Adding to the list of available open-source debuggers is GAPID. GAPID allows inspecting, tweaking, and replaying calls to OpenGL ES and Vulkan. GAPID is primarily geared for debugging GLES/VLK Android applications but the user-interface runs on Windows, Linux, and macOS. The tracer is able to run on those host operating systems as well as Android.
Components to GAPID include GAPII as the API interceptor, GAPIS as the API server, GAPIR as the API replay daemon, GAPIC as the API client, and GAPIL as the API language.
Those wanting to learn more about Google's GAPID for debugging OpenGL ES and Vulkan applications/games can visit the GitHub project site.