen annotation software under Windows, used to help to improve my presentations and demonstrations, and to help to work on temporary thoughts which need to be noted beside something on the screen | https://github.com/geovens/gInk/releases | https://github.com/geovens/gInk/releases/download/v1.0.7/gInk_v1.0.7.zip

  2. ZoomIt is a screen zoom and annotation tool for technical presentations that include application demonstrations | https://zoomit.en.softonic.com/ | YouTube Tutorial

Video Processing | 영상 편집 | Обработка видео

  1. VirtualDub is a free and open-source video capture and video processing utility for Microsoft Windows written by Avery Lee. It is designed to process linear video streams, including filtering and recompression | http://www.virtualdub.org/

  2. VSDC Free Video Editor | http://www.videosoftdev.com/free-video-editor/download | YouTube Channel

  3. Shotcut (샷컷 ) | https://shotcut.org/ | YouTube Tutorial

  4. Blender | https://www.blender.org/ | Help | YouTube Channel

  5. Video Pad Video Editor | https://www.nchsoftware.com/videopad/index.html | YouTube Tutorial

  6. Kdenlive | https://kdenlive.org/ | YouTube Tutorial

  7. OpenShot (Linux) | https://www.openshot.org/ | YouTube Tutorial

  8. Pitivi (Linux) | http://www.pitivi.org/ | YouTube Tutorial

  9. Avidemux | http://avidemux.sourceforge.net/ | YouTube Tutorial

  10. HandBrake is a free and open-source transcoder for digital video files, originally developed in 2003 by Eric Petit to make ripping a film from a DVD to a data storage device easier | https://handbrake.fr/

Content Analysis and Text Mining | 컨텐츠 분석 및 텍스트 마이닝 | Анализ контента и интеллектуальный анализ текста

  1. WordStat is a text mining and content analysis program. It is mostly used for web site business intelligence and competitive analysis, sentiment analysis, open-ended question content analysis, and topic extraction from social media data, among other things. | https://en.wikipedia.org/wiki/WordStat | https://provalisresearch.com/products/content-analysis-software/

Video Analysis Software | Анализ видео

  1. Tracker is a free video analysis and modeling tool built on the Open Source Physics (OSP) Java framework. It is designed to be used in physics education. | https://physlets.org/tracker/

  2. Kinovea is a video annotation tool designed for sport analysis. It features utilities to capture, slow down, compare, annotate and measure motion in videos | https://www.kinovea.org/

Animation | 애니메이션 | Компьютерная анимация

Drawing Diagrams | 도면 다이어그램 | Создание диаграмм

  1. Diagrams.net | https://www.draw.io/ | https://www.diagrams.net/

  2. Dia | http://dia-installer.de/

  3. Pencil is a standalone app or Firefox extension that lets you create diagrams or UI mockups | https://pencil.evolus.vn/

  4. PlantUML is an open-source tool that uses simple textual descriptions to draw UML diagrams. The generator can be run anywhere within JVM and integrated with various application such as wiki, text editor, IDE, programming language, documentation generator, and others | https://plantuml.com/

  5. AutoDraw | https://www.autodraw.com/

Creating Infographics | 인포메이션 그래픽 | Инфографика

Desktop Publishing | 탁상출판 | Настольные издательские системы

  1. Scribus | https://www.scribus.net/

  2. Laidout is desktop publishing software built from the ground up with imposition in mind | https://laidout.org/

Do you have any recommendations? Please contact me at ziatdinov@kmu.ac.kr with any suggestions.

E-book Software | Софт для электронных книг

Virtual Reality | 가상현실 | Виртуальная реальность

  1. VirBELA's immersive software enables next-generation remote collaboration. Used for remote teams, distance learning, and more. The future of work is here | https://www.virbela.com/ | YouTube Channel

  2. vAcademia has everything you need for effective classes and lectures: convenient classrooms, interactive whiteboards, text and voice communication, and web camera support | http://vacademia.com/ | YouTube Channel

