# single-spa documentation

- [Registering applications](/docs/root-application.md)
- [Building applications](/docs/applications.md)
- [API reference](/docs/single-spa-api.md)
- [Separating applications out](/docs/separating-applications.md)
- [Ecosystem](/docs/single-spa-ecosystem)
- [Migrating existing apps](/docs/migrating-existing-spas.md)
