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CLUSTER ENCRYPTION-MESSAGES-END · 16 ENTRIES · EARLIEST ENTRY 2025-03-25

In-chat encryption keyboards

This cluster comprises encryption utilities and keyboards that secure messages within existing messaging platforms, often via iMessage extensions or custom input methods. The dated entries are spread across 2019 to 2026, appearing at irregular intervals with no clear trend. Traction is uniformly minimal, with Kryptos, Secret Text: Encrypt Message, and Sudo Encrypt all showing zero activity stars.

Entry timeline

ENTRY TIMELINE

AUG 2019: 1APR 2020: 1DEC 2021: 1MAY 2022: 1MAY 2023: 1APR 2024: 1MAR 2025: 1JUL 2025: 1AUG 2025: 1NOV 2025: 1MAR 2026: 2MAY 2026: 1JUL 2026: 1AUG 2026: 1OCT 2026: 1
AUG 2019OCT 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 5 hand-coded · 11 unlabelled

Operator · 4 commercial · 4 open source · 8 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 16 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01SMSecure0★24 dayslivehand-codedopen sourceMobile messenger app that adds end-to-end encryption, identity verification and spam blocking to standard SMS text conversations.
  2. 02ForeverCrypt0★11 dayslivecommercialDesktop tool that encrypts individual messages as short pasteable codes so people can exchange secure texts inside any existing chat app.
  3. 03Kryptos0★22 daysliveopen sourceEncryption app that secures messages within any messenger using a custom keyboard, encrypting text input and decrypting incoming messages automatically.
  4. 04SecurePlay - Encrypted IM0★1 molivecommercialEncrypted instant messenger providing end-to-end encryption, ephemeral messages, scheduled sending, and secure group chats.
  5. 05Secret Text: Encrypt Message0★7 mostalelivecommercialEncrypted messaging app that encrypts text and allows secure communication via any messenger, with subscription plans.
  6. 06alt.chat0★3 moliveMessenger that works over any email account with end-to-end encryption, offering voice and video calls and group chats.
  7. 07Sudo Encrypt0★6 yrabandonedlivehand-codedEncryption utility that generates RSA keypairs locally and lets users encrypt, decrypt, sign, and verify messages within iMessage.
  8. 08Password Encrypted Message0★7 yrabandonedlivehand-codedcommercialiMessage extension that lets users send password-protected encrypted messages and emoji-based codes.
  9. 09Enigma X: Encrypt on your own0★19 daysliveEncryption keyboard that secures messages, voice, and media across any messaging app with end-to-end encryption and decoy PINs.
  10. 10Cipher Message0★8 mostaleliveiMessage extension that helps friends encrypt and decrypt messages using classic ciphers like Caesar and Vigenère, with optional password protection.
  11. 11FaradayWire Messenger0★8 mostaleliveEnd-to-end encrypted messenger that pairs with hardware security keys to keep message-decryption keys off the cloud.
  12. 12FOX - Secure Message0★1 yrabandonedliveMessage-encryption utility that lets users encrypt text with a secret key and only recipients with the matching key can decrypt it.
  13. 13Briar Mailbox0★2 yrabandonedliveopen sourceMobile helper app that stores encrypted messages for an offline messenger and automatically delivers them once the main app reconnects.
  14. 14KryptEY0★3 yrabandonedliveopen sourceAndroid keyboard that enables serverless end-to-end encrypted messaging in any app via the Signal protocol.
  15. 15P-SMS0★4 yrabandonedlivehand-codedEncrypted SMS texting app that lets users generate a key, share it securely with someone, and exchange encrypted text messages.
  16. 16Encode your Message0★4 yrabandonedlivehand-codedUtility app that encodes messages with customizable encryption keys and offers a keyboard extension for encrypted texting.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.