JConsult & JEnvelope are coded in Java and published under the Eclipse Public License - v 2.0 and therefore OSI Certified Open Source Software. This FAQ contains more information on this particular license.
We use SourceForge to host our installation binaries and GitHub for our code repository. So. . . .
Visit https://sourceforge.net/projects/jconsult-suite/files/downloads/ to browse the downloadable installations & zipped source files for various versions.