Tcl is also used for testing enterprise products through the #Expect extension written by Don Libes. Huge corporations such as #Boeing, BMW, Daimler Chrysler, Lucent, #Oracle and especially #Cisco trust Tcl to test millions of lines of code that end up in their products. Cisco ships Tcl in their IOS products.
Tcl is also trusted by #NASA, Fermi National Laboratories, the ISS, NIST, Smithsonian Astrophysical Observatory and the US DoD, among other large companies.
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