Self-hosting
Hosting your own services. Preferably at home and on low-power or shared hardware.
Also check out:
If it is not only RSS feeds (which are sadly getting rarer and rarer to find) you you could look into: https://github.com/huginn/huginn
Or this RSS-Bridge that makes RSS feeds for sites that don't have one: https://github.com/RSS-Bridge/rss-bridge
If you find that you're generally reading articles on a single device (e.g. your phone), consider a local RSS reader app that doesn't require a server elsewhere. I've been using read you for this (also interested in trying out feeder ), and its a great, simple, elegant solution. The occasion where I'd like to see the feed on my computer is definitely outweighed by not having to manage self-hosting or pay for an online solution.
I use https://miniflux.app/ now after switching from tinytinyRSS, which was in fact, not so tiny 😉
Miniflux has a simple, minimal web UI which works nicely from any device. It is kept simple and minimal, which I consider nice but might not be everyone's cup of tea.
In short: this is small, nice, easy to use and it runs on minimal resources. I'm happily using it for years already. 👍
RSS is an old enough standard (1999) that there are a LOT of options available – biggest limitation is what platform and do you want standalone program/app or web-based?