ONNS
Secure & Smart Message Encryption for Private Chats
ONNS launched on March 10, 2025 with 9 votes, #3,084 of 7,215 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Protect messages with offline encryption. This app scrambles text using unique keys, ensuring only the right recipient can decode it. No data collection, no internet needed. Easy to use, secure, and preserves formatting. Encrypt, share, and decode instantly!
Advanced encryption solutions for the modern digital age
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ChatSecure iOS v4.0 – OMEMO and Signal Protocol2017 · chatsecure.org · ▲107Free and open source encrypted chat for iOS.




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