Tcl/Java consists of two pieces of software. Jacl is an
implementation of a Tcl interpreter written entirely in
Java. Tcl Blend is a Tcl extension that provides access
to Java from inside Tcl. One can prototype Java code
using Tcl, and much more.
TinyTcl is a tiny version of Tcl, for small footprint machines and embeddable/rommable applications. It is derived from Tcl 6.7 and compiles to less than 60K, 10X smaller than Tcl 7 and Tcl 8.