MarkLayer and Superflow both pin comments to live websites, and both have an AI story, pointed in opposite directions. Superflow sells its own review agents: spend credits, and a built-in AI audits the page for broken links, accessibility issues, or copy problems, with no human needed to drive it. MarkLayer has no built-in reviewer at all. Instead, its MCP server opens the annotation room to whatever coding agent you already run, so the agent that reads a MarkLayer pin is the same one already sitting in your editor.
That's a real architectural difference, not just a pricing one. Superflow's agent generates findings, more things flagged on the page, metered by a credit system that resets monthly. MarkLayer's agent connection is built to close findings: an agent watching a room can read an annotation's CSS selector and component name, make the actual code fix, and resolve the pin itself, with the status update visible live to everyone else in the room. One workflow adds work to a page; the other removes it.
Which one earns its keep depends on where a team's bottleneck actually is. A team that struggles to catch problems in the first place, thin QA coverage, no one auditing for accessibility, benefits from Superflow's automated reviewer flagging things nobody asked it to look for. A team already drowning in flagged annotations, where the backlog is the problem, gets more from MarkLayer's model: point an agent at the room and let it clear the queue.
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 web app for annotating any live webpage. Paste a URL atmarklayer.app and draw, comment, arrow, or highlight directly on the page in your browser — no install, no account, no sign-up. Share a single link and anyone can open the annotations in any browser. A free Chrome extension is available for the sites the web app cannot embed, such as pages behind a login, but it is optional and never required to view a share link. There is 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.
Paste any URL at marklayer.app and annotate the live page in your browser. No install, no account, no sign-up. Recipients of your share links don't need to install anything either.
Annotate a page