Miniflux (https://github.com/miniflux) has a paid version but you can host it yourself
Tiny Tiny RSS https://tt-rss.org/ I host it myself and love it.
What I do is a bit elaborate, and probably isn't for everyone. I run Tiny Tiny RSS on my home web server. It aggregates all of the RSS feeds that I'm interested in, then provides them as one or more RSS feeds that it generates (which I read with gReader on Android) or in a decent web interface (which I use when I'm not using a mobile device).
After running into Inoreader's limits I found Feedbro, it is a free extension for Chrome and Firefox and it does the job very well.
It is not open source but I haven't managed to find any negative comments on the developer.
Feedly, it is free with small ads ( I do wish they highlight the ads in different colour though ).
I still wish there is an RSS Reader within Safari. Since all my bookmarks are synced to iCloud, there is no reason why my list of RSS feeds can't live within my iCloud as well.
The Oldreader.
I don't have enough feeds to need their pro tier.
I am probably going to write my own soon for practice.
I built a bare-bones one for myself a while back: https://github.com/johnjones4/FeedPage/ All you need to use it is a link to an OPML file with your feeds and Docker. Here's what my OPML file looks like: https://gist.github.com/johnjones4/0fd1b1b47d62d826164bea990...
bazqux.com - it tries to mimic old google reader closely, have very compact ui, support hotkeys and loads comments inline. written by 1 guy in haskell/urweb. unfortunately its not free.
Sage with Waterfox. Old, but I've never found anything better. When it stopped working in FF I had a day of mourning, and then when I found Waterfox I had a day of rejoicing.
Slack
Created a slack for myself and do all kinds of integrations. Including several rss channels.
Usage: /feed http://...
GNU Emacs + Gnus, using http://gwene.org to convert RSS feeds into newsgroups.
Honestly I use a trivial client to download RSS-feeds and convert them to emails.
(I rewrote rss2email in golang.)
It means I don't need yet-another application/client and I can do sorting, tagging, etc as I would for emails. Doesn't matter which host I'm on, or where I am, the state of "new" vs "read" is maintained, for example.
I use the Brief firefox plug-in, but I mostly use it for tracking YouTube subscriptions w/o an account
I use Inoreader with Reeder.
https://github.com/nikitavoloboev/knowledge/blob/master/rese...
I wrote one I like, but I was looking for a specific use-case. https://github.com/Dotnaught/vulture-feeds
I use Nextcloud’s News app. On iOS I read it directly from my instance as it is responsive. On Android I used the Nextcloud News Android app from F-Droid
Feedly via Nextgen Reader for majority of news and Foxish live RSS in Vivaldi to mimic Firefox live bookmarks, for local general news
liferea - https://lzone.de/liferea/
Newsboat (open source) https://newsboat.org
Reeder (with Feedly as the backend)
TheOldReader
Thunderbird
Feedbin for syncing and web. Readkit on MacOS. Reeder for iOS.
Feedly and Blogtrottr.
QuiteRSS on CentOS @ work. I like it
Feedly
Akregator
https://tt-rss.org/ hosted on a small VPS.
FreshRss installed as a docker container in my local little server.
Don’t use one
https://newsblur.com/