  3. Second Life | https://secondlife.com/

  4. Unreal Engine | https://www.unrealengine.com/en-US/what-is-unreal-engine-4

  5. OpenSpace3D | https://www.openspace3d.com/lang/en/support/download/ | YouTube Channel

  6. Active Worlds | https://www.activeworlds.com/ | YouTube Tutorial

  7. IMVU (avatar based social experience) | https://secure.imvu.com/welcome/ftux/

"vAcademia is a 3D virtual world designed for collaborative learning. It enables a new approach to educational activities in virtual worlds, which is based on a new vision of content and learning process. The most distinct feature of vAcademia is 3D recording which allows capturing everything in a given virtual world location in dynamics. The resultant recordings can be not only watched later, but also visited, providing students with a collaboration space and giving a sense of presence. 3D recording is conceptually different from video recording or screen capturing. In such a manner, vAcademia supports a new type of digital content – 3D recording or virtcast which is created based on synchronous activities. In addition, this platform has an integrated set of tools for collaborative learning which substitute those commonly used in physical classrooms, but also allows implementing new learning scenarios that are not possible or costly in reality. " (source)

"VirBELA is a virtual reality company that connects remote workers from around the world in an online environment. They work, collaborate and talk exactly as they would do in the real world, except there is no commute and no one has to wear a tie (although you can change your avatar’s clothes each day). .. What is it like inside VirBELA’s virtual workplace? Think of it like a large sunny university or corporate campus. There are communal meeting spaces where employees can have impromptu chats; auditoriums that can hold hundreds (and can quickly expand if more space is needed); offices where leadership can schedule meetings; and, of course, the speedboat. Yes, there is a speedboat, great for informal discussions or just a quick break from the workday. " (source)

Virtual Learning Environments During Pandemic, The Korea Times, 2021

Nobody could predict the impact that COVID-19 would have on our world; it changed so much of our daily routines. The stigma of living in the new normal is haunting. As unhinged, to some extent, as it might seem, and maybe even unrealistic, the world doesn't stop revolving and functioning even as such a detrimental health crisis falls upon its shoulders. A lot of changes have had to take place within the ongoing duration of the COVID-19 virus outbreak.

One of those changes made online learning a must, but it's quite a win-win situation. It's common knowledge that today's generation is greatly knowledgeable when it comes to technology due to living in a highly-digitized world. It's rational to utilize the wonders that technology brings into continuing the practices adopted and implemented by the education sector globally, but now through online learning programs.

Continue reading at https://www.koreatimes.co.kr/www/opinion/2021/10/197_316574.html

Learning Management Systems | 학습 관리 시스템 | Системы управления обучением

  1. Moodle is an open source Course Management System (CMS), also known as a Learning Management System (LMS) or a Virtual Learning Environment (VLE). It has become very popular among educators around the world as a tool for creating online dynamic web sites for their students | https://moodle.org/

  2. edX is a platform for education and learning with more than 20 million learners. edX delivers courses for curious minds on topics ranging from data and computer science to leadership and communications | https://www.edx.org/

  3. Chamilo is an open-source (under GNU/GPL licensing) e-learning and content management system, aimed at improving access to education and knowledge globally | https://campus.chamilo.org/

Online Translators | Онлайн переводчики

Computer Graphics | 컴퓨터 그래픽스 | Компьютерная графика

  1. Blender | https://www.blender.org/ | https://download.blender.org/release/

  2. Unity 3D | https://unity.com/

  3. MakeHuman is free and open source 3D computer graphics middleware designed for the prototyping of photorealistic humanoids | http://www.makehumancommunity.org/

  4. GIMP is a free and open-source raster graphics editor used for image retouching and editing, free-form drawing, converting between different image formats, and more specialized tasks | https://www.gimp.org/

  5. Inscape is professional quality vector graphics software | https://inkscape.org/

  6. Krita is a professional free and open source painting program | https://krita.org/en/

  7. Caesium (image compression) | https://saerasoft.com/caesium/#downloads

Do you have any recommendations? Please contact me at ziatdinov@kmu.ac.kr with any suggestions.

