Third Floor is a development studio in Philadelphia crafting professional software for small businesses.

Clients and design partners choose to work with us when they are unwilling to compromise on the quality of their digital experiences.

A clean, fast website that puts your business online with everything you need — homepage, about, services, and contact. Built to load fast, rank well on Google, and look great on every device.
Web apps, mobile apps, and complex sites built for businesses that need more — content management, integrations, booking systems, member portals, or a native iOS and Android experience. We build scalable software with modern tools that's easy to maintain as your business grows.
Online stores built to convert. We handle product catalogs, payments, inventory, and shipping — with a checkout experience that's fast and frictionless. Built on platforms that scale with your sales.

Our projects typically span 4-6 weeks, and cost between $800-$5k. We scope new builds on a project basis, and we offer ongoing maintenance to existing clients post-launch.

We work collaboratively with our clients — we'll sit down with you to learn about your business and discover what you need. We place an equal emphasis on delighting users and achieving business goals to create effective digital experiences that fuel growth for our clients.

We have over 10 years of experience building software at startups, Amazon, and Ring. We use a modern tech stack to deliver best in class software that can scale as your business grows.

Have a project in mind? We'd love to hear about it. Reach out at [email protected] and we'll set up a time to talk.