- Richard Suchenwirth has contributed many useful pages dealing with Unicode, dates, graphics, and more.
- Apple Macintosh and Tcl/Tk Tcl/tk on the Mac
- Microsoft Windows and Tcl Tcl (not tk) on Windows
- Microsoft Windows and Tk Tk on Windows
- Windows COM/DCOM/ActiveX/.NET integration with TCLBridge
- Windows Helper Utilities
- Operating System specific Tcl commands
- The question "Why can I not place unmatched braces in Tcl comments?" is answered here.
- What is the Future of Tcl/Tk?
- People often ask about the Changes in Tcl/Tk 8.4 and in particular Changes in Tcl/Tk 8.4.5. Early adopters and futurists like to know about Changes in Tcl/Tk 8.5.