Replit

Replit is a cloud-based development platform and AI coding environment founded in 2016 by Amjad Masad and Haya Odeh. The platform provides a browser-based IDE, hosting, and AI assistance — enabling users to write, run, and deploy code entirely from a web browser without any local setup.

Replit's AI Agent can build complete applications from natural language descriptions, handling everything from project scaffolding to code implementation, debugging, and deployment. Replit long ran the agent on Anthropic's Claude models; in October 2026 it made OpenAI its default model provider, while users can still choose Claude or other supported models. The platform also offers AI code completion, chat assistance, and collaborative features that make it popular for education, prototyping, and hackathons. Replit supports over 50 programming languages and provides instant hosting for deployed applications.

Replit's browser-based approach and AI-first workflow position it at the intersection of coding education, rapid prototyping, and the emerging "vibe coding" movement where AI handles implementation while users focus on describing what they want. The company's accessibility — no local setup, no DevOps knowledge needed — makes it particularly popular with beginners, students, and non-traditional developers who are learning to build with AI assistance.