StackBlitz
Browser-Based Development & AI App Builder
- Valuation
- ~$700M(Series B, Jan 2025)
- Total Funding
- ~$135M
- Profit Status
- Pre-profit;rapid user and revenue growth
- Employees
- ~80
About StackBlitz
StackBlitz is the company behind Bolt.new and WebContainers technology, which enables running full Node.js environments directly in the browser. Bolt.new (launched September 2024) became the fastest-growing AI development tool, enabling anyone to build and deploy full-stack web applications from a single text prompt in a browser — no local setup required. Bolt.new reached 1M+ monthly active users by December 2024.
Company History
Founded 2017 by Eric Simons and Albert Pai, StackBlitz pioneered browser-based IDEs with WebContainers technology — a full Node.js runtime running in the browser via WebAssembly. Used by Google Angular, Svelte, and Astro for their documentation playgrounds. Bolt.new launched September 2024 using WebContainers + Claude to enable anyone to build full-stack web apps from text. It immediately went viral, reaching 1M+ monthly active users and driving an $80M Series A fundraise in 2025. Figma-to-Bolt integration added for design-to-code workflows.
Company Timeline
5 milestones- 2017StackBlitz founded; browser-based IDE using WebContainers
- 2022WebContainers technology open-sourced; Node.js in the browser
- Sep 2024Bolt.new launched — full-stack AI web app builder; immediate viral adoption
- Dec 20241M+ monthly active users on Bolt.new; Figma-to-Bolt integration
- 2025$80M Series A raised; Bolt Enterprise for teams; 2M+ projects created
Funding Rounds
1 rounds| Date | Round | Amount | Investors |
|---|---|---|---|
| 2025 | Series A | $80M | Uncork Capital, Abstract Ventures |
Products & Services
4- Bolt.new (AI full-stack builder)
- StackBlitz (browser IDE)
- WebContainers (runtime)
- Bolt Enterprise
People & ecosystem
Key People
- Eric Simons (CEO/Co-founder)
- Albert Pai (Co-founder)
Key Investors
- Uncork Capital
- Abstract Ventures
- Google Ventures
Competitive Landscape
- Replit
- Lovable (GPT Engineer)
- v0 (Vercel)
- Cursor (Anysphere)