A cloud-based, agentic development environment designed to accelerate how you build, test, deploy and run production-quality AI applications, all in one place.
United States
+3
21st.dev AlternativesOnly apps categorised as IDEs
The best IDE alternative to 21st.dev is Firebase Studio, which is free. If that doesn't suit you, our users have ranked more than 50 alternatives to 21st.dev and five of them are IDEs so hopefully you can find a suitable replacement. Other interesting IDE alternatives to 21st.dev are Replit, Qoder IDE, Appery.io and Atoms.dev.
filter to find the best alternatives
21st.dev alternatives are mainly Code Editors, but if you're looking for IDEs or AI Coding Assistants you can filter on that. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to 21st.dev.
Alternatives list
- 78 Firebase Studio alternatives
109 Replit alternativesReplit is a collaborative cloud development environment offering in-browser IDE features like AI assistance, real-time collaboration, Git support, hosting, deployment, syntax highlighting, plugin extensibility, ad-free UI, dark mode, and live code sharing.
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Online
- Android
- iPhone
- Android Tablet
- iPad
+1
66 Qoder IDE alternativesQoder is an AI-powered agentic coding platform and IDE that automates complex software development tasks using autonomous AI agents.
Appery.io is a low-code app development platform that makes creating hybrid mobile apps, web apps, and progressive web apps (PWAs) easy.
Cost / License
- Paid
- Proprietary
Platforms
- Online
+3
57 Atoms.dev alternativesAtoms is an AI-powered multi-agent platform that simulates a complete development team including product manager, architect, and engineer. It turns natural language prompts into real apps, websites, dashboards, games, and more.
Cost / License
- Freemium
- Proprietary
Application types
Platforms
- Online
- Software as a Service (SaaS)
+3
China
