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[](https://www.webcomponents.org/collection/vaadin/vaadin-core-elements)
[](https://gitter.im/vaadin/vaadin-core-elements?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
# Vaadin Core Elements
[Vaadin elements](https://vaadin.com/elements) are an evolving set of open sourced custom HTML elements, which seamlessly extend the [Polymer Element Catalog](https://elements.polymer-project.org) with high-quality user interface components commonly needed in modern mobile and desktop business web applications. The following elements are included:
- [vaadin-combo-box](https://github.com/vaadin/vaadin-combo-box)
- [vaadin-context-menu](https://github.com/vaadin/vaadin-context-menu)
- [vaadin-date-picker](https://github.com/vaadin/vaadin-date-picker)
- [vaadin-grid](https://github.com/vaadin/vaadin-grid)
- [vaadin-icons](https://github.com/vaadin/vaadin-icons)
- [vaadin-split-layout](https://github.com/vaadin/vaadin-split-layout)
- [vaadin-upload](https://github.com/vaadin/vaadin-upload)
Vaadin Core Elements is a bundle that contains all the free elements, licensed under the Apache License 2.0. In addition, we have commercially licensed elements, such as [Vaadin Charts](https://github.com/vaadin/vaadin-charts).
## Learn more
See the list of elements, demos and documentation, instructions how to get started, video tutorials, application demos and more by visiting:
### [vaadin.com/elements ›](https://vaadin.com/elements)
---
## Roadmap
See https://vaadin.com/roadmap for a high level roadmap that is updated once a week.
## Contributing
We would absolutely love to get the community involved, and we welcome any form of contributions – comments and questions on different communication channels, issues and pull request in the repositories, and anything that you build and share using our elements.
### Get in touch with the team
The chat and the forum category are dedicated channels for this project, while the Twitter, Facebook and G+ pages are common for all Vaadin related discussion (including the Java framework).
- [Chat](https://gitter.im/vaadin/vaadin-core-elements)
- [Forum](https://vaadin.com/forum/#!/category/9848927)
- [Twitter](https://twitter.com/vaadin)
- [Facebook](https://www.facebook.com/vaadin/)
- [G+](https://plus.google.com/communities/108116678608923665301)
### Some ways to help:
- **Test the elements and provide feedback**: We would love to hear your feedback on anything related to the elements, like features, API and design. The best way to start is by [trying them out](https://vaadin.com/docs/-/part/elements/elements-getting-started.html). And to get a quick response, either drop a question/comment on the chat or open an issue in GitHub.
- **Report bugs**: File issues for the elements in their respective GitHub projects. You can find links to them from https://vaadin.com/elements
- **Send pull requests**: If you want to contribute code, check out the development instructions below.
We encourage you to read the [contribution instructions by GitHub](https://guides.github.com/activities/contributing-to-open-source/#contributing) also.
## Development
If you want to develop the elements yourself see the [development instructions](DEVELOPMENT.md) that apply to all Vaadin elements.
## License
Apache License 2.0
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