Self-hostable open-source Retool alternatives
Drag-and-drop builder for internal admin apps over your databases/APIs. Self-host avoids per-user pricing and keeps internal tooling in-house.
Among 4 self-hostable open-source Retool alternatives tracked here, Appsmith currently leads on the Self-Host Health Score (98/100, 40k★, last commit today). For a Raspberry Pi or a low-RAM VPS, NocoBase is the lightest at a documented ~2048 MB (PostgreSQL). 3 of them publish official ARM64 images (Raspberry Pi / Apple Silicon). 3 offer a one-click deploy (e.g. DigitalOcean, Railway).
| Tool | Health | Stars | Database | Min RAM | ARM/Pi | One-click | Updated |
|---|---|---|---|---|---|---|---|
| Appsmith
↗
Low-code platform to build internal apps on any data source. |
98 Thriving |
40k★ TypeScript |
MongoDB | 8192 MB | ✓ ● | DigitalOcean ↗ | today Apache-2.0 |
| ToolJet
↗
Open-source internal-tool builder with 50+ data connectors. |
98 Thriving |
38k★ JavaScript |
PostgreSQL | 4096 MB | ✗ ● | — | today AGPL-3.0 |
| Budibase
↗
Build internal apps + automations fast; bundled internal DB. |
97 Thriving |
28k★ TypeScript |
CouchDB | 4096 MB | ✓ ● | DigitalOcean ↗ | today |
| NocoBase
↗
No-code platform with a data-model-driven plugin architecture. |
96 Thriving |
23k★ TypeScript |
PostgreSQL | 2048 MB | ✓ ● | Railway ↗ | today |
FAQ
What is the best self-hostable Retool alternative?
By the live Self-Host Health Score, Appsmith ranks highest (98/100).
Which open-source Retool alternatives run on a Raspberry Pi?
Those publishing official ARM64 images: Appsmith, Budibase, NocoBase.
Which is the lightest on RAM?
NocoBase, at about 2048 MB.