Recent changes

Tcl Community News

Tcl/Tk 9 is a new major version of Tcl/Tk. See Tcl Developer Xchange for a summary of the most noteworthy changes.

Subscribe to the Fosstodon @tcl_tk or X @TclLang feeds for happenings and interesting stuff from the Tcl world!

For monthly virtual meetups that anyone is free to join, see Monthly Virtual Meetup or the Europe-centric Monatlicher virtueller Tcl Stammtisch.

See Tcl Conferences for upcoming and past Tcl conferences, the latest of which was held in Vienna on July 16 & 17, 2026.

Tcl/Tk 9.1b1 released (18 September 2026). Downloads

Tcl/Tk 9.0.4 released (27 June 2026). Downloads

Tcl/Tk 8.6.18 released (12 May 2026). Downloads

Less detail

Tuesday September 8, 2026
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Monday September 7, 2026
Over-21 Game Shell and Numerical ▲ minor	gold US
Snippets Concepts LLM Overflow Area ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Sunday September 6, 2026
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Meyer Ritchie dennis good image	gold US
Snippets Meyer Ritchie dennisx image	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem pix2 image	gold US
Snippets Hilbert Decision Problem pix image	gold US
Snippets Hilbert Decision Problem pix image	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power Shannon pix image	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers ▲ minor	gold US
Snippets Explosive Power of Shannon’s Chess Numbers	gold US
Saturday September 5, 2026
Paul Obermeier ▲	paul DE
Img ▲	paul DE
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Recursion Monsters Ramsey image	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory ▲ minor	gold US
Snippets Recursion Monsters Home in Ramsey Theory	gold US
tcl-lsp ▲ minor	apn IN
Friday September 4, 2026
Over-21 Game Shell and Numerical ▲ minor	gold US
Over-21 Game Shell and Numerical ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Construct an icon image in Tcl ▲ minor	TWu DE
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
tcl-lsp ▲	rz DE
tcl-lsp ▲	rz DE
Construct an icon image in Tcl ▲	torsten DE
Construct an icon image in Tcl ▲	torsten DE
Construct an icon image in Tcl	torsten DE
Icon ▲ minor	torsten DE
Thursday September 3, 2026
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation ▲ minor	gold US
Snippets Hilbert Decision Problem into Simulation	gold US
Wednesday September 2, 2026
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Over-21 Game Shell and Numerical ▲ minor	gold US
Over-21 Game Shell and Numerical ▲ minor	gold US
Over-21 Game Shell and Numerical ▲ minor	gold US
Over-21 Game Shell and Numerical ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Over-21 Game Shell and Numerical ▲ minor	gold US
Over-21 Game Shell and Numerical ▲ minor	gold US
Over-21 Game Shell and Numerical ▲ minor	gold US
Over-21 Game Shell Solo image	gold US
Over-21 Game Shell Con image	gold US
Over-21 Game Shell and Numerical ▲ minor	gold US
Over-21 Game Shell and Numerical ▲ minor	gold US
Over-21 Game Shell and Numerical ▲ minor	gold US
Over-21 Game Shell Console image	gold US
Over-21 Game Shell and Numerical	gold US
Over_21_Game_Shell_and _TCL_Slot_Calculator_V2 Demo Example , numerical analysis ▲ minor	gold US
Over-21 Game Shell Panel image	gold US
How Discover TCL/TK? & Survey Form	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲	arjen NL
Tuesday September 1, 2026
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Monday August 31, 2026
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion ▲ minor	gold US
Snippets Ackermann & Sudan Beyond Primitive Recursion	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
TCLFPDF ▲	LAM AR
Sunday August 30, 2026
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Meyer Ritchie L1 Models ▲ minor	gold US
Snippets Concepts LLM Overflow Area ▲ minor	gold US
Snippets Concepts LLM Overflow Area ▲ minor	gold US
Snippets Concepts LLM Overflow Area ▲ minor	gold US
Snippets Concepts LLM Overflow Area ▲ minor	gold US
Snippets Concepts LLM Overflow Area ▲ minor	gold US
Snippets Concepts LLM Overflow Area ▲ minor	gold US
Snippets Concepts LLM Overflow Area ▲ minor	gold US
Snippets Concepts LLM Overflow Area ▲ minor	gold US
Snippets Concepts LLM Overflow Area ▲ minor	gold US