Projects | Hayden Bleasel

I've worked on tons of little projects over the years but these are the ones that I'm most proud of. Many of them are open-source, so if you see something that piques your interest, check out the code and contribute if you have ideas for how it can be improved.

Vercel OSS

I've created a few cool open source projects at Vercel, including AI Elements, Streamdown and Vectr. I also co-authored components.build, the open-source standard for building modern, composable and accessible UI components.

Ultracite

I'm currently working on Ultracite, the AI-ready formatter that helps you write and generate code faster. It's effectively a zero-config Biome preset that provides a robust linting and formatting experience for your team and your AI integrations.

Ultracite is used by Vercel, Adobe, Tencent, Profound, Axiom and at least three government institutions that I know of.

next-forge Acquired

I built a production-grade Turborepo template for Next.js apps called next-forge. It was designed to be an incredibly comprehensive, best-in-class boilerplate with everything you need to build your new SaaS.

I released it for free in a market full of paid boilerplates and grew it to nearly 6,000 stars on GitHub, fostering a community of contributors and partners around it. It got some great coverage after Guillermo Rauch posted it.

Vercel acquired next-forge in 2025 as part of my hiring.

Orate Acquired

I also made Orate — the AI toolkit for speech. It was a library for synthesizing speech, transcribing audio, converting voices and isolating audio.

After growing it to around 400 stars on GitHub, Orate was merged into the Vercel AI SDK in 2025 as transcribe() and generateSpeech() functions.

Kibo UI Acquired

I made Kibo UI, a custom registry of composable, accessible and open source components designed for use with shadcn/ui. The goal was to help developers build richer UIs faster by providing pre-built components like tables, file dropzones, etc.

Kibo UI quickly became a best-in-class shadcn/ui registry with over 3K stars on GitHub. I donated the AI components to Vercel to form the foundation of my first project — AI Elements. The remaining site was acquired by shadcnblocks in 2025.

Refraction Acquired

One of my earlier successes was a tool for learning, improving and generating code with AI called Refraction, which was acquired by Twistag in 2023.

Refraction was used by the world's most innovative companies, including Accenture, AKQA, Amazon, Bentley, Canva, CapGemini, Cisco, Experian, ExpressVPN, Google, H&M, Ikea, John Deere, Nespresso, PandaDoc, Qantas, Rakuten, Red Bull, Repl.it, Roblox, Softbank, Sega, Tiktok, Uber, Washington Post, Wix, Yahoo, Zoho and ZoomInfo and more.

Other stuff

I maintain some open source alternatives to existing tools, including Tersa, an open source alternative to Flora, and Eververse, an open source alternative to Productboard. You can find the source code for these on my GitHub.