MarkLayer and Superflow both pin comments to live websites, and both have an AI story, pointed in opposite directions. Superflow sells built-in AI agents that review pages for you, metered by monthly credits, alongside recorded video/audio feedback and deep tracker integrations. MarkLayer is free with no meters, and its AI angle is an MCP server that puts your own coding agent inside the review room.
Choose MarkLayer for unlimited free annotation with your own AI coding agent working the room via MCP. Choose Superflow if you want built-in AI reviewers that audit pages for you, recorded video/audio feedback, and native Asana/ClickUp/Jira routing, priced per seat and per credit.
| Feature | MarkLayer | Superflow |
|---|---|---|
| Price | Free, no tiers, no credits | Free: 1 project, 1 seat, 60 AI credits/month. Growth $24/seat/month (annual) |
| Sign-up required | No | Yes |
| Comments on live pages | Yes | Yes |
| Voice | Live voice chat in the room | Recorded video and audio clips attached to comments |
| Real-time live cursors | Yes | No |
| AI model | Your coding agent joins via MCP: watch, acknowledge, fix, resolve, reply | Built-in review agents audit a page for 10 credits per review |
| Integrations | None. Paste the share link | Asana, Monday, ClickUp, Jira, Trello, Slack, Webflow, WordPress, Shopify, Framer |
| Open source | Yes (Apache-2.0) | No |
| Best for | Human + coding-agent review on any page, free | Teams that want automated page audits and tracker routing |
Superflow is a paid website review platform with comments pinned to live pages, video and audio recordings, and built-in AI agents that review pages on a credit system.
MarkLayer is a free, open-source Chrome extension that lets you annotate any live webpage with drawings, comments, arrows, and highlights, then share a single link so anyone can view the annotations without installing anything. There is no account, no paywall, and no trial period.
Superflow and MarkLayer take AI in opposite directions. Superflow sells its own review agents: 10 credits per page audit, credits reset monthly. MarkLayer connects the agent you already pay for, Claude Code or Cursor, and lets it fix the annotations rather than write more of them.
MarkLayer is free, requires no sign-up, and works on any webpage. Recipients of your share links don't need to install anything.
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