The #1 Tcl Solution
Used by Enterprises

Support your mission-critical applications with the world’s most trusted Tcl distribution.

For Development Use

Get a version of the Tcl core language and many of the popular third-party modules
– free to download and use for development purposes.

Download for Free

For Commercial Use

Extensive customization, premium support, and regularly scheduled builds – licensed for use beyond development, as well as redistribution.

Get a Demo

Trusted by Developers, Proven for the Enterprise

Reduce Risk And Deliver Value Faster With ActiveState’s Tcl Distribution

Gain productivity and peace of mind with our commercially supported, quality-assured Tcl distribution. ActiveTcl offers significant time savings over open source Tcl for installing, removing, upgrading, and managing common Tcl modules.

Hundreds of Included Tcl Modules

Save time in your development cycles by starting with a precompiled Tcl distribution for out-of-the-box installation and standardization across the operating systems you rely on, including Windows, Linux and macOS, with options for Solaris and AIX, as well. ActiveTcl includes:

  • Precompiled Tcl distribution for out-of-the-box installation, including ActiveTcl 8.4, 8.5, 8.6
  • Core Tcl binaries
  • Additional binaries for popular packages/modules through TeaPot
  • Extended documentation

View Tcl/Tk Modules Included In ActiveTcl

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Get your Apps to Market Faster

Reduce Risk with Commercially Supported Tcl

  • Comply with corporate support policy requirements with Service Level Agreements (SLAs) that meet your business’ needs
  • Minimize license risk by using our fully reviewed third-party Tcl modules 
  • Minimize legal risk with indemnification coverage 
  • Gain access to older versions of ActiveTcl that are linked against OpenSSL 1.0.2d, if required

Get Enterprise support for Tcl here

Integrated with the ActiveState Platform

ActiveTcl, featuring hundreds of popular packages, is available free for download from the ActiveState Platform. But you can also use the Platform to automatically build your own version of Tcl from source, that can include:

  • Any supported version of Tcl
  • Packages not featured in our ActiveTcl distribution

Create a free account to get ActiveTcl or build your own version.

activetcl platform integration

97% of Fortune 1000 Companies Rely On ActiveState

ActiveState’s enterprise offering includes extensive customization, premium support, and regularly scheduled builds, licensed for production use and redistribution.

Reduce Security Risks
Ensure security with the latest secure versions of Tcl modules and timely updates for critical issues.

Indemnification and License Compliance
Comply with your organization’s open source policies against GPL and GNU licensing, and reduce risk with legal indemnification.

Commercial Support & Maintenance
Keep your IP out of public forums and get faster, more reliable help with guaranteed response times and Service-Level Agreements

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Enforce Code Consistency
Maintain consistency from desktop to production – Windows, macOS, Linux and big iron (AIX, Solaris).

Avoid Lock-In with Open Source
100% compatible with open source Tcl so you can recruit skilled staff, ramp up faster and avoid vendor lock-in.

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Accelerate Time to Market
Spend less time setting things up and more time getting things done, with the top Tcl modules precompiled and ready to go.

Ready to see how we can make Tcl more secure and less costly to maintain over time?

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