Open-source alternatives to Retool
Retool builds internal admin apps over your databases and APIs. The list below is every catalog tool tagged Software Development - Low Code, which is the closest the catalog gets to the same job; none of them has been checked feature by feature against Retool.
| Tool | Stars |
|---|---|
Build, test and deploy LLM applications. Apache-2.0, Commons-Clause · released 2026-08-25 | 154,859 |
Backend for your next SaaS and Mobile app in one file. MIT · released 2026-09-06 | 60,980 |
End to end backend server for web, native, and mobile developers 🚀. BSD-3-Clause · released 2026-09-04 | 57,306 |
Low-code framework to build & deploy internal tools with minimal engineering effort (alternative to Retool and Mendix). GPL-3.0 · released 2026-09-07 | 40,861 |
Build admin panels, CRUD apps and workflows. Build everything you need, 10x faster. Apache-2.0 · released 2026-08-13 | 40,826 |
A powerful and easy-to-use website building tool (documentation in Chinese). GPL-3.0 · released 2026-09-01 | 39,684 |
Build and automate internal tools, admin panels, dashboards, CRUD apps, and more, in minutes (alternative to Outsystems, Retool, Mendix, Appian). ⊘ Proprietary · released 2026-09-07 | 28,260 |
Complete backend that fits into 1 YAML file. MIT · released 2026-09-07 | 7,510 |
Open, sub-millisecond, single-executable FireBase alternative with type-safe REST & realtime APIs, built-in JS/TS runtime, auth & admin UI. OSL-3.0 · released 2026-09-04 | 5,596 |
SQL-only dynamic website builder. MIT · released 2026-09-03 | 2,558 |
No-code database application builder for web and mobile applications. One platform for user interface, data backend, durable workflows, email, PDF generation, and AI applications. MIT · released unknown | 2,067 |
Build internal tools, customer portals, and CRUD apps quickly. Configure scheduled jobs and webhooks. Create structure and manage data through a GUI. ⊘ Proprietary · released unknown | 299 |
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