PTAL vs Markloop and display.dev
Markloop and display.dev are built for the same loop as PTAL: your agent publishes a document, people comment on it, your agent reads the comments and publishes the next version. This page is about the differences, including the ones that favour them.
The short version
What all three do
- An agent publishes a single HTML page to a link and updates it in place; each update is a version.
- Readers open the link and comment on the exact sentence, with no account required.
- The agent gets the comments back with the quoted text and context, so nothing is copied and pasted.
- All three connect to Claude Code, Codex and Cursor; PTAL and Markloop also connect to ChatGPT and Claude on the web over MCP.
What is different
Markloop
Markloop's comments carry the target element, the quoted text, surrounding context, section, status and version, and reach the agent over MCP or as acomments.md file next to the page. Its site describes HTML documents only, no forms, no password protection, and no public API or webhooks. There is a 14-day trial and then $19 a month for one seat or $49 for five, with EU hosting and a data-processing agreement built into the terms.
display.dev
display.dev is aimed at companies: pages are private by default and sit behind Google or Microsoft sign-in, outside reviewers get a one-time code by email, and paid plans add an audit log of who published, commented and opened each version, plus view counts and retained versions. It accepts HTML or Markdown. Free to start, then €15 a month for one person or €49 for a team with single sign-on.
PTAL
PTAL adds forms: any HTML form on the page is captured and lands in the inbox as structured answers, so an agent can ask questions, not just invite notes. Markdown is rendered for you. Pages can be open to anyone, limited to signed-in readers, or limited to your organization, with an optional password. Signed-in commenters appear by name and photo; anonymous readers pick a display name. The inbox is a plain REST API as well as MCP and a local skill, with long-polling so an agent can wait for replies. The free plan has no time limit; free pages stay for 30 days after their last update, and Pro pages never expire.
Where PTAL is behind
PTAL has no company single sign-on, no audit log, and only a view count rather than per-reader analytics. Hosting is in the United States. If your buyer is an IT department with a checklist, display.dev covers more of it today.
Side by side
| PTAL | Markloop | display.dev | |
|---|---|---|---|
| Outside readers comment without an account | Yes | Yes | One-time email code |
| Comments anchored to the exact text | Yes | Yes | Yes |
| Forms with structured answers | Yes | No | No |
| HTML | Yes | Yes | Yes |
| Markdown rendered | Yes | No | Yes |
| Agent connection | Local skill, REST API, MCP | MCP or file export | CLI |
| Wait for replies (long-poll) | Yes | Not described | Not described |
| Password on a page | Yes | No | Sign-in instead |
| Limit to signed-in readers or your organization | Yes | Link-level only | Company SSO |
| Version history | Restore any version | Yes | Paid plans |
| Audit log and per-reader analytics | View count only | No | Paid plans |
| Hosting region | United States | EU | Not stated |
| Free plan | Yes; pages last 30 days after last update | 14-day trial | Yes |
| Paid price | $10 / month, or $50 / year, per organization (20 people) | $19 (1 seat) or $49 (5 seats) / month | €15 (1 person) or €49 (team) / month |
Which one to use
Use Markloop or display.dev when…
- You need EU hosting and a data-processing agreement in the contract (Markloop).
- Your readers must sign in with the company Google or Microsoft account, and you need an audit log (display.dev).
- You want per-reader analytics: who opened which version and when (display.dev, paid).
Use PTAL when…
- You want to ask questions and get answers back as data, not only comments.
- You publish Markdown as often as HTML.
- Several agents publish and you want one API and one inbox.
- You want to start free and pay a flat $10 for the whole organization when you need more.
- You want a password or a sign-in gate without setting up single sign-on.
Sources and date
Facts about the other product come from its public documentation and announcements, last checked on 30 September 2026. Products change; if something here is out of date, tell us at hello@ptal.org and we will fix it.
Try it: connect your agent in one paste, or use PTAL from ChatGPT or Claude on the web. Free to start; Pro is $10 a month for a whole organization.