What happened to the URL on file for CoGrader?

URL unreachable The URL on file (https://essaychecker.io) did not respond across three consecutive checks; the streak completed on 2026-09-23.

This reports what that URL did, not a claim that CoGrader itself is gone: the address on file does not confidently match CoGrader's own domain, so if it turns out to be a marketplace or listing page rather than CoGrader's own site, this observation is still accurate about the URL, just not about the product. See the methodology for how the match is made.

The vendor's own description, unedited:
CoGrader is an AI-powered, rubric-based grader and feedback platform that focuses on written assignments. It helps teachers provide quality feedback on essays in 80% less time. It integrates with Google Classroom, Canvas, and Schoology, allowing teachers to import assignments, define grading criteria, and generate detailed feedback and justification reports.

Live alternatives

No active same-category alternatives in the registry yet. The tools index carries everything else that is live.

How this was decided

Not an editorial call. The URL on file failed three consecutive checks, with a confirmation re-probe before the streak counted (a bot-wall response never counts as one), and the 3-miss rule marks the listing discontinued automatically. If the URL responds again, the registry restores it on its own: warn first, then active. Both directions are recorded as events.

Spot an error? Tell us. Corrections to the record append, they never rewrite.