ToolJet
ToolJet is an open-source low-code platform for assembling internal business applications by dragging in prebuilt UI widgets and wiring them to databases, REST/GraphQL APIs, and cloud storage without hand-writing a full frontend. It also supports generating app scaffolding from natural-language prompts and coding-agent integrations.
What gets deployed with it
- PostgreSQL HA Cluster — required First dependency target for persistent application metadata, users, and operational state.
Baseline topologies
| Topology | Minimum nodes | Roles |
|---|---|---|
| single-node-internal-app-platform | 1 | tooljet |
| app-cluster-plus-db | 2 | tooljet, tooljet |
What drives the cost
- Concurrent builders
- Approximate number of people simultaneously editing apps, queries, or workflows.
- Concurrent app users
- Approximate number of end users simultaneously interacting with published ToolJet applications.
- Peak app request concurrency
- Expected peak number of concurrent application, workflow, or API requests handled by ToolJet.
Where it runs
bare_metal, dedicated, cloud_vm
Size ToolJet and get a cost estimate