- ChessX (https://chessx.sourceforge.io/) – Free Chess Database (PC, Mac & Linux)
- ChessPad (http://www.wmlsoftware.com/download.html) – Free Chess(PGN) viewer (for Windows) – it premium version PosPad requires a payment.
- Arena Chess (http://www.playwitharena.de/ ) – A free Graphical User Interface (GUI) for chess (Windows and Linux)
- SCID (http://scid.sourceforge.net/ ) – free chess analysis software (For windows)
- Jose (https://sourceforge.net/projects/jose-chess/) – free chess analysis DB (Windows and Mac)
- Lucas Chess (https://lucas-chess.software.informer.com/ ) – free app to practice and learn chess (for Windows
Founded 1954