Chess database software for variants For regular chess, I use SCID and it works well. It has database searches, position searches, player stats, and a nice compact file format (i.e. not PGN, which is inefficient and big).

Is there any similar software like the SCID software mentioned above, but for chess variants? I've tried Winboard/XBoard (it reads from PGN, so is slow and bulky, plus it has a slightly stunted search).

An example use case: I would like to organise/search/use a database of only antichess or only atomic games. I should be able to do all (or at least some) of the following:


Save/load the database to and from PGN
Save/load the database to and from a more compact format than raw text PGN (compare SCID .s*4 or ChessBase .cb* formats for regular chess)
Search for games by date/player/rating (or more generally by tag)
Play through the games in a GUI (or at least give me a PGN of individual game(s) I view)


Engine support is not a must.
I leave a partial answer for interested parties:

Scidb (Scidb is a Chess Information DataBase) is a chess information database. (Great sentence.)

It supports some variants (3-check, King of the Hill, Anti/Suicide/Giveaway/Losers, and Crazyhouse), as well as 960 starting. It is currently still in development, and is available only for Linux systems at the moment, requiring a build from source. (It might work on Windows with an appropriate environment configured.)

Unfortunately, it doesn't support the variant I'm interested the most in (Atomic) and is limited to Linux (I do run Linux, but would prefer not to grapple with it as mine runs from an external HDD).

Further answers would be appreciated.