We are building an abstract cloud for JavaScript engineers. We replace databases, message queues, streaming infrastructure, authorization, and more with open-source JavaScript packages that developers can compose into world-class software. To modularize this capability in JavaScript, we developed a new distributed runtime, hosted by our cloud.
Build exceptional infrastructure with just JavaScript.
Title: Freestyle: Build exceptional infrastructure with just JavaScript. | Y Combinator

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### Build exceptional infrastructure with just JavaScript.

Ben and Jacob met in Calculus class in 10th grade, and tried founding a startup in high school — it didn’t go anywhere, but it taught them a ton. During high school, Ben lead the frontend team for the World Health Organization’s COVID-19 App Team. After high school, Jacob went to Apple and Ben went to college. When there was an opening on his team, Jacob had Ben apply, and Ben left UChicago to go work at Apple. They spent about 2 years at Apple as Senior Engineers in the Conversational Engineering Department, before leaving to found Freestyle. Freestyle is directly inspired by what they saw as their failures of the tech they worked with at Apple.



Freestyle

Founded:2024

Team Size:5

Location:San Francisco

### Active Founders

### Benjamin Swerdlow, Founder

I learned to code in elementary school. In high school I served as a Code Owner and technical lead for the World Health Organization COVID-19 App Collective Team. I did a year of college, then took a job as a consultant for Apple. In 3 months I became a senior. I left Apple to found Freestyle.



### Jacob Zwang, Founder/CTO

I dropped out of college and became an Apple senior full-stack engineer in Conversational Engineering at 19. During the year and a half I worked there, I delivered multiple projects to production at scale. I love building products that inspire and delight customers, but I'm frequently frustrated by poor back-end developer tools. My co-founder and I are building a new cloud and backend workflow so that we and others can build exceptional software in a fraction of the time.



### Company Launches

[### Freestyle: A new way to build fullstack TypeScript apps](

Today, most new apps are written with Fullstack TypeScript, but the tooling around them is still built as though the frontend and backend are separate codebases. We built an open source framework, runtime, and cloud that acknowledges this and removes these unnecessary layers from the development process.

**What?**

Any JavaScript class can be marked as [@cloudstate]( and:

1.  The data in it is now persisted. You query the data with regular JavaScript.
2.  The methods on it can now be called from the front end. No Express/API Routes/tRPC needed!

**Coolest Side Effect:** By building our tooling around Fullstack TypeScript, we enable **full-stack feature packages,** a way for JavaScript developers to package any feature they build and share it in a way that it can be embedded in other projects. Think **npm install mui**, except it’s **npm install chat**, or **npm install auth**. Imagine a world where every third-party SaaS provider today can be an open source package that runs in your application.

**Our Ask:**

**Build with us!** Contribute to our [Open Source Repository,]( or try [deploying an app with us](



### Other Company Launches

### Freestyle: TypeScript for EVERYTHING

A fundamental shift in how we approach web development

[Read Launch ›](
