Can subscribe to Pinboard via RSS.
Reeder - macOS/iOS RSS Reeder with support for many providers.
Miniflux - Minimalist feed reader written in Go.
Kill the newsletter - Convert email newsletters into Atom feeds.
Greedy - Saves websites you visit through a bookmarklet and exposes them through a RSS feed.
Notifier - RSSify the web.
RSS-Anything - Get updates about anything you can reach with an url. Like RSS, but for anything.
Feedparser - Parse feeds in Python.
Frontend RSS Feeds - Up to date list of RSS feeds for front-end developers.
Feedgenerator - Python module to generate ATOM feeds, RSS feeds and Podcasts.
Infomate - Small web service that shows multiple RSS sources on one page and performs tricky parsing and summarizing articles using TextRank algorithm.
RSS-proxy - Allows you to do create an RSS or ATOM feed of almost any website, just by analyzing just the static HTML structure.
RSParser - Parser for RSS, Atom, JSON Feed, RSS-inJSON, OPML, and HTML.
go-rss - Simple RSS parser for Go.
siftrss - Filter your RSS feeds and throw away the junk.
FeedFox - Modern RSS reader that allows you to play youtube videos, listen to podcasts, download torrents, browser reddit, twitter and view cat GIFs.
Feed43 - Convert web pages into professionally looking RSS feeds.
atom - Rust library for serializing the Atom web content syndication format.
Feedsub - Get RSS/Atom Feeds Delivered To Your Inbox.
About Feeds - Getting Started guide to web feeds/RSS.
Feed Creator - Create feed from web page elements.
Podpodge - Convert YouTube playlists to audio-only RSS feeds for podcast apps to consume.
RSS.app - RSS Feed Generator, Create RSS feeds from URL
Blogtrottr - Delivers updates from all of your favourite news, feeds, and blogs directly to your email inbox.
reddit-rss - Improved RSS feed for Reddit.
Litchan - Link/RSS aggregator with live commenting.
Feeds Pub - RSS aggregator & network.
Audiocasts - Platform to host RSS podcast feeds for your audiobooks.
RSSMonster - Easy to use web-based RSS aggregator, created as an alternative for Google Reader.
RSS-Bridge - RSS feed for websites missing it.
RSS Mailer - Lambda function for turning your RSS feed items into emails.
FastRSS - Parse RSS feeds very quickly.
FreshRSS - Self-hosted RSS feed aggregator.
Node RSS - RSS, Atom and JSON Feed generator for Node.js, making content syndication simple and intuitive.
Homura - Elegant RSS reader.
Kalaksi - Social-network built on top of RSS.
Petrolette - News reader focused on preventing anyone to know what you are reading.
gof - CLI to post RSS/Atom feeds to the fediverse.