Please refer to this blogpost to get an overview.
Replace *-INSTANCE with one of the public instances listed in the scrapers section. Replace CAPITALIZED words with their corresponding identifiers on the website.
https://NITTER-INSTANCE/USERNAME/rsshttps://RSS-BRIDGE-INSTANCE/?action=display&bridge=Twitter&format=Atom&u=USERNAME- Twitter feeds on rss.app
https://hnrss.org/frontpagehttps://news.ycombinator.com/rsshttps://gophersignal.com/rss#/https://damng.github.io/hackernews-rss-with-inlined-content/output.rss- More...
http://old.reddit.com/r/SUBREDDIT/.rsshttps://burkybang.com/reddit_rss/?rss=r/SUBREDDIT/.rsshttps://LIBREDDIT-INSTANCE/r/SUBREDDIT.rss- More...
- Reddit feeds on rss.app
https://RSS-BRIDGE-INSTANCE/?action=display&bridge=Instagram&media_type=all&format=Atom&u=USERNAME- Instagram feeds on rss.app
https://RSS-BRIDGE-INSTANCE/?action=display&bridge=TikTokBridge&context=By+user&format=Atom&username=USERNAME
https://RSS-BRIDGE-INSTANCE/?action=display&bridge=Facebook&media_type=all&limit=-1&format=Atom&u=USERNAME- Facebook feeds on rss.app
https://www.flickr.com/services/feeds/photos_public.gne?id=USER_ID- More feeds
https://USERNAME.tumblr.com/rss- Tumblr feeds on rss.app
https://FEDIVERSE-INSTANCE/@USERNAME
https://bsky.app/profile/USERNAMEhttps://bsky.app/profile/did:USERID/rss
https://RSS-BRIDGE-INSTANCE/?action=display&bridge=Telegram&format=Atom&username=%40PUBLIC_CHANNEL_NAMEhttps://tg.i-c-a.su/rss/PUBLIC_CHANNEL_NAME
https://www.artstation.com/USERNAME.rsshttps://USERNAME.artstation.com/rss
https://nostr-to-rss.deno.dev/feed?users=USERID
https://www.youtube.com/feeds/videos.xml?channel_id=CHANNELIDhttps://www.youtube.com/feeds/videos.xml?user=USERNAMEhttps://www.youtube.com/feeds/videos.xml?playlist_id=PLAYLISTNUMBERhttps://INVIDIOUS-INSTANCE/feed/channel/CHANNELID- Use Google Takeout and convert to OPML
- Export playlist to OPML via command line tool
- Youtube feeds on rss.app
https://LIBRARIAN-INSTANCE/@USERNAME/rsshttps://odysee.com/$/rss/@USERNAME- Lbry Channel Feed Gitlab project
https://PEERTUBE-INSTANCE/feeds/videos.rsshttps://PEERTUBE-INSTANCE/feeds/videos.atom- More...
https://RSS-BRIDGE-INSTANCE/?action=display&bridge=Twitch&type=all&format=Atom&channel=CHANNEL_NAMEhttps://twitchrss.appspot.com/vod/USERNAME- Twitch feeds on RSSBox
https://vimeo.com/USERNAME/videos/rsshttps://vimeo.com/USERNAME/likes/rsshttps://vimeo.com/album/COLLECTIONID/videos/rsshttps://RSS-BRIDGE-INSTANCE/?action=display&bridge=Vimeo&type=search&format=Atom&q=SEARCH_TERM
https://store.steampowered.com/feeds/news/app/GAMEIDhttps://steamcommunity.com/groups/GROUPNAME/rss/https://RSS-BRIDGE-INSTANCE/?action=display&bridge=SteamCommunityBridge&i=GAMEID&category=videos&format=Atomhttps://RSS-BRIDGE-INSTANCE/?action=display&bridge=SteamCommunityBridge&i=GAMEID&category=images&format=Atomhttps://RSS-BRIDGE-INSTANCE/?action=display&bridge=SteamCommunityBridge&i=GAMEID&category=screenshots&format=Atomhttps://RSS-BRIDGE-INSTANCE/?action=display&bridge=SteamCommunityBridge&i=GAMEID&category=workshop&format=Atom
https://www.cheapshark.com/api/1.0/deals?output=rss&title=GAMETITLE
https://rssbox.us-west-2.elasticbeanstalk.com/imgur/r/SUBREDDIT- Imgur feeds on rss.app
https://backend.deviantart.com/rss.xml?type=deviation&q=by:USERNAMEhttps://backend.deviantart.com/rss.xml?type=deviation&q=sort%3Atime+SEARCHQUERY- More...
https://github.com/USERNAME/PROJECT/releases.atomhttps://github.com/USERNAME/PROJECT/commits/master.atomhttps://github.com/USERNAME/PROJECT/tags.atom
https://RSS-BRIDGE-INSTANCE/?action=display&bridge=Soundcloud&format=Atom&u=USERNAME- Soundcloud feeds on RSSBox
- Soundcloud feeds on GetRSSFeed
- Soundcloud feeds on RSSFeedASAP
- Kill-the-Newsletter
- Mailnesia
- Five Filters Fulltext expander
- GetRSSFeed
- RSSFeedASAP
- Morss.it Fulltext expander
- RSS Filter
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Generic redirectors
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A read-it-later service for RSS purists- https://www.rsslibrarian.ch/librarian.php
- More instances ...
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Youtube scraper- https://invidious.io/
- Instance Redirector
- More instances...
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Twitter scraper- https://nitter.net/
- Instance Redirector
- More instances...
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Reddit scraper- https://teddit.net/
- More instances...
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General purpose scraper framework with many supported websites- https://rss-bridge.org/bridge01/
- More instances...
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General purpose scraper framework with many supported websites- https://rsshub.app/
- More instances...
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General purpose scraper framework with many supported websites- https://rssbox.us-west-2.elasticbeanstalk.com/
- https://rssbox.fly.dev/
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Scraper for web comics- https://www.comicsrss.com/
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Turn regular HTML into RSS- https://rssproxy.migor.org/
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RSS.app
General purpose scraper framework with many supported websites- https://rss.app/
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Injects linked content into RSS- https://reddit.0qz.fun
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Spotify podcasts to standard RSS scraper
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General purpose scraper framework with many supported websites- https://hungryhippo.huey.xyz/
- Third-party
- Self-hosted
- Huge list of all things RSS, also here
- A good overview of several reader applications on Wikipedia
Miniflux is missing from the selfhosted aggregators list. It's pretty minimalistic and works very well, also actively maintained.