npmjs.com

npmjs.com is the world's largest software registry for JavaScript/Node.js packages, used by over 17 million developers to publish, discover, and manage open-source code modules. It's ideal for startups building tech products with JavaScript components, as it serves as a high-authority platform for visibility among developers and organizations worldwide.

For SEO value, publishing a public npm package creates a profile page on npmjs.com with a Domain Rating of 30, generating nofollow backlinks when you include your startup's link in the package's README.md file. While nofollow, the site's massive traffic and authority (largest JS registry) can act as a positive ranking signal for Google, especially for tech startups targeting developer audiences.

Tips for listing: Create a free npm account, develop a simple public package related to your startup (even a utility tool), and publish it via npm publish after setting up package.json and README with your startup link. Ensure the package is useful to encourage installs/downloads for better visibility; keep README clear and include repository links for synergy. No approval needed—publishing is instant for public packages.