audiodrome wrote:Why is it that some applications need to be "installed," while others (especially downloadable ones) just open and work?
programs that just 'run' (exe files) are usually rather small programs that don't insert themselves too deeply into the system. you just run the executable and that's it. no 'preparation' is needed before you execute it.
but a program that wants to install itself more firmly into the system, like: set up some resitry settings once and for all (and not need to create them every time it's run), create Start menu shortcuts, Desktop shortcuts etc., install help files, well, the installer does those installation procedures so that everything is ready for the program when you run it.
even programs that have 2 versions, with installer and without - the version with isntaller will do all (or some) of the mentioned above, