Snac is a lightweight Fediverse-compatible social network server which is entirely human-written, and doesn't require a database. You can find out more at:
🏡 https://codeberg.org/grunfink/snac2
You can follow Snac's lead developer at:
It can be installed via @yunohost (at https://apps.yunohost.org/app/snac) or manually using the installation instructions (at https://codeberg.org/grunfink/snac2/src/branch/master/README.md).
p.s. By the way, Snac can also be used to create Fediverse services. @stefano used Snac to make weather forecast accounts for cities around the world at https://fedimeteo.com
FediMeteo - Weather Forecasts on the Fediverse
FediMeteo - Weather Forecasts on the Fediverse