Concept Maps | Концептуальные карты

Online English Dictionaries | Онлайн словари английского языка

  1. Cambridge dictionary | https://dictionary.cambridge.org/

  2. Longman dictionary | https://www.ldoceonline.com/

  3. American heritage dictionary | https://ahdictionary.com/

  4. Dictionary by Merriam-Webster | https://www.merriam-webster.com/

  5. Oxford learner's dictionaries | https://www.oxfordlearnersdictionaries.com/

  6. Linguee | https://www.linguee.com/

  7. Macmillan dictionary | https://www.macmillandictionary.com/

  8. WordReference | http://www.wordreference.com/

  9. The free dictionary by Farlex | http://www.thefreedictionary.com/

  10. ReversoContext | http://context.reverso.net/translation/

  11. Urban dictionary | https://www.urbandictionary.com/

  12. Word learner | https://word-learner.com/

  13. Collins dictionary | https://www.collinsdictionary.com/

  14. Thesaurus | https://www.thesaurus.com/

  15. Ozdic | http://ozdic.com/

  16. Dictindustry (technical dictionary) | http://en.dictindustry.com/

  17. OneLook has more than five million words in more than 900 online dictionaries | https://www.onelook.com/

  18. Technical English dictionaries and glossaries | http://www.susana-translations.de/dicenglish.htm

Collaborative development of frequency dictionaries, The Korea Times, 2022

The knowledge of languages is a competitive advantage for humans because it can be extremely beneficial for one's future and career. Language acquisition has been proven to increase a learner's cognitive function, which includes ― but is not limited to ― improved problem-solving abilities and memory function.

Vocabulary learning is crucial to language acquisition, according to Jeanette Decarrico (2001), whether the language is a first, second or foreign language. After people have learned vocabulary in their first language (L1), also known as the "native language" or "mother tongue," the process of acquiring vocabulary in the second language (L2), referred to as second language vocabulary acquisition, occurs.

Continue reading at

System Simulation | 시스템 시뮬레이션 | Имитационное моделирование

  1. AnyLogic is the leading simulation software for business, utilized worldwide in many industries, including logistics, manufacturing, mining, healthcare, etc. [website]

  2. Arena (students version only) | https://www.arenasimulation.com/academic/students

  3. Modelica is an object-oriented, declarative, multi-domain modeling language for component-oriented modeling of complex systems | https://www.modelica.org/

  4. OpenModelica is an open-source Modelica-based modeling and simulation environment intended for industrial and academic usage | https://openmodelica.org/

  5. Simantics System Dynamics is a free and open source system dynamics modelling software with stock and flow modelling, hierarchical models and array variables | http://sysdyn.simantics.org/

  6. ASCEND is an open source, mathematical modelling chemical process modelling system developed at Carnegie Mellon University since late 1978 | http://ascend4.org/Main_Page

  7. NetLogo is a programming language and integrated development environment (IDE) for modeling | http://ccl.northwestern.edu/netlogo/

  8. TRUE is a tool for modeling, simulating, analyzing and optimizing multidomain dynamic applications | https://www.true-world.com/htm/en/index.html

Mathematics and Computing | 수학과 컴퓨터 | Математика и СКМ

  1. Scilab | https://www.scilab.org/

  2. OCTAVE | https://www.gnu.org/software/octave/

  3. GeoGebra | https://www.geogebra.org/

  4. FreeFem++ is a programming language and a software focused on solving partial differential equations using the finite element method | https://freefem.org/

  5. FreeMat is a free open-source numerical computing environment and programming language, similar to MATLAB and GNU Octave | http://freemat.sourceforge.net/

  6. Desmos is an advanced graphing calculator implemented as a web application and a mobile application written in JavaScript | https://www.desmos.com/

  7. Free computer algebra systems | http://maxima.sourceforge.net/compalg.html

Plotting Graphs

  1. Veusz is a scientific plotting and graphing program with a graphical user interface, designed to produce publication-ready 2D and 3D plots | https://veusz.github.io/

Do you have any recommendations? Please contact me at ziatdinov@kmu.ac.kr with any suggestions.

