Audacity: a great open source audio software for recording and editing sounds, for multiple platforms.
AVG free: a decent antivirus software
Boycott Starforce: Most hideous copy protection ever deserves to be boycotted. Includes list of games which have Starforce copy protection.
Brave browser for ad-free surfing
CDEx: good CD extractor and MP3 converter
Inkscape for drawing
Paint.net for drawing
SumatraPDF for viewing PDF files
Telegram for secure messaging and calls
WinSCP: an open source FTP client with SFTP option
VLC player: a multi-platform media player that supports most audio and video formats.
Android studio for developing Android apps
Allegro: a free game programming library for C/C++ for multiple platforms
Code::Blocks: an open-source cross-platform IDE for C/C++
Simple DirectMedia Library: a cross-platform multimedia library. I used this library in Operation Cleaner 2.
Updated 4.2.2023