Custom Built

Enterprise Solutions

Case Studies

Maya Healthcare

Mobile-first web app design & development

Learn More
Pac Bio

New product development with Angular 2, TypeScript & Webpack

Learn More

Hybrid mobile app development with Cordova

Learn More

Open Source Projects


A modern, reactive TypeScript framework for building robust, enterprise-grade web applications.

Dojo is the successor to the Dojo Toolkit, a full-featured JavaScript toolkit focused on the enterprise, supporting modern and legacy browsers and applications since 2004!


A modern, responsive, and modular data grid. Performant, scalable and embeddable within any application or framework including React and Angular.


An exceptionally flexible stack for full-lifecycle JavaScript and TypeScript testing.

Milestone Mayhem

Created as a tool to teach teams about bad habits and best practices in web development, Milestone Mayhem is a card game that we created to tell the story about life on a development team. On your own or in a SitePen-led workshop, this game is sure to bring laughs, help with team building and encourage healthy discussion about the cards and how they relate to your projects and process.

Check out the game

Trusted by the Enterprise

Are you ready to get started?

Connect with us

About SitePen

Modernizing Apps, Tools & Teams

SitePen pioneered Enterprise JavaScript by creating a first-of-its-kind open source JavaScript framework that scales and sustains some of the world’s largest web applications - and this before the advent of the modern browser. Today, we continue to engineer performance-driven apps for companies like IBM, Intuit & Marriott, maintaining our foothold at the forefront of the modern web. Expect our deliverables to contain experience-based solutions, the highest quality code, and a demonstrated commitment to your success.