# Lowcoder Extension

- [Opensource Contribution](/lowcoder-documentation/lowcoder-extension/opensource-contribution.md)
- [Develop UI components for Apps](/lowcoder-documentation/lowcoder-extension/opensource-contribution/develop-ui-components-for-apps.md)
- [Develop Data Source Plugins](/lowcoder-documentation/lowcoder-extension/opensource-contribution/develop-data-source-plugins.md)
- [Use third-party libraries in Apps](/lowcoder-documentation/lowcoder-extension/use-third-party-libraries-in-apps.md)
- [Day.js Date handling](/lowcoder-documentation/lowcoder-extension/use-third-party-libraries-in-apps/day.js-date-handling.md)
- [Import your own JavaScript Library](/lowcoder-documentation/lowcoder-extension/use-third-party-libraries-in-apps/import-your-own-javascript-library.md)
- [Custom component](/lowcoder-documentation/lowcoder-extension/custom-component.md)
- [Lowcoder Open REST API](/lowcoder-documentation/lowcoder-extension/lowcoder-open-rest-api.md)