---
stage: Manage
group: Integrations
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)**

Automate and interact with GitLab, and integrate with external applications.

- [Integrations](../integration/index.md)
- [Webhooks](../user/project/integrations/webhooks.md)
- [Visual Studio Code extension](../user/project/repository/vscode.md)
- [REST API](rest/index.md)
- [GraphQL API](graphql/index.md)
- [Lint `.gitlab-ci.yml`](lint.md)
- [GitLab as an OAuth2 provider](oauth2.md)