EchoThread is a privacy-first commenting platform for blogs, documentation, and other websites. Its lightweight widget can be added with a single script tag, works across domains, and weighs under 65 KB gzipped. The service offers a free Hobby plan for one site, with paid plans starting at $5 per month. EchoThread aims to make discussion easy for readers while giving site owners control without ads or tracking.

Comments can be posted with an account or, when guest commenting is enabled, using only a display name. Every new comment is screened by Siftfy, EchoThread’s machine-learning spam classifier, and site owners can review, approve, reject, or delete posts in a moderation dashboard. Additional safety tools include restricted-word rules, commenter bans and trust settings, and options to close older threads.

The platform also supports threaded replies, reactions, image attachments, link previews, GIF search, rich-text formatting, and comment sorting. Readers can sign in with Google, GitHub, X, or Facebook.