What happened to Plumb?

discontinued The URL on file (https://useplumb.com/) did not respond across three consecutive checks; the streak completed on 2026-09-19.

The address on file matched Plumb's own domain with high confidence, so this observation is reported about Plumb directly. See the methodology for how the match is made.

The vendor's own description, unedited:
Plumb is a collaborative visual programming tool designed for SaaS teams that are building complex AI-powered products. It aims to streamline the process of building, testing, and deploying AI features by eliminating code hurdles and providing no-code collaboration. At its core, Plumb is a node-base...

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.