A private messaging app and network that protects metadata as well as content. Messages are end-to-end encrypted with libsodium and routed through a decentralised onion-routing network the project calls onion requests, so that no single server knows both the origin and the destination of a message; identities are anonymous and messages are stored in swarms of network nodes until collected. The app runs on mobile and desktop, supports one-to-one and group messages, and the project says contributors are working on Session Protocol V2, which plans post-quantum cryptography. It is stewarded by the Session Technology Foundation, a Swiss foundation without shareholders, and the site lists a Session token .
LicençaCopyleft (GPL-3.0 for the Android app). https://github.com/session-foundation/session-android and sibling repositories for other platforms
Status de Dev 🟢 Ativo
ProprietárioSession Technology Foundation (a Swiss foundation, per its own site), which stewards the Session ecosystem; the app code is under the session-foundation GitHub organisation
Órgão de GovernançaSession Technology Foundation, a Swiss foundation bound to its purpose and with no shareholders
PaísSwitzerland (the Session Technology Foundation is a Swiss foundation)
Ano de Início 2018
StackLibsodium cryptography; Session Protocol with onion requests over a network of nodes holding message swarms; Kotlin and Java Android client
FinanciamentoDonations and the Session token ecosystem, per the foundation's site navigation
Última Investigação 29 de out. de 2026
Visão de topologia
Esta ferramenta no centro e o que se relaciona diretamente com ela. Cada linha nomeia o tipo de relação.
OrigensMessaging that keeps the identities of the communicating people private, by removing phone numbers and central servers and routing messages through an onion network
Banco de DadosLocal encrypted database on the device; swarms of network nodes hold messages until delivered
Linguagem de Consulta N/A
Formatos de DadosSession Protocol messages, with libsodium-based encryption; onion request format between client and nodes
Edição Colaborativa em Tempo Real N/A
Edição de Texto Rico Not stated by the project.
Suporte MóvelYes: Android and iOS clients, per the project's FAQ, and an Android repository under the foundation's organisation
Suporte WebNo web client was described in the cited sources
Aplicativos NativosAndroid, iOS and desktop clients, per the project's FAQ
TermosFree to use; open-source code; donations are invited
Fundos Not stated by the project.
Baseado EmLibsodium for cryptography; the project describes its onion routing as similar to Tor with a few key differences
Categoria de Caso de UsoPrivate, anonymous messaging and group chat
Tipo de Interface de UsuárioMobile and desktop apps
Capacidades OfflineMessages are held in node swarms until collected; no offline or local-network mode was described
Recursos de ColaboraçãoOne-to-one and group messages, with attachments
Portabilidade de Dados Not stated by the project.
Ecossistema de IntegraçãoAn open protocol and several client implementations; the foundation awards grants to community implementations
Exportação de Dados da Web2 Not stated by the project.
Coerência Pró-social Not stated by the project.
Fluxos EconômicosToken-based: the Session token ($SESH) is the native cryptocurrency of the Session ecosystem and underpins the node network, per the project's FAQ
Governança e Tomada de DecisãoStewarded by the Session Technology Foundation, which publishes transparency reports and funds community work
Mídia / Publicação N/A
Gestão do Conhecimento N/A
Sensemaking N/A
Gestão de Projetos N/A
Modelo de ComunicaçãoMessages are sent through onion requests to a swarm of nodes and collected by polling; push notifications are an optional 'fast mode'
Resiliência de RedeDecentralised network of nodes; the app can use push notifications through a provider in 'fast mode', which the project says exposes less than it appears
Mecanismo de DescobertaContacts are added by their account ID or QR code; no central directory
Participantes Máximos Not stated by the project.
Soberania de DadosMedium to high: content is end-to-end encrypted and identities are anonymous, but messages pass through a network of nodes the user does not run
Relacionamentos
Como esta ferramenta se conecta a outras ferramentas e organizações, a partir de relacionamentos revisados pelo responsável pelos dados do OpenHaven. Descrevem como os projetos se conectam, não a qualidade deles.