A safe haven for your unsaid and unsent letters.
Pi. Ku. is a zero-knowledge, end-to-end encrypted letter-writing app for the words you've carried too long. Write a letter, seal it in an envelope, send it through a secure link, or lock it away in a time-capsule vault all without the server ever seeing a single word.
Updated 2026-07-13 09:15:59 +00:00
A minimal and light-weight AuthToken broker
Updated 2026-07-13 09:15:26 +00:00