Much depend on what you call "program", in "scripting" terms I've written very many, countless, most buggy limited wrapper but very useful time-savers, an example (witch was derived by many others similar, I can't remember them all, this is my version) http://ix.io/3Vbk like this I have around 20+ in use, some written years ago and left almost untouched, some evolved. In "config-as-programs" terms my Emacs config, witch is actually an elisp program is around 4800 lines, my NixOS config, witch is in Nix language, so another program, is a bit more than 1500 SLoC etc. If you means large WebApps, GUIs etc no, I've write some small GUIs and very few WebUIs for some relatives/friends but not for my own personal use...