Lion Reader brings the sites you follow, your email newsletters, and the articles you save for later into one fast, private reader. Newsletters arrive at a private address you subscribe with, so it never needs access to your inbox. It’s free to use, open source, and works on your phone and computer.

This interactive demo is the real Lion Reader UI, and each article in it covers one feature. Many you can try right here: summarize or listen to any article, switch the theme, or press ? to see the keyboard shortcuts.

What makes it different

• Everything in one place — Follow your favorite sites, read email newsletters without cluttering your inbox, and save anything for later from your browser, your phone, Discord, or a file. Links from places like YouTube, arXiv, and GitHub come through complete and readable.
• Yours to own — Free to use and open source, so you can run your own copy. No ads, no data selling, and no ad trackers. Bring your subscriptions from another reader, and keep reading in your favorite RSS app if you like.
• AI when you want it — Summarize any article in seconds, listen to anything in a natural voice, or ask Claude or another AI assistant to search, triage, and save articles for you. None of it runs unless you use it.
• Obsessively fast — New articles show up in the list you’re reading without a refresh, and moving around the app is instant.
• All the essentials, done well — Full articles even when a site only sends a teaser, search, tags, keyboard shortcuts, install it like an app, and themes for day, night, and e-ink.

Lion Reader is designed and built by Brendan Long. Sign up to start using it, or get the source code on GitHub.