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stage: Manage
group: Import and Integrate
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
---

# Develop with GitLab **(FREE ALL)**

Automate with GitLab and integrate with external applications.

- [Integrations](../integration/index.md)
- [Webhooks](../user/project/integrations/webhooks.md)
- [REST API](rest/index.md)
- [GraphQL API](graphql/index.md)
- [OAuth 2.0 identity provider API](oauth2.md)
- [Editor and IDE extensions](../editor_extensions/index.md)