Dev tools · alternatives · 2026

24 alternatives to sup3rS3cretMes5age

A safe, simple tool for one-time (self-destructing) messages

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. sup3rS3cretMes5age launched in 2017; newer entries below may have overtaken it.

1. 1
   SuprSend▲406

   We as developers, build and maintain many services in code, one of them being notification service. In the last 5-7 years, API-to-user communications have exploded across SMS, email, chat apps, mobile, and web push. As a consequence, notification service handling them has become quite complex. Developers spend time building integrations with multiple providers, create templates for each channel, managing scheduling and routing based on preferences, maintaining queues to deliver notifications on time while managing scale. Besides, product teams have poor visibility on notifications as…

   2022 · suprsend.com · its alternatives →

2. 2
   Turtl – A secure, encrypted Evernote alternative▲236

   The safe way to remember everything. Take all your important data with you.

   2016 · turtl.it · its alternatives →

3. 3
   RememBear▲163

   Passwords management tool brought by TunnelBear team.

   2017 · tunnelbear.com · its alternatives →

4. 4
   Threema▲79

   The messenger that puts security and privacy first

   2019 · threema.com · its alternatives →

5. 5
   1SecMail▲112

   Free disposable email that actually arrives in real time

   2025 · tmaily.com · its alternatives →

6. 6
   DataSafe – Encrypted messages via hotkey▲86

   A tiny app to quickly send encrypted messages with a hotkey

   2025 · its alternatives →

7. 7
   FractalCrypt 2.0 – free deniable encryption cryptoarchiver▲128

   Free cross-platform deniable encryption cryptoarchiver - GitHub - zorggomat/FractalCryptGUI: Free cross-platform deniable encryption cryptoarchiver

   2021 · github.com · its alternatives →

8. 8
   Zapmail▲172

   Slack as an email service

   2023 · zapmail.app · its alternatives →

9. 9
   Crypton.sh - SMS▲85

   Secure Anonymous SMS in the cloud (and a phone number)

   2018 · crypton.sh · its alternatives →

10. 10
    Supaleak▲14

    Secret scanning for shipped-too-fast websites

    Jan 2026 · supaleak.com · its alternatives →

11. 11
    Stasher – Burn-after-read secrets from the CLI, no server, no trust▲72

    Stasher is a tiny CLI tool that lets you share encrypted secrets that burn after reading — no accounts, no logins, no servers to trust. I built it because I just wanted to share a password. Not spin up infra. Not register for some "secure" web app. Not trust Slack threads. Just send a secret. Secrets are encrypted client-side with AES-256-GCM. You get a `uuid:key` token to share. Once someone reads it, it's gone. If they don't read it in 10 minutes, it expires and deleted. Everything is verifiable. Every release is signed, SLSA-attested, SBOM-included, and logged in the Rekor transparency…

    2025 · github.com · its alternatives →

12. 12
    GpgFrontend▲87

    Take the initiative to protect privacy in your own hands

    2021 · github.com · its alternatives →

13. 13
    aliceandbob.io▲69

    A free, light and easy to use client-side PGP tool 🔐

    2020 · aliceandbob.io · its alternatives →

14. 14
    secure-ls▲81

    Secure localStorage data with encryption and compression

    2016 · github.com · its alternatives →

15. 15
    Minimal TOTP generator in 20 lines of Python▲25

    Minimal TOTP generator in 20 lines of Python. Contribute to susam/mintotp development by creating an account on GitHub.

    2019 · github.com · its alternatives →

16. 16
    Dastardly▲57

    A lightweight web app security scanner for your CI pipelines

    2022 · portswigger.net · its alternatives →

17. 17
    Opensource Desktop Implementation of the Threema Crypto Messenger▲39

    An open source implementation and desktop client of the Threema Messenger App. - blizzard4591/openMittsu

    2016 · github.com · its alternatives →

18. 18
    Minimalist Passwords Generator▲72

    minimalist design passwords generator

    2018 · apps.apple.com · its alternatives →

19. 19OS
    Open-Source Anonymous Encrypted TLS+OTR Messaging Written in Go▲25

    2015 · hacktunnel.com · its alternatives →

20. 20
    Tiny password manager with all data stored encrypted on your machine▲30

    CLI password manager with encrypted passwords stored locally on your machine using AES-256 - whatl3y/hide

    2020 · github.com · its alternatives →

21. 21
    Threema▲7

    End-to-end encrypted messaging

    2015 · threema.com · its alternatives →

22. 22
    IsTempMail – Detect and block disposable email addresses▲35

    Detect and block disposable, temporary, fake email addresses. Fight spam, fraud and free trial abuse. Available as WordPress plugin and via JSON API.

    2017 · istempmail.com · its alternatives →

23. 23
    I created an off-the-grid password manager that you can save to a file▲48

    Free password manager that you can keep for yourself in a single HTML file. Client side AES encryption, trust no one policy, off the grid password manager. Take full control of your data online or offline.

    2021 · passpilot.com · its alternatives →

24. 24RS
    Revealer – seed phrase visual encryption backup tool▲17

    2018 · revealer.cc · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →