I'm running multiple services such as Forgejo, Audiobookshelf, Castopod and they all need no more than roughly 100 MB RAM.

There is one exception though. Open WebUI with a whopping 960 MB. It's literally a ChatGPT interface. I'm only using external API providers. No local models running.

Meanwhile my website that runs via my own Wordpress-like software written in Rust [1] requires only a few MB of RAM, so it's possible.

[1]: https://github.com/rikhuijzer/fx