@alecui I can add:
Acode - text editor, AntennaPod - podcast manager, Barcode-Scanner, Editor - simple generic, Flym - feed reader, FreeOTP+ - 2fa, KDE Connect, KeePassDX, LibreOffice - viewer, MuPDF - viewer, Ning - network scanner, Open Camera, OpenFoodFacts, OpenTracks - GPS tracker, Syncthing, Termux, Text Fairy - ocr, Tusky - mastodon.