About ActiveTcl
The industry-standard Tcl distribution, available for Windows, Linux, Mac OS X, Solaris, AIX and HP-UX. Developers worldwide rely on ActiveTcl’s completeness and ease-of-use, while corporate users protect their infrastructure and stay competitive with quality-assured ActiveTcl business solutions.

ActiveTcl is 100% compatible with the reference distribution of Tcl. Code tested with ActiveTcl will run on any Tcl installation that has the appropriate extensions installed.

ActiveState is committed to making Tcl easy to install and use on all major platforms. This release of ActiveTcl brings you the most stable release of Tcl in binary form. It also includes several of the most popular extensions pre-compiled and ready to use. Beginning with this release, we distribute and install the demos and examples of the various packages.

ActiveState also provides business solutions of dynamic languages, including enterprise distributions and OEM licensing, that offer guaranteed stability, expert support, unparalleled quality and cost-efficiency to organizations.

What’s New in this Version
- ActiveTcl 8.5 now runs 10% faster than the previous version, due to bytecode optimizations, object caching and reduced memory usage. Developers will also benefit from richer time and date tools including year-2038 compliance, and a new and simpler module packaging standard.