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But there are: k variants: kona (C, interpreter): https://github.com/kevinlawler/kona https://github.com/kevinlawler/kona klong (C, interpreter): http://t3x.

But there are: k variants: kona (C, interpreter): https://github.com/kevinlawler/kona https://github.com/kevinlawler/kona klong (C, interpreter): http://t3x.org/klong/ http://t3x.org/klong/ kuc (C++, JITted): http://althenia.net/kuc http://althenia.net/kuc oK (JS, interpreter): https://github.com/JohnEarnest/ok https://github.com/JohnEarnest/ok (see also iKe by John Earnest) cousins: J (C, interpreter) http://jsoftware.com/ http://jsoftware.com/ A+ (C, interpreter, unmaintained): http://www.aplusdev.org/index.html http://www.aplusdev.org/index.html Gnu APL (C, interpreter): https://www.gnu.org/software/apl/ https://www.gnu.org/software/apl/ apl.js (JS, interpreter): https://github.com/ngn/apl https://github.com/ngn/apl There's also NARS2000 and a few other APL interpreters related: Numpy and R provide similar functionality, albeit with more verbose (and less fluent) composability. They are usually slower.

throwaway21234 9y ago
Another cousin: Nial (C, GPL interpreter): https://github.com/danlm/QNial7 https://github.com/danlm/QNial7 The author of Nial, Mike Jenkins, has recently released v7 of Nial. Nial is akin to Q in that many of the operators are keywords rather than symbols. Its computational model is slightly different due to its roots in Trenchard More's array theory.
anonu 9y ago
Nice list of alternatives. But the original question was what makes it so special? What does it have that these open-source variants don't?
- ColanR 9y ago
  For a certain set of applications, I believe the difference is speed. K has been said to even outpace C, even though that's the language it's written in. AW did an amazing job with his optimizations.
mamcx 9y ago
I will love to have a verbosed variant of the interpreter, like if "Q" were a eso-lang. This for understanding how it work on the internals. Also, maybe thinking what if make Fortran-like arrays or similar.

throwaway21234 9y ago

Another cousin: Nial (C, GPL interpreter): https://github.com/danlm/QNial7 https://github.com/danlm/QNial7 The author of Nial, Mike Jenkins, has recently released v7 of Nial. Nial is akin to Q in that many of the operators are keywords rather than symbols. Its computational model is slightly different due to its roots in Trenchard More's array theory.

anonu 9y ago

Nice list of alternatives. But the original question was what makes it so special? What does it have that these open-source variants don't?

ColanR 9y ago
For a certain set of applications, I believe the difference is speed. K has been said to even outpace C, even though that's the language it's written in. AW did an amazing job with his optimizations.

mamcx 9y ago

I will love to have a verbosed variant of the interpreter, like if "Q" were a eso-lang. This for understanding how it work on the internals. Also, maybe thinking what if make Fortran-like arrays or similar.