SGFC is the reference implementation for the SGF FF standard.
It's a command line tool for checking SGF files for correctness and correcting any errors. It also converts FF-FF files to FF.
SGFC is intended to be a tool for SGF experts, coders and maintainers of large SGF archives.
... [More] You ought to have quite some knowledge of SGF to use SGFC efficiently.
SGFC was written primarily for Go/WeiQi/Baduk (GM) files. It can't handle other games yet, i.e. it doesn't check any game-specific properties and values of other games than Go. It may even save errornous game-specific properties of other games! Use SGFC for other games with care. [Less]
JimmyGo is an SGF viewer (games of Go) for the J2ME platform, designed to run on phones and PDAs as a MIDP/MIDlet. It downloads games over the network, manages a small local database of games, and displays the games. Includes a minimal SGF parser.
This is a Library of Effective GO routines (EGO library / libEGO), a high performance implementation of Go rules and most popular algorithms used in computer Go.
This is also fully functional GTP Go engine.