You can find the original miniz [0] on github, btw.

Other small and/or fast lz* decoders are tinfl [1], stateless lz [2][3], lz4 (my favorite) [4], fastlz [5].

[0] https://github.com/richgel999/miniz

[1] https://github.com/richgel999/miniz/blob/master/tinfl.c

[2] https://github.com/haproxy/libslz

[3] http://1wt.eu/projects/libslz/

[4] https://github.com/Cyan4973/lz4

[5] https://code.google.com/p/fastlz/