Messaging
SimpleX Chat
SimpleX is the architectural answer to "I do not want any global identifier in my messaging.
- Website
- simplex.chat
- KYC
- no KYC — No user identifiers at all; connections are made by exchanging one-time invitation links. No phone, no email, no username globally visible.
- Status
- active
- Fiat on-ramp
- no
- Payment
- donation
- Jurisdiction
- independent open source
- Founded
- 2021
- Open source
- yes
- Custodial
- no
- Last verified
- Sources
- 2
Overview
What SimpleX is#
An end-to-end encrypted messenger with no user identifiers; contacts are established by exchanging one-time invitation links.
Threat-model fit#
When phone-number registration is itself part of the threat.
Strengths
- Architecturally identifier-less: no globally-visible profile, no phone, no email.
- Per-contact unidirectional queue model — different contacts see different identifiers.
- Self-hostable servers (SMP and XFTP).
Caveats
- Smaller user base than Signal; discovery is by invite-link sharing only, which is the design point.
- Younger project; cryptographic and protocol audits are more recent.
- Facts need re-verification by operator (last seeded 2026-01).
Verdict
SimpleX is the architectural answer to "I do not want any global identifier in my messaging." There is no account, no profile, no phone, no username. The cost is friction: every contact starts with a one-time link. For threat models that explicitly exclude phone-numbered identities, SimpleX is the reference design.
FAQ
- Does SimpleX Chat require KYC?
- As of Jan 1, 2026, SimpleX Chat does not require KYC for normal use. No user identifiers at all; connections are made by exchanging one-time invitation links. No phone, no email, no username globally visible.
- What payment methods does SimpleX Chat accept?
- SimpleX Chat accepts: donation.
- Where is SimpleX Chat based?
- Operating jurisdiction listed as independent open source. This is best-known information; corporate structure can be opaque.
Sources
- SimpleX docs · accessed
- SimpleX source · accessed
Mentioned in
Ranked picks
- Best privacy messengers in 2026 Best identifier-less messenger
Guides
- Common myths about no-KYC services in 2026
- Operational privacy — combining tools without correlating yourself
- Privacy stack for activists in 2026
- Privacy stack for developers and sysadmins in 2026
- Privacy stack for whistleblowers in 2026
- Signal vs SimpleX vs Session — which encrypted messenger in 2026
- Privacy stack for journalists in 2026
Quick answers
Recommended in country pages
- United States (US) Messaging (no phone)
- Germany (DE) Messaging without phone
- France (FR) Messaging without phone
- United Kingdom (GB) Messaging without phone
- European Union (overview) (EU) Messaging without phone
- Australia (AU) Messaging without phone
- Russia (RU) Messaging without phone
- India (IN) Messaging without phone
- Brazil (BR) Messaging without phone
- Italy (IT) Messaging without phone
- Spain (ES) Messaging without phone
- Japan (JP) Messaging without phone
- Mexico (MX) Messaging without phone
- Argentina (AR) Messaging without phone
- Turkey (TR) Messaging without phone
- South Korea (KR) Messaging without phone
- United Arab Emirates (AE) Messaging without phone
Alternatives to SimpleX Chat
- Briar none kyc · Germany
- conversations.im optional kyc · Germany
- Cwtch none kyc · independent
- Delta Chat none kyc · independent
- Element (Matrix) optional kyc · United
- JMP.chat none kyc · Canada
Entry last verified . Notice an error? Send it via the contact form.