# What's the difference between Virgo Server for Apache Tomcat and Virgo Jetty Server?

- Virgo Server for Apache Tomcat (VTS) is based on embedded Tomcat, so its configuration and behaviour is familiar to Tomcat users. Virgo Jetty Server (VJS) is based on Jetty, so its configuration and behaviour is familiar to Jetty users.

- Please refer to the official Tomcat and Jetty sites for details of these projects.

- Both VTS and VJS support standard OSGi Web Application Bundles, but only VTS supports WAR files (see bug 336955).

- VTS supports the hosted repository application and can act as a Virgo repository server, but VJS cannot.

- VTS embeds Gemini Web which in turn embeds (embedded) Tomcat; VJS embeds Jetty.

- Virgo Snaps supports VTS but not VJS.

- VJS has known problems with TagLibs (see bug 349010).