Signal
Hard to leave Stage 2
End-to-end encryption by default and a nonprofit structure limit the usual ad-driven extraction. Still, lock-in shows up through contact graph effects, OS notification dominance, and the difficulty of moving non-technical friends. Rated stage 2: good for users, with mounting switching costs rather than open predation.
- Since
- 2014
- Function
- Messaging
- VC-backed
- No
- Public
- No
News signals
More in Messaging
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Element
1 Plenty for usersOpen-source Matrix client; messages federate across servers you control, end-to-end encryption is on by default, and no single company can revoke access to your conversations.
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Telegram
2 Hard to leaveFast clients and huge channels; optional E2EE and a semi-centralized model create a distinct trade-off between freedom and trust in the operator.
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WhatsApp
3 Cashing inDefault chat for much of the world; phone-number identity and network effects make leaving socially costly, while Meta monetizes the ecosystem around it.
