Nearly every feedback tool now offers no-login guest access for reviewers; that fight is won. The account has just moved to the other side of the table: the author still signs up, configures a workspace, and pays per seat. MarkLayer is the exception that drops the account on both sides: creating a review and leaving feedback are equally anonymous, and the link is the entire onboarding.
Audited against each tool's own onboarding, August 2026:
| Tool | Reviewer needs an account? | Author needs an account? |
|---|---|---|
| MarkLayer | No | No |
| AnnotateWeb | No | No (2-minute retention) |
| Pastel | No | Yes, paid past 1 canvas |
| Markup.io | No (guest links) | Yes, $79/mo |
| BugHerd | No (guest reports) | Yes, from $50/mo |
| Marker.io | No (unlimited reporters) | Yes, from $59/mo |
| Volley | No (guest links) | Yes, $29/mo after trial |
| Feedbucket | No (unlimited reporters) | Yes, from $49/mo |
| Usersnap | No (widget users) | Yes, from ~€39/mo |
Guest review is a solved problem; the vendors solved it because clients forced them to. What remains is the author-side stack: create an account, verify an email, make a workspace, add the project, configure the share settings, and then send the link. For a standing agency workflow that setup cost amortizes. For the other cases, a one-off design review, a quick QA pass on staging, feedback on a page you don't own, the setup regularly costs more than the review.
That asymmetry is a deliberate part of MarkLayer's design: there is no author account to create because there are no accounts. Open the page, annotate, share the link. The staging-site walkthrough shows the full client flow, including password-protected staging.
No-login access differs in depth. In most tools, a guest can leave a comment and little else. In MarkLayer, the person opening a share link gets the same surface as the person who created it: drawing tools, threaded replies, live cursors on a shared call, and comment statuses, so "guest" is not a second-class mode. If your review rounds involve back-and-forth rather than a one-shot comment dump, check this dimension before choosing a tool; it is rarely on the pricing page.
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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