Dev tools · alternatives · 2026
24 alternatives to SilentSuite
End-to-end encrypted sync for calendar, contacts and tasks.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Secure, end-to-end encrypted, and privacy respecting sync for your contacts, calendars, tasks and notes.
2017 · etesync.com · its alternatives →
- 2
- 3
- 4
- 5
Tresorit 3.0▲98End-to-end encrypted file sync & sharing for your team
2016 · tresorit.com · its alternatives →
- 6
- 7
Living a connected life does not require giving up your privacy. Our mission is to build products and services that are a delight to use, while also respecting your privacy.
2020 · zood.xyz · its alternatives →
- 8
Notes, tasks, calendar, and AI in one E2E encrypted app.
Jul 2026 · notte.com · its alternatives →
- 9
OI Calendar▲78Encrypted, decentralized alternative to Google calendar
2019 · cal.openintents.org · its alternatives →
- 10
Free and open source encrypted chat for iOS.
2017 · chatsecure.org · its alternatives →
- 11
- 12
Metamorphic▲94The zero-knowledge encrypted habit tracker. Transform your habits, own your growth — with end-to-end encryption by default.
2023 · metamorphic.app · its alternatives →
- 13IO
Look, every journaling app out there wants you to organize things into folders and tags and templates. I just wanted to write something down every day. So I built this. One note per day. That's the whole deal. - Can't edit yesterday. What's done is done. Keeps you from fussing over old entries instead of writing today's. - Year view with dots showing which days you actually wrote. It's a streak chart. Works better than it should. - No signup required. Opens right up, stores everything locally in your browser. Optional cloud sync if you want it - E2E encrypted with AES-GCM, zero-knowledge,…
Mar 2026 · its alternatives →
- 14
- 15
Layers▲61The private network strangers literally can't reach you on.
Apr 2026 · layers-app.com · its alternatives →
- 16
- 17
Portal▲92Zero-config P2P encrypted folder syncing, not the 2007 game
2021 · github.com · its alternatives →
- 18
Seald SDK▲108Protect your users' data with end-to-end encryption.
2021 · seald.io · its alternatives →
- 19
Polite▲86Automatically silence your phone during calendar events
2016 · play.google.com · its alternatives →
- 20CI
2013 · cryptonote.org · its alternatives →
- 21
- 22ET
One year ago I started to explore combining CRDTs with end-to-end encryption to allow people to collaborate on the same documents/data. Couple months back I got a first prototype working. Think of a simple Google Docs, but end-to-end encrypted and offline-first (iOS & Android for now). Why CRDTs? Every document is a CRDT data structure. This is very important for conflict resolution. With CRDTs this can happen on the client and everyone can resolve to exactly the same state of the document once all the updates are synchronised. This basically allows to exchange the updates/data via…
2021 · its alternatives →
- 23NA
Express yourself with freedom — no spying, no tracking, only private notes. Unlike Evernote and other note apps, your data is yours alone.
2021 · notesnook.com · its alternatives →
- 24CS
2015 · cryptomove.com · its alternatives →
Also compare
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 →