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RSSMonster vs Stringer: catalog facts
RSSMonster	Stringer
Free Free to self-host with published source code.	Free Free and open source under the MIT licence. Hosting is separate.
Web, Self-hosted	Web, Self-hosted
Familiar three-pane reading layout Smart folders and search	No social features, recommendations or analytics by design Simple Rails application that deploys to a small server easily
Requires running your own server and database Smaller community than older self-hosted readers	Minimal feature set; no filtering, tagging or mobile apps Development is largely dormant
Self-hosted	Self-hosted, Web application
Open source	Open source
License not stated	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.