Open source focus
Open Source Alternatives to Widgetapi
4 open source API Platform options similar to Widgetapi, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Every company listed publishes its source: each one carries an open source sector tag and a public GitHub repository.
npm66Developer ToolsOakland, USA$10.6MThe world's largest software registry for JavaScript packages and the default package manager for Node.js.
Open source · Self-hostable
Node.js26Software DevelopmentAn open-source, cross-platform JavaScript runtime environment.
Open source · Self-hostable
Mastra77Agentic AISan Francisco, United States$35.5MAn open-source TypeScript/JavaScript framework for building AI agents, from the creators of Gatsby.
Open source · Self-hostable
Webpack29Developer ToolsOpen-source module bundler for JavaScript applications, transforming front-end assets into static files.
Open source · Self-hostable
| Company | Sector | License | HQ | Funding | Score | Website |
|---|---|---|---|---|---|---|
| npmThe world's largest software registry for JavaScript packages and the default package manager for Node.js. | Developer Tools | Open source · Self-hostable | Oakland, USA | $10.6M | 66 | |
| Node.jsAn open-source, cross-platform JavaScript runtime environment. | Software Development | Open source · Self-hostable | — | — | 26 | |
| MastraAn open-source TypeScript/JavaScript framework for building AI agents, from the creators of Gatsby. | Agentic AI | Open source · Self-hostable | San Francisco, United States | $35.5M | 77 | |
| WebpackOpen-source module bundler for JavaScript applications, transforming front-end assets into static files. | Developer Tools | Open source · Self-hostable | — | — | 29 |