[link to older programs removed]
I've written lots of RW-related code over the years and programs that convert various file formats.
Here are some binaries: http://aap.papnet.eu/gta/utils/librw_bin/
and here is the source https://github.com/aap/librw https://github.com/aap/librwgta
I usually don't remember what I changed since the last versions, so just let it surprise you.
Also do note that I wrote these tools for my personal use, don't expect them to be perfect in every regard. They