RetroArch - RetroArch is a frontend for emulators, game engines and media players.
Dabble Writer - Writing software for novelists.
Batocera.linux - Batocera.linux is an open-source and completely free retro-gaming distribution that can be copied to a USB stick or an SD card with the aim of turning any computer/nano computer into a gaming console during a game or permanently.
SHAXPIR - A modern cloud workspace for fiction writing & worldbuilding
Playnite - Source code generated using layoutit.com
Manuskript - Open-source tool for writers.