Statistics | 통계학 | Статистические пакеты

  1. R programming language | https://www.r-project.org/

  2. JASP | https://jasp-stats.org/

  3. PSPP | https://www.gnu.org/software/pspp/

  4. PAST 3.x | https://folk.uio.no/ohammer/past/

  5. Jamovi | https://www.jamovi.org/

  6. RegressIT (Excel add-in) | https://regressit.com/index.html

  7. Zelig | https://zeligproject.org/

  8. OpenStat | https://openstat.info/OpenStatMain.htm

  9. Other software | http://statistiksoftware.com/free_software.html

  10. CODAP is free educational software for data analysis. This web-based data science tool is designed as a platform for developers and as an application for students in grades 6-14 | https://codap.concord.org/

  11. iNZight was initially designed for New Zealand high schools, allowing students to quickly and easily explore data and understand some statistical ideas (using the companion program VIT) | https://www.stat.auckland.ac.nz/~wild/iNZight/?fbclid=IwAR1E5L4EgBkHu6Ck4kP72mfXqCTSr_yiSXuOEdCN7_suGBMJoUpAX3p-Ze0

Word Processors | 워드 프로세서 | Текстовые редакторы

  1. Apache OpenOffice | https://www.openoffice.org/

  2. LibreOffice | https://www.libreoffice.org/

  3. LaTeX | https://www.latex-project.org/ | http://www.tug.org/interest.html#free

  4. WPS Office | https://www.wps.com/

  5. OnlyOffice is an open source office suite developed by Ascensio System SIA, a company with headquarters in Riga, Latvia. It features online document editors, platform for document management, corporate communication, mail and project management tools | https://www.onlyoffice.com/download-desktop.aspx | YouTube Tutorial

Electronic Spreadsheets | 스프레드시트 | Электронные таблицы

Voice and Sound | 보이스 앤 사운드 | Работа со звуком

  1. Spek | Free acoustic spectrum analyzer | http://spek.cc/

  2. Audacity | An open-source digital audio editor and recording application software | https://www.audacityteam.org/

  3. Balabolka is a Text-To-Speech (TTS) program | https://balabolka.en.softonic.com/ | http://www.cross-plus-a.com/balabolka.htm

  4. Voice Changer | https://voicechanger.io/

  5. Voice notebook is a voice recognition application for converting speech to text | https://voicenotebook.com/

  6. Otter (free basic plan) lets you record, transcribe, search and share your voice conversations | https://otter.ai/

  7. Voice notes | https://record.reverb.chat/

Games | 게임 | Компьютерные игры

  1. Cross+A is to simplify the solution of crosswords, word-based puzzles, sudokus, nonograms and other logic puzzles | http://www.cross-plus-a.com/

  2. List of open-source video games | https://en.wikipedia.org/wiki/List_of_open-source_video_games

Computer Maintenance Programs | 컴퓨터유지보수내역서

  1. BleachBit is a free and open-source disk space cleaner, privacy manager, and computer system optimizer | https://www.bleachbit.org/

  2. Glary Utilities is a powerful and all-in-one utility for cleaning your PC | https://www.glarysoft.com/

Antivirus | 바이러스 검사 소프트웨어 | Антивирусы

  1. Clam AntiVirus is a free software, cross-platform and open-source antivirus software toolkit able to detect many types of malicious software, including viruses | https://www.clamav.net/

  2. ClamWin | http://www.clamwin.com/content/view/18/46/

  3. Moon Secure AV is an open source antivirus currently using the ClamAV engine. It is designed to detect viruses, Trojans and spyware, just like any antivirus software | http://moonsecure.net/df/

Do you have any recommendations? Please contact me at ziatdinov@kmu.ac.kr with any suggestions.

Project Management | 프로젝트 관리 | Управление проектами

Computational Fluid Dynamics | 전산 유체 역학 | Вычислительная гидродинамика

  1. OpenFOAM | https://www.openfoam.com/

  2. Elmer | https://www.csc.fi/web/elmer

  3. KRATOS Multiphysics | https://www.cimne.com/kratos/

  4. CFDTool (works only in MATLAB) | https://www.cfdtool.com/

  5. FEATool Multiphysics (works only in MATLAB) | https://www.featool.com/

  6. FEATFLOW (can be used from MATLAB with the FEATool Multiphysics GUI interface) | http://www.featflow.de/en/software/featflow.html

  7. Code_Saturne | https://www.code-saturne.org/cms/

  8. ENigMA - Extended Numerical Multiphysics Analysis (C++ template library) | https://github.com/bjaraujo/ENigMA

  9. SU2 | https://su2code.github.io/ | YouTube channel

Integrated Development Environment | 통합 개발 환경 | Интегрированные среды разработки

  1. Top Integrated Developer Environments (IDEs): 51 powerful dev environments for streamlined development | https://stackify.com/top-integrated-developer-environments-ides/

  2. Visual Studio (for C* programming in Windows) | https://visualstudio.microsoft.com/

  3. CodeLite is an open source, free, cross platform IDE specialized in C, C++, PHP and JavaScript (mainly for backend developers using Node.js) programming languages which runs best on all major Platforms ( OSX, Windows and Linux ) | https://codelite.org/

  4. Aptana Studio is an open-source integrated development environment (IDE) for building web applications. Based on Eclipse, it supports JavaScript, HTML, DOM and CSS with code-completion, outlining, JavaScript debugging, error and warning notifications and integrated documentation. Additional plugins allow Aptana Studio to support Ruby on Rails, PHP, Python, Perl, Adobe AIR, Apple iPhone and Nokia WRT (Web Runtime). Aptana Studio is available as a standalone on Windows, Mac OS X and Linux, or as a plugin for Eclipse | http://www.aptana.com/

  5. Eclipse is an integrated development environment (IDE) used in computer programming. It contains a base workspace and an extensible plug-in system for customizing the environment. Eclipse is written mostly in Java and its primary use is for developing Java applications, but it may also be used to develop applications in other programming languages via plug-ins, including Ada, ABAP, C, C++, C#, Clojure, COBOL, D, Erlang, Fortran, Groovy, Haskell, JavaScript, Julia, Lasso, Lua, NATURAL, Perl, PHP, Prolog, Python, R, Ruby (including Ruby on Rails framework), Rust, Scala, and Scheme. It can also be used to develop documents with LaTeX (via a TeXlipse plug-in) and packages for the software Mathematica. Development environments include the Eclipse Java development tools (JDT) for Java and Scala, Eclipse CDT for C/C++, and Eclipse PDT for PHP, among others | https://www.eclipse.org/

  6. Xcode is an integrated development environment for macOS containing a suite of software development tools developed by Apple for developing software for macOS, iOS, iPadOS, watchOS, and tvOS | https://developer.apple.com/xcode/ide/

  7. jGRASP is a development environment that includes the automatic creation of software visualizations. It produces static visualizations of source code structure and visualizations of data structures at runtime | https://www.jgrasp.org/

  8. Code::Blocks is a free C++ IDE built to meet the most demanding needs of its users. It is designed to be very extensible and fully configurable | http://codeblocks.org/

  9. Qt contains a comprehensive set of highly intuitive and modularized C++ library classes and is loaded with APIs to simplify your application development. Qt produces highly readable, easily maintainable and reusable code with high runtime performance and small footprint – and it's cross-platform | https://www.qt.io/product/framework

  10. Bloodshed Dev-C++ is a full-featured Integrated Development Environment (IDE) for the C/C++ programming language | https://www.bloodshed.net/

  11. Ultimate++, also called U++, is a Small C++ cross-platform rapid application development framework focused on programmers productivity. It includes a set of libraries (GUI, SQL, etc..), and an integrated development environment | https://www.ultimatepp.org/

  12. Anjuta is an integrated development environment written for the GNOME project. It has support for C, C++, Java, JavaScript, Python and Vala programming language | http://anjuta.org/

  13. Cevelop is a one-stop download that includes all the plug-ins that you need to develop modern C++ code | https://cevelop.com/

  14. Orwell Dev-C++ is a Portable (IDE) Integrated Development Environment and Compiler for the C++ programming language. It's a maintained version of Dev-C++ which features an updated MinGW compiler and updated code | http://orwelldevcpp.blogspot.com/

  15. Microsoft Small Basic puts the fun back into computer programming. With a friendly development environment that is very easy to master, it eases both kids and adults into the world of programming | https://smallbasic-publicwebsite.azurewebsites.net/

  16. ZinjaI is a lightweight Cross-platform IDE for programming with C/C++, initially aimed to be used in classroom for learning C++, but powerful enough to manage complex projects as ZinjaI itself | http://zinjai.sourceforge.net/

