GitPitch is hosted as a free slideshow presentation service on gitpitch.com. This service is available to absolutely everyone with an account on GitHub, GitLab, and Bitbucket.
The free GitPitch presentation service offers a very extensive feature set to presentation authors.
GitPitch first launched as an open-source project in early 2016. The project continues to be actively developed and maintained on GitHub. The project repo is here. The above snapshot shows some basic project stats.
Fun Fact - GitPitch slideshow presentations have been viewed in almost 200 countries around the world.