Finally the promise of true sustainable serverless cloud computing is here with Fermyon’s Cloud offering — a platform that allows me to use almost any language, is incredibly easy to use and blazingly fast.”
— Federico Dionisi
Develop serverless WebAssembly apps with Spin
Create, build, test, and deploy an app in just a few minutes.
Spin is the developer tool for building WebAssembly microservices and web applications
Do more, faster. Pick your favorite language and dive into the important part using Spin's serverless framework. Connect your application to Redis, PostgreSQL, and other data services. And skip the boilerplate.
Three commands are all you need
Keep the development loop simple. Create a project with 'spin new'. Build it with 'spin build'. And test it locally with 'spin up'.
See it in action on the Cloud
Ready for production? Pushing to the Fermyon Cloud is only a 'spin deploy' away.
Build full-stack applications
Beta
SQLite Databases
Spin has a built-in database, which is always available - no Ops required.
Key/Value Store
Quickly persist data in your apps with Spin's in-built local KV store.
HTTP & Redis Triggers
Spin has a built-in HTTP web server and pub-sub Redis triggers, routing requests and messages to components.
Relational Database Storage
'Bring your own DB' support for MySQL and PostgreSQL, where you host and manage the database outside of Spin.
Variables & Secrets
Dynamic app variables mean a simpler experience for rotating secrets, updating API endpoints, and more.
frictionless developer experience
Powerful CLI
Start, run and deploy projects with ease. Blinking cursor to deployed app in 66 seconds.
Languages & SDKs
Spin works with many, many different languages. all WASI-compatible languages are supported.
Local Dev
In-built commands like spin watch and spin doctor simplify the writing and debugging of apps.
Powered by WebAssembly
WebAssembly
Run event-driven Wasm services and web applications.
Secure by Default
Ensure clear separation of services with sandboxing.
Open Source
Open Source code written by long-time OSS contributors.
Be among the first to discover tomorrow's technology
PRODUCTS & PROJECTS
From blinking cusor to deployed app in less than two minutes
Fermyon Cloud is the easiest way to deploy and manage native WebAssembly applicationsA micro-CMS for WebAssembly and Spin
Compiled to WebAssembly, Bartholomew can run in any Spin environment.Why Fermyon?
The next wave of cloud compute looks like this
Architected to compile and ship your code as Wasm binaries, Fermyon is a lighter, faster and truly serverless cloud. No need to deal with images, OS layers or instance config.
typical app image
200MB+
200MB+
Hello
supersonic.
Goodbye
cold starts.
0ms
50ms
100ms
150ms
200ms
250ms
Automatically scales-to-zero
Requests are so fast, services can shut back down seamlessly between requests — minimizing compute consumption.
Secure by
default
Every Wasm application runs in a secure sandbox — eliminating cross contamination.
Compute less, save more
A lighter, faster, and more efficient model means lower cost and more sustainable for your business and our planet.
We've got you covered.
Not just JavaScript — compile almost any language to Wasm.
Fermyon’s Spin works with mainstream languages like JS/TS, Python, .NET, Rust, and Go. We adhere to the WASI standard, which means dozens of languages that have support for Wasm can be compiled, built and deployed.
Deploy and run for free
No tricks. You can run apps on Fermyon Cloud without having to worry about an expiration date. You can opt into future, paid upgrades later on if you need to.
Feature Highlights
Serverless AI
Custom Domains
NoOps SQL Databases
Key/Value Stores
