APL64

APL64 is a 64-bit APL interpreter intended as a backwards-compatible successor to APL+Win. Vendor APL2000 began work on the project in 2015 and offered the first release in August 2022.

New APL features include a string datatype written using chevrons, "inner functions" defined using control statements   and   rather than  , inline comments enclosed with glyphs   and   and block comments enclosed by these glyphs doubled   and.