Pocket Chess Book by Maksym Butsykin

How to Navigate & Use Lichess Studies, Opening Explorer (and More)

Live Chess - Chess.com Chess, Chess game, Chess online

Lokasoft. PGN Viewer

Wikipedia:WikiProject Chess/Interactive chess boards - Wikipedia

Chess Repertoire Manager

GitHub - c4akarl/ChessForAll: Play chess against an engine or use the program as a PGN editor/-viewer (OS Android).

Chess Analysis Board and PGN Editor

Chess Tools

Chess match database manager II

GitHub - alex65536/Chess256: Chess 256 is a chess program for playing, editing and analysing chess games.