www.malwarebytes.com
Windows, Mac, Android, iOS, ChromeOS
Malwarebytes is a free virus scanner that can clean the computer of malicious software, viruses, adware and spyware.
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makeavi.sourceforge.net
Windows
MakeAVI takes pictures and combines them into a video file.
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maxima.sourceforge.net
Windows, Mac, Linux
Maxima is a free computer algebra system.
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www.moodle.org
Windows, Mac, Linux
Moodle is an open-source learning management system (LMS).
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