Apps & tools ·
Colshare, an app for sending a document through a one-time link
A document-sharing app at colshare.app. The maker says you can redact a file, watermark it, and send a link that opens once, and that a business version lets a client upload without an account.
They say Claude Code on Opus 5.5 wrote the apps, and that their own tests found issues they then fixed. The client-side crypto is at github.com/dentracon-cell/colshare-crypto under AGPL-3.0. Those tests are the maker's. We have not reviewed the code or installed the apps.
Made by u/IcyResolve956. This write-up follows the original post; it is not an independent product test.
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