https://jamsocket.com/

Jamsocket

Backends for
realtime apps

The painless session backend platform.
Serverless like Lambda, built for WebSockets.

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What are
session backends?

Session backends are server processes that you can start instantly
with an API call. Your application connects to them from client-side
code. When it closes the connection, the session backend is shut
down.

This architecture is commonly used for multiplayer collaboration,
sandboxed user code execution, and more.

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Jamsocket in action

  * Multiplayer

    Jamsocket's session backend implementation was influenced by
    Figma's multiplayer architecture and multiplayer game servers.

    RayonRayon

    Rayon uses Jamsocket as the realtime data backend for its CAD
    software.

    When a user opens a document, Rayon spins up a Jamsocket backend,
    which serves as the source-of-truth for all clients connected to
    that document. The session backend is responsible for persisting
    changes to the database.

    "We love using Jamsocket at Rayon. It just works!"

    Bastien Dolla
    Bastien Dollaco-founder, Rayon
  * Sandboxed code execution

    Jamsocket runs each session backend in an isolated sandbox with
    abuse detection, so you can run code from your users or an LLM
    without losing sleep.

    OpOp

    Op lets users analyze data with Pandas within the browser.

    When a user opens a sheet, Op spins up a Jamsocket backend to
    load the user's dataset into memory. It then allows the user to
    answer questions about the dataset using plain language (by
    invoking an LLM) or directly in Python.

    "I wanted the easiest way to set up a code execution backend for
    every user. Jamsocket had the simplest API."

    Samuel Quinnfounder, Op
  * Jupyter notebooks

    You can run almost anything in a session backend, including a
    full Jupyter notebook server.

    We provide a git repo that you can clone, add pip dependencies
    to, and build automatically with a GitHub Action.

    ToolchestToolchest

    Toolchest uses Jamsocket to create ephemeral demo notebooks for
    its computational biology platform.

    When propective customers click the link, Toolchest starts a
    Jupyter server inside a Jamsocket session backend. When the tab
    is closed, we shut the notebook down.

    "Before Jamsocket, we set up demo environments manually for each
    lead. Now, setting up a demo environment is as easy as sharing a
    link."

    Noah Lobovic
    Noah Lobovicfounder, Toolchest

HOW IT WORKS

> docker build . -t hello-app-image
Successfully built 33fe99c5649e
Successfully tagged hello-app:latest
> jamsocket push hello-app hello-app-image
Tagging.
Pushing.
Using default tag: latest
The push refers to repository [jamcr.io/paul/hello-app]
5c4dd8c6a493: Pushed
6150b9c49004: Pushed
e83d4114481d: Pushed
0b3d0512394d: Pushed
5b1fa8e3e100: Pushed
Done.
> jamsocket spawn hello-app # or spawn via API
backend name: 1e9w4
backend url:  https://1e9w4.jamsocket.run
status url:   https://api.jamsocket.com/backend/1e9w4/status
ready url:    https://api.jamsocket.com/ready/1e9w4
Containerize your server
Upload it to Jamsocket
Spawn instances by API

Session
Backends

Jamsocket lets you spin up session backends on the fly, making hard
things easy.

[Multiplaye]

Real-time collaboration

Share backends among users to build multiplayer collaboration that
scales effortlessly.

[Data]

Data-intensive apps

Build desktop-class data apps that run in the browser by running
memory-intensive work in a session backend.

[Devtools]

Developer tools

Run user code and compiler toolchain components in a per-user
sandbox.

Want to learn more? Read our blog post about session backends.

Serverless,
or not.

You can use Jamsocket to start session backends on our managed
cluster and never think about servers.

If you prefer to run backends on-prem, you can use Jamsocket as a
managed control plane to run backends on your own servers with our
bring-your-own-compute model. We manage scheduling, DNS,
certificates, and observability so you don't have to.

Contact Us

Get Started

Sign up today to get started.

Starter

Build personal projects or try out Jamsocket.

Free

Production

Use Jamsocket in a production app.

From $25/month

B.Y.O.C.

Bring your own compute, use our control plane.

Contact us

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Open source

Jamsocket is built on Plane, our open-source session backend
implementation.

PlanePlane on GitHub
Jamsocket

Created by Drifting in Space Corp.