ToolJet vs Mastra
Side-by-side comparison to help you choose the best tool.
ToolJet
freemiumOpen-source low-code platform for building and deploying internal tools with 50+ data source connectors and AI-assisted app building. ToolJet provides a visual application builder with a component library, query editor, and JavaScript changeer for building sophisticated internal tools without extensive coding. Its AI copilot feature assists developers in writing queries, JavaScript functions, and connecting data sources faster.
Mastra
freeMastra is an open-source TypeScript AI system for building agents, workflows, and RAG applications. It provides a unified abstraction for LLM calls, tool use, memory, and workflow orchestration with built-in evaluation and observability. Mastra is designed as a production-ready system with a developer experience comparable to Next.js for AI application development.
| Feature | ToolJet | Mastra |
|---|---|---|
| Pricing | freemium | free |
| Category | - | - |
| Rating | 4.1 | 4.3 |
| Best For | Developers building internal tools with maximum data source flexibility | TypeScript developers building production AI agents, workflows, and RAG applications who want a modern, opinionated system with excellent DX |
| Views | 5 | 5 |
Pros
- Completely open-source MIT licence
- Broad data source connector library
- Active development and frequent releases
Cons
- Documentation can be inconsistent
- Enterprise features limited on free tier
Pros
- TypeScript-first for frontend and full-stack teams
- Production-ready with built-in evaluation
- Developer experience comparable to Next.js
Cons
- TypeScript only
- Newer framework with smaller community
- AI copilot for query and code generation
- 50+ pre-built data source connectors
- Visual component drag-and-drop builder
- Multi-page application support
- Self-hosting on any cloud provider
- TypeScript AI agent framework
- Workflow orchestration
- RAG with built-in vector search
- Built-in evaluation
- Model-agnostic