[mzur]

Others have mentioned the Internet Archive. There is also Zenodo [1] where you can archive code and have a good chance that it survives long-term. Zenodo is run by CERN and even has an integration with GitHub, so you can easily archive GitHub repositories. Each archived item can get a Digital Object Itentifier with you could etch into glass to put on your shelf (so you can find your stuff again in a few decades).

[1] https://zenodo.org