Nicheloom visits: 50,422 all-time · 8,624 in the last 7 days

The opportunity tracker for new startups.

Today: 2,656 launches · Niche of the day: casual mobile games · See what launched today →

CookieMop

Delete a site's cookies when you close its last tab

Get picks like this daily. Today's launch numbers, the top launches, AI and tech news, and a daily opportunity pick, straight to your inbox.

Deletes a site's cookies 15 seconds after you close its last tab (adjustable). Whitelisted sites stay logged in. Open source (MIT), built for Manifest V3. The extension itself makes no network requests. Imports your Cookie AutoDelete whitelist.

PH · launched Nov 7, 2026 · 1 upvote (top 64%) · 0 views

Niche: browser extensions · 235 launches, 23 in the last 7 days ▼ -36% · Explore this niche →

Category and tags

  • Security
  • B2C
  • Not AI
  • Commercial product
  • Chrome Extensions
  • Open Source
  • Privacy
  • GitHub

Visit website ↗ Source listing ↗

Could you build this?

Yes It is a Manifest V3 browser extension that uses cookie and tab APIs with a timer and a whitelist. No backend is needed, and the core logic is small.

Competitors

Other products that read as similar to this one : 169 launches clear the similarity bar, closest 8 shown.

Attention rank: #74 of 170 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 349 days after the earliest competitor.

The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.