Share of companies with a recorded size, by employees.
No size recorded: 29
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Frequently asked questions
About the Tcl/Tk data on this page.
How many companies use Tcl/Tk?
Firmable holds confirmed Tcl/Tk detections for 457 distinct companies, 90 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.
Which companies use Tcl/Tk?
sabre systems inc., Carnegie Science and CFD Research Corporation are among the most prominent in the current set.
What industries use Tcl/Tk?
Information technology and services, industrial and manufacturing and professional and business services lead the set, across 16 industries in total.
What size companies use Tcl/Tk?
Adoption concentrates in the 10,001+ employee band, across the companies whose size is recorded.
Where are Tcl/Tk users based?
The United States, Canada, Australia and Singapore account for most detections, across 13 countries.
How current is this data?
90 companies were confirmed in the last 90 days. Last detection 19 September 2026.
