Screenshots are of Cube 2: Sauerbraten

apitrace consists of a set of tools to:

TL;DR: Apitrace is still being maintained, but the maintainer has very little time to work on it, so patches/issues/requests are addressed if/as time permits.

Download

apitrace is open-source and is hosted on GitHub, and the source can be cloned via git.

git clone https://github.com/apitrace/apitrace

Latest Windows binaries are available from Appveyor:

Older Windows binaries are available from GitHub releases.