winedt was developed by aleksander simonic in 1993 for windows 3.1. it was uploaded to ctan in 1995 as shareware for windows 3.1 and windows 95. version 5.6 runs well on windows xp and vista. version 6.0 was released for windows 2000, xp and 7 on march 17, 2010. since version 8.0 32- and 64-bit binaries are provided.