|Stable release||7.6.8  / 14 July 2016|
|License||Apache License 2.0|
Vaadin's default component set can be extended with custom GWT widgets and themed with CSS.
Vaadin is distributed as a collection of JAR files (either as direct downloads, or with Maven or Ivy integration), which can be included in any kind of Java web project developed with standard Java tools. In addition, there exist Vaadin plugins for the Eclipse IDE and NetBeans for easing the development of Vaadin applications as well as direct support of (and distribution through) Maven.
Vaadin applications can be deployed as Java servlets for any Java web server, including Google App Engine. Applications can also be deployed as portlets to any Java portal like eXo Platform. Vaadin also has some deeper integration with the Liferay Portal.
Vaadin 7 supports the following browsers:
- Android 2.3 or newer (no android app available)
- Google Chrome 23 or newer
- Internet Explorer 8 or newer
- iOS 5 or newer
- Mozilla Firefox 17 or newer
- Opera 12 or newer
- Safari 6 or newer
Vaadin 7 requires Java Servlet API 2.4 but also supports later versions and should work with any Java application server that conforms to the standard. The following application servers are supported:
- Apache Tomcat 5-8
- Apache TomEE 1
- Oracle WebLogic Server 10.3-12
- IBM WebSphere Application Server 7-8
- Jetty Application Server 4-7
- Wildfly 8
- Jetty 5-9
- GlassFish 2-4
- Liferay Portal 5.2-6
- GateIn Portal 3
- eXo Platform 3
- IBM WebSphere Portal 8
Development was first started as an adapter on top of the Millstone 3 open source Web framework released in year 2002. It introduced an Ajax based client communication and rendering engine. During 2006 this concept was then developed separately as a commercial product. As a consequence for this, a large part of Vaadin's server-side API is still compatible with Millstone's Swing-like APIs.
On September 11, 2008, it was publicly announced that Michael Widenius, the main author of the original version of MySQL, invested in IT Mill, the developer of Vaadin. The size of the investment is undisclosed.
On May 20, 2009, IT Mill Toolkit changed its name to Vaadin Framework to attract more community. The name originates from the Finnish word for doe, more precisely put, a female reindeer. It can also be translated from Finnish as "I insist". In addition to the name change, a pre-release of version 6 along with a community web-site was launched. Later, IT Mill Ltd, the company behind the open source Vaadin Framework, changed its name to Vaadin Ltd.
On March 30, 2010, Vaadin Directory was opened. Directory added a channel for easily distributing, for free or commercially, add-on components to the core Vaadin Framework. On launch date there were 95 add-ons already available for download.
On Feb 25, 2011, Vaadin Pro Account - a commercial support and tools model was launched.
On Mar 4, 2013, Vaadin 7 was released. This was the first major version release after the launch of Vaadin 6 in 2009.
On Jun 27, 2013, Vaadin 7.1 was released which included pseudo asynchronous push (via server poll); in subsequent Vaadin 7.2 support for WebSocket connections was added.
On Feb 16, 2015, Vaadin 7.4.0 was released. Most profound change was new Grid component suited for enterprise needs to replace old Table component.
Vaadin is considered a Rich Internet Application framework. It may be compared with other RIA Frameworks - especially with similar frameworks like Echo, ICEfaces and ZK - that use a server-side programming model. The server-side APIs are quite similar, providing events and GUI components, but the client-side (i.e. web-browser) interaction differs in that Vaadin uses Java-programmed GWT widgets (ICEFaces uses JSF, ZK uses jQuery, and Echo has its own implementation). Another competitor is the Remote Application Platform, which enables to write SWT & RCP application both for a native execution and on the web.
- "Vaadin releases". GitHub.
- "Michael "Monty" Widenius investing in Finnish IT Mill". Invest in Finland. Retrieved 2009-01-31.
- Asay, Matt. "Monty Widenius invests in Act II: IT Mill". CNET News. Retrieved 2009-01-31.
- Rich Internet applications spur new Web frameworks and technologies