Free Software
Here are links to free software packages I've collected...
Mathematics software
Geogebra--graphing software
Winplot--graphing software
Graph--graphing software
Statdisk--statistical software (free if you own certain textbooks by Triola)
Winstats--statistical software
Wingeom--software allowing you to create 2D and 3D geometric constructions
WolframAlpha--web-based computational search engine
Web Browsers
Microsoft Internet Explorer--web browser
Mozilla Firefox--web browser
Google Chrome--web browser
Apple Safari--web browser
Opera--web browser
Presentation software
Jarnal--notetaking software that allows you to annotate PDF documents
Xournal--notetaking software that allows you to annotate PDF documents
Cursor Attention--cursor highlighting software
Virtual Magnifying Glass 3.3.2--virtual magnifying class software
Mouse Jiggler--keeps monitor active by simulating a slight cursor movement
Jing--screen-capturing software
Prezi--presentation creation software without creating "slides"
PDF Creation software
Miscellaneous Software
Nvu--HTML editing software
Showmewhatswrong--software that allows others to create and share (with you) a video (with no software installed) that records activity on their desktop
Freemind--mindmapping software
Chatzy--instant messaging software
ShowDocument--collaborative whiteboard (handwriting) and document sharing software
Wiziq--collaborative whiteboard (handwriting) and document sharing software
Imagination Cubed--online website that allows multiple people to draw on a shared "whiteboard."
Doodle--software enabling you to schedule an event or create a survey
Tiny URL--website that shortens any URL
WinShell--LaTeX editor
TeXniCenter--LaTeX editor
MikTeX--LaTeX distribution
7-zip--software to "zip" and "unzip" files
OpenOffice--software suite for creating word-processing documents, spreadsheets, databases, presentations, etc.
Dropbox--software that serves as a secure, online storage location for your files
SugarSync--software that serves as a secure, online storage location for your files
TweetDeck--software that allows you to monitor various social media sites via a single interface