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OpenUI5. Build Once. Run on any device.

OpenUI5 lets you build enterprise-ready web applications, responsive to all devices, running on almostany browser of your choice. It's based on JavaScript and follows web standards.It eases your development with a client-side HTML5 rendering library including a rich set of controlsand supports data binding to different data models (JSON, XML and OData).

And... it's free and open source: OpenUI5 is licensed under the Apache License, Version 2.0 - seeLICENSE.txt.It also contains third-party open source modules. See the list and respective licenses inTHIRDPARTY.txt.Third-party module license information is also available in machine-readable format in theREUSE.toml file.

Check out ourcontrol playgroundas well as a number ofsample applications.

Go to thedownload page and get the complete UI5 runtimeand the UI5 SDK containing the documentation and many example apps as well as the complete runtime.

Or useUI5 CLI, the recommended tool for working with OpenUI5! It allows you to manage your framework dependencies and to build optimized packages for all applications, components and libraries.Get startedhere.

Try theHello World, readtheDeveloper Guideand refer to theAPI Reference.UseApp Templates as a foundation for your developments (available in SAP Business Application Studio or here onGitHub).Check out theSAP Community Forum for 20,000+ questions and answers andstackoverflow (use the tag "sapui5") to discuss code-related problems and questions. Or join theOpenUI5 Slack.

You can get the sources and build UI5 on your own, please check thedocumentation for the UI5 development setup. You might then want to understand howcontrol libraries are structured and controls are developed.Maybe there's a bug you could analyze and fix?