I recently noticed that arXiv labs has added connections to https://paperswithcode.com (Papers with code). For example you see that in arXiv:1909.11230 if you activate Javascript and click on the "Code" menu under the submission history.

So far, it apparently just links to the Git repository, but probably it has other possibly interesting things that may be worth considering.

I am busy editing the final version of the Maneage paper now and don't have much time to go into it, but it may have interesting features, so if you do get to have a closer look at it, please share your thoughts here...