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 .
LicenciaCopyleft (GPL-3.0 for the Android app). https://github.com/session-foundation/session-android and sibling repositories for other platforms
Estado de Desarrollo 🟢 Activo
PropietarioSession Technology Foundation (a Swiss foundation, per its own site), which stewards the Session ecosystem; the app code is under the session-foundation GitHub organisation
Órgano de GobiernoSession Technology Foundation, a Swiss foundation bound to its purpose and with no shareholders
PaísSwitzerland (the Session Technology Foundation is a Swiss foundation)
Año de Inicio 2018
StackLibsodium cryptography; Session Protocol with onion requests over a network of nodes holding message swarms; Kotlin and Java Android client
FinanciamientoDonations and the Session token ecosystem, per the foundation's site navigation
Última Investigación 29 oct 2026
Vista de topología
Esta herramienta en el centro y lo que se relaciona directamente con ella. Cada línea nombra el tipo de relación.
OrígenesMessaging that keeps the identities of the communicating people private, by removing phone numbers and central servers and routing messages through an onion network
Base de DatosLocal encrypted database on the device; swarms of network nodes hold messages until delivered
Lenguaje de Consulta N/A
Formatos de DatosSession Protocol messages, with libsodium-based encryption; onion request format between client and nodes
Edición Colaborativa en Vivo N/A
Edición de Texto Enriquecido Not stated by the project.
Soporte MóvilYes: Android and iOS clients, per the project's FAQ, and an Android repository under the foundation's organisation
Soporte WebNo web client was described in the cited sources
Aplicaciones NativasAndroid, iOS and desktop clients, per the project's FAQ
TérminosFree to use; open-source code; donations are invited
Fondos Not stated by the project.
Basado EnLibsodium for cryptography; the project describes its onion routing as similar to Tor with a few key differences
Categoría de Caso de UsoPrivate, anonymous messaging and group chat
Tipo de Interfaz de UsuarioMobile and desktop apps
Capacidades sin ConexiónMessages are held in node swarms until collected; no offline or local-network mode was described
Funciones de ColaboraciónOne-to-one and group messages, with attachments
Portabilidad de Datos Not stated by the project.
Ecosistema de IntegracionesAn open protocol and several client implementations; the foundation awards grants to community implementations
Exportación de Datos de Web2 Not stated by the project.
Coherencia Prosocial Not stated by the project.
Flujos EconómicosToken-based: the Session token ($SESH) is the native cryptocurrency of the Session ecosystem and underpins the node network, per the project's FAQ
Gobernanza y Toma de DecisionesStewarded by the Session Technology Foundation, which publishes transparency reports and funds community work
Medios / Publicación N/A
Gestión del Conocimiento N/A
Sensemaking N/A
Gestión de Proyectos N/A
Modelo de ComunicaciónMessages are sent through onion requests to a swarm of nodes and collected by polling; push notifications are an optional 'fast mode'
Resiliencia de RedDecentralised 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 DescubrimientoContacts are added by their account ID or QR code; no central directory
Participantes Máximos Not stated by the project.
Soberanía de DatosMedium 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
Relaciones
Cómo se conecta esta herramienta con otras herramientas y organizaciones, según relaciones revisadas por el responsable de datos de OpenHaven. Describen cómo se conectan los proyectos, no su calidad.