Directory
Cusdis
Lightweight privacy-first comments
Free tier + paidRealtime, comments & collabcusdis.com
What it is
Roughly 5 KB embeddable comment widget positioned as a privacy-friendly Disqus alternative. Readers comment without signing in and it sets no cookies whatsoever. Submissions land in a moderation queue you approve by email or from the dashboard. Self-hostable via Docker or a one-click Railway deploy; current version is 1.4.0.
Why it earns a slot
The cheapest real comment system that works for a non-technical audience — $12 a year hosted, or free on a box you already run. No login wall means casual readers actually leave comments instead of bouncing.
Know before you commit
Development is slow and the maintainer has publicly offered to sell the project, so treat it as low-activity software you may end up maintaining. No-login commenting plus a thin anti-spam story means you personally moderate every single thread.
Getting started
Self-host with Docker or Railway, or paste the widget script from cusdis.com
Also in Realtime, comments & collab
Ably
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Agora
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Chatwoot
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Circle
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