What happened to Opal?
discontinued
The URL on file (https://learnopal.com/) did not
respond across three consecutive checks; the streak completed on
2026-09-28.
Opal is an advanced AI-powered study tool designed to enhance the learning process by integrating several features to facilitate studying. It functions as a personal tutor, providing AI-powered note-taking, allowing learners to understand key concepts and details of any uploaded document. The tool u...
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.