icedtea-netx 1.2.3-0ubuntu0.12.04.1 (i386 binary) in ubuntu precise

 NetX provides a drop-in replacement for javaws (Java Web Start). Since
 upstream NetX is dormant, IcedTea is hosting and modifying the sources
 in the IcedTea-Web directory.
 .
 IcedTea's NetX currently supports verification of signed jars, trusted
 certificate storing, system certificate store checking, and provides
 the services specified by the jnlp API.