  17. The Ecere IDE is a complete development environment for editing code, designing graphical user interfaces, managing and building projects as well as debugging | https://ecere.org/

  18. DrPython is a highly customizable text editor geared towards writing programs in Python quickly and easily. It is written in Python using the wxPython toolkit (which makes use of the Scintilla text control internally) | http://drpython.sourceforge.net/

  19. Embitz is a free C/C++ IDE built to meet the most demanding needs of its users working in the field of embedded software development It is designed to be very extensible and fully configurable | https://www.embitz.org/

  20. Quincy 2005 is simple, free C/C++ Programming IDE for Windows | http://www.codecutter.net/tools/quincy/

Operating Systems | 운영 체제 | Операционные системы

  1. Pop! OS | https://system76.com/pop

  2. Zorin OS | https://zorinos.com/

  3. FreeBSD is an operating system used to power modern servers, desktops, and embedded platforms | https://www.freebsd.org/

  4. ReactOS is a free and open-source operating system for amd64/i686 personal computers intended to be binary-compatible with computer programs and device drivers made for Windows Server 2003 and later versions of Windows | https://reactos.org/

  5. FreeDOS is a free operating system for IBM PC compatible computers. It intends to provide a complete DOS-compatible environment for running legacy software and supporting embedded systems. FreeDOS can be booted from a floppy disk or USB flash drive | https://www.freedos.org/

  6. Haiku is a free and open-source operating system compatible with the now discontinued BeOS. Its development began in 2001, and the operating system became self-hosting in 2008 | https://www.haiku-os.org/

  7. MenuetOS is an operating system with a monolithic preemptive, real-time kernel written in FASM assembly language. The system also includes video drivers | http://www.menuetos.net/

  8. KolibriOS is a tiny yet incredibly powerful and fast operating system. This power requires only a few megabyte disk space and 8MB of RAM to run | https://kolibrios.org/en/

  9. AROS Research Operating System is a free and open-source multi media centric implementation of the AmigaOS 3.1 APIs. Designed to be portable and flexible, ports are currently available for x86-based and PowerPC-based PCs in native and hosted flavors, with other architectures in development | https://aros.sourceforge.io/

  10. MorphOS is a lightweight, highly efficient and flexible media-centric operating system | https://www.morphos-team.net/

  11. DexOS is a 32-bit operating system written in x86 assembly. It is designed for coders that want direct access to all hardware, with well-commented code and documentation | https://dex-os.github.io/

  12. Wayne OS is a PC operating system based on Chromium OS; an open-source of Google Chrome OS that is popular in US education market | https://www.wayne-inc.com/

Programming Languages | 프로그래밍 언어 | Языки программирования

  1. Julia is a high-level, high-performance, dynamic programming language. While it is a general purpose language and can be used to write any application, many of its features are well-suited for high-performance numerical analysis and computational science | https://julialang.org/

  2. Nim is a statically typed compiled systems programming language. It combines successful concepts from mature languages like Python, Ada and Modula | https://nim-lang.org/

  3. Programming without coding technology | https://sourceforge.net/projects/doublesvsoop/

Biomechanics | 생물역학 | Биомеханика

  1. OpenSim is an open source software for biomechanical modeling, simulation and analysis I | http://simtk.org/projects/opensim/

Human Resources | 인적자원 | Управление персоналом

Free Portable Apps and Software

  1. Over 400 portable apps | https://portableapps.com/apps

  2. Wikipedia open-source software | https://en.wikipedia.org/wiki/List_of_free_and_open-source_software_packages#Desktop_publishing

  3. Awesome Open Source YouTube channel | https://www.youtube.com/channel/UCwFpzG5MK5Shg_ncAhrgr9g

  4. The complete open-source and business software platform | https://sourceforge.net/

  5. Free apps and resources to support distance learning in schools affected by the coronavirus outbreak | https://koulu.me/

  6. Software Notes by Steven K. Baum | http://barataria.tamu.edu/~baum/soft.html

  7. Awesome Open Source YouTube Channel | https://www.youtube.com/c/AwesomeOpenSource/videos

Do you have any recommendations? Please contact me at ziatdinov@kmu.ac.kr with any suggestions.