Self-hosted alternatives to OutSystems
Want low-code app development without handing your data to OutSystems? These 11 self-hosted apps run on your own server (most are open source; licenses are listed below). Cheapest estimated hosting starts at about $3.5/month.
About OutSystems: Low-code application development platform.
| App | Health | Stars | License | Docker | RAM (est.) | From |
|---|---|---|---|---|---|---|
| Budibase direct | Active | 28.4k | ⊘ Proprietary | ✓ | 1 GB | $5/mo |
| Dify.ai | Active | 160.4k | Apache-2.0, Commons-Clause | ✓ | 1 GB | $5/mo |
| Appwrite | Active | 57.9k | BSD-3-Clause | ✓ | 1 GB | $5/mo |
| ToolJet | Active | 41.2k | GPL-3.0 | ✓ | 1 GB | $5/mo |
| Appsmith | Active | 41.2k | Apache-2.0 | ✓ | 2 GB | $10/mo |
| Manifest | Active | 7.6k | MIT | – | 1 GB | $5/mo |
| TrailBase | Active | 5.7k | OSL-3.0 | ✓ | 512 MB | $3.5/mo |
| SQLPage | Active | 2.6k | MIT | ✓ | 512 MB | $3.5/mo |
| Saltcorn | Active | 2.1k | MIT | ✓ | 1 GB | $5/mo |
| UI Bakery | Maintained | 301 | ⊘ Proprietary | ✓ | 1 GB | $5/mo |
| PocketBase | Unknown | – | MIT | ✓ | 512 MB | $3.5/mo |
The options in detail
1. Budibase
Build and automate internal tools, admin panels, dashboards, CRUD apps, and more, in minutes (alternative to Outsystems, Retool, Mendix).
Active Last commit 2026-11-04. 10+ releases in the past year. Latest release v3.51.0-cloud.14 (2026-11-04). Needs roughly 1 GB RAM. How to run it →
2. Dify.ai
Build, test and deploy LLM applications.
Active Last commit 2026-11-05. Latest release 1.19.0 (2026-11-04). Needs roughly 1 GB RAM. How to run it →
3. Appwrite
End to end backend server for web, native, and mobile developers 🚀.
Active Last commit 2026-11-04. 10+ releases in the past year. Latest release 2.7.1 (2026-11-04). Needs roughly 1 GB RAM. How to run it →
4. ToolJet
Low-code framework to build & deploy internal tools with minimal engineering effort (alternative to Retool and Mendix).
Active Last commit 2026-11-05. Latest release v3.21.92-beta (2026-11-05). Needs roughly 1 GB RAM. How to run it →
5. Appsmith
Build admin panels, CRUD apps and workflows. Build everything you need, 10x faster.
Active Last commit 2026-11-05. 10+ releases in the past year. Latest release v2.6.0 (2026-10-28). Needs roughly 2 GB RAM. How to run it →
6. Manifest
Complete backend that fits into 1 YAML file.
Active Last commit 2026-11-04. Latest release manifest@6.29.0 (2026-11-04). Needs roughly 1 GB RAM. How to run it →
7. TrailBase
Open, sub-millisecond, single-executable FireBase alternative with type-safe REST & realtime APIs, built-in JS/TS runtime, auth & admin UI.
Active Last commit 2026-11-03. Latest release v0.35.9 (2026-11-03). Needs roughly 512 MB RAM. How to run it →
8. SQLPage
SQL-only dynamic website builder.
Active Last commit 2026-11-02. Latest release v0.47.0 (2026-10-16). Needs roughly 512 MB RAM. How to run it →
9. Saltcorn
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.
Active Last commit 2026-11-03. Needs roughly 1 GB RAM. How to run it →
10. UI Bakery
Build internal tools, customer portals, and CRUD apps quickly. Configure scheduled jobs and webhooks. Create structure and manage data through a GUI.
Maintained Last commit 2026-05-08. Needs roughly 1 GB RAM. How to run it →
11. PocketBase
Backend for your next SaaS and Mobile app in one file.
Unknown Needs roughly 512 MB RAM. How to run it →
Why self-host instead of OutSystems?
- Own your data — it lives on a server you control, with backups you decide on.
- Predictable cost — a small VPS often replaces per-seat pricing for a whole team or family.
- No lock-in — open-source licenses let you keep running the software even if a vendor disappears.
The trade-off: you are responsible for updates, backups and security. Pick an app marked Active (a commit in the last 90 days) and with Docker support for the easiest ride.
Browse related categories
Other alternatives guides
OutSystems is a trademark of its owner; this site is not affiliated with it. Listings come from the community-maintained awesome-selfhosted list.