i think he means opening explorers that don't ask for subscriptions after it has showed you a few moves...[ i speak fluent aussie...]
Any good sites where I can find unlimited openings
Just download Scid (free database software) and a large free database like ICOfy, and you have your own. Much more powerful.
chesslab?
365chess?
chessgames?
Even most of the ones that require an account just want an email, mostly.

http://chesstempo.com/game-database.html
Up to move 10 you can get a detailed list of all openings related to the position for free ( over move 10 you have to be a premium member ) . You can also filter the database according to players rating ( from 2200+ to 2700+ ).
Any good sites where I can find unlimited openings develop into games for free?