head to head · open source
ToolJet vs Structr
ToolJet has 41,179 GitHub stars, 5,510 forks, 1,204 open issues and last shipped yesterday. Structr has 828 stars, 161 forks, 5 open issues and last shipped 22 days ago. ToolJet leads on adoption by 4,873% (41,179 vs 828 stars). ToolJet is written in HTML under AGPL-3.0; Structr is written in Java under a custom or non-standard licence. ToolJet has attracted 13% as many forks as stars, Structr 19%. ToolJet was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (low-code, low-code-development-platform), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| ToolJet | Structr | |
|---|---|---|
| GitHub stars | ★ 41K | ★ 828 |
| License | AGPL-3.0 | Custom / other |
| Written in | HTML | Java |
| Last push | 2026-11-02 | 2026-10-12 |
| Forks | ⑂ 5.5K | ⑂ 161 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick ToolJet if
- You weight community size — 41K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches HTML
- You value the larger contributor base for long-term maintenance
pick Structr if
- You want the Structr feature set and don't need the biggest community
- You prefer the Custom / other license terms
- Your stack matches Java
- You evaluated both and Structr fits your workflow better
About ToolJet
ToolJet is an open source platform for building internal tools: admin panels, dashboards, and operational apps that run on your existing databases, APIs, and SaaS systems. Build them by prompting. ToolJet AI turns a description into pages, queries, and components, and the coding agent you already use can do the same through ToolJet's MCP server. Agents build against ToolJet's real component and data contracts rather than emitting free form code, so what you get is an actual ToolJet app: one your team keeps editing in the visual builder, under the same permissions, environments, and version history as everything…
read the full ToolJet overview →
About Structr
Structr brightgreen) purple) Overview Structr is an open source generic low code development and runtime platform built on graph technology. It is not limited to any predefined use case and supports the creation of fully custom applications — including web applications, graph database backed backends, data centric systems, middleware, and integration components. At its core, Structr uses a graph database to store both application components (schema, UI definitions, templates, scripts, workflows) and application/user data. This provides schema flexibility, fast graph traversals, and expressive data modeling…
read the full Structr overview →
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Frequently asked questions
Is ToolJet or Structr more popular?
ToolJet has 41,179 GitHub stars and Structr has 828. ToolJet has the larger community by that measure.
Are ToolJet and Structr free?
Both are open source. ToolJet is licensed under AGPL-3.0, and Structr has no licence declared in this registry. Both are free to self-host.
What is the difference between ToolJet and Structr?
ToolJet is written in HTML and Structr in Java. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, ToolJet or Structr?
Choose ToolJet if you want the larger community (41,179 stars) or its AGPL-3.0 licence terms. Choose Structr if its feature set, stack or Custom / other licence fits better. Both are self-hostable.