ScreenWings is a free anti-screenshoting software that prevents (malicious) software from capturing your screens:
https://schiffer.tech/screenwings.html

Blah DNS - a small hobby ads block dns project with doh, dot, dnscrypt support:
https://blahdns.com

eulaurarien - generates a host list of first-party trackers for ad-blocking:
https://git.frogeye.fr/geoffrey/eulaurarien

Instantly translate between over 90 languages with Translatium:
https://translatiumapp.com

Liberch is an open source search engine that gets results from DuckDuckGo, caches them, then presents them (combined with previously cached results) using it's own ranking algorithm:
https://gitlab.com/Voltist/liberch

BrowserGap Community Edition - simple remote browser isolation application:
https://github.com/dosycorp/browsergap.ce

Meterpreter_Defender - an application for detecting and defending against in-memory hacking tools and exploitations:
https://github.com/zelon88/Meterpreter_Defender

Shield free - intelligent application protection that stops malicious traffic and prevents sensitive data exposure without adding overhead:
https://www.templarbit.com/shield/

Igloo simplifies Windows administration by offering pre-made aliases for lengthy PowerShell commands:
https://easyigloo.org

Dashob - a web browser with variable size web tiles to see multiple websites on a board and run it as a presentation:
https://dashob.com

privacyIDEA is a modular authentication server that can be used to enhance the security of your existing applications like local login, VPN, remote access, SSH connections, access to web sites or web portals with two factor authentication:
https://www.privacyidea.org

Rsync time backup offers Time Machine-style backup:
https://github.com/laurent22/rsync-time-backup

BeGoneAds is a script that puts some popular hosts file lists into the systems hosts file as a adblocker measure:
https://github.com/anned20/begoneads

Mathics - a free, light-weight alternative to Mathematica:
https://mathics.github.io

Hivecode free tracks if somebody else is using your sensitive data:
https://hivecode.io

Fossies:
https://fossies.org

WindowsRemix:
https://www.windowsremix.com/software