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Remark42 vs Isso: catalog facts
Remark42	Isso
Best for: Blog owners replacing Disqus with comments they host themselves	Best for: Blogs and static sites replacing Disqus with self-hosted comments
Free Free and open source under the MIT licence.	Free Free and open source under the MIT license.
Self-hosted	Self-hosted
No external database; data lives in one embedded file Imports existing comments from Disqus and WordPress All 4 strengths for Remark42 No external database; data lives in one embedded file Imports existing comments from Disqus and WordPress Many login options plus optional anonymous comments Multi-site mode from a single instance	Small client script of about 20kB gzipped Imports existing Disqus and WordPress comments All 4 strengths for Isso Small client script of about 20kB gzipped Imports existing Disqus and WordPress comments Simple SQLite storage Docker image and PyPI package available
Requires running and maintaining your own server Comments only; not a full forum	Fewer features than larger comment platforms Installing from PyPI needs a C compiler and Python headers
Self-hosted	Self-hosted
Open source	Open source
License: MIT	License: MIT
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for Remark42 remark42.com github.com/umputun/remark42 Catalog checked October 2, 2026	Official website Full listing and sources Sources for Isso isso-comments.de github.com/isso-comments/isso Catalog checked October 2, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.