brace - toolkit compatible with multiple Linux distros that allows for installation of handpicked applications, along with corresponding configs that have been tuned for reasonable privacy and security:
https://github.com/divestedcg/brace
Dark Crystal is a set of protocols, libraries, techniques and guidelines for secure management of sensitive data such as cryptographic keys:
https://darkcrystal.pw/
FFsubsync - Language-agnostic automatic synchronization of subtitles with video, so that subtitles are aligned to the correct starting point within the video:
https://github.com/smacke/ffsubsync