!3 (not-three)

Open-source, client-side encrypted paste-sharing platform with a Monaco editor and CLI.

Webfree

!3 (not-three) is an open-source paste-sharing platform similar to Hastebin or Pastebin, built around client-side encryption and the Monaco code editor. It offers syntax highlighting, dark mode, file transfers, and a CLI tool, and can be used via a hosted public instance or self-hosted and linked to the public UI.

Website

Full match profile

Behind the summary, Matchbox keeps a richer profile of !3 (not-three) - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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