Alpine Linux is a distribution known for being extremely simple and lightweight thanks to software like the Musl libc, and is popular among e.g. Docker containers, and growing among VPS providers. Knowing how resource-bound Glitch projects are, and that Ubuntu 16.04’s EOL is in April 2021, it would be interesting if Glitch started using Alpine, which provides on-par performance while using as little as 800 MB of storage and 50 MB of RAM for a basic install.
P.S.: sorry for the lack of references, I can only post up to two links!