The tacos-core module provides components and ajax behaviour for the Tapestry 5.
To get the latest snapshot release, just add a dependency to it in your pom.xml. The snapshots are available on http://tacos.sourceforge.net/nightly/.
<dependency> <groupId>net.sf.tacos</groupId> <artifactId>tacos-core</artifactId> <version>5.0.0-SNAPSHOT</version> </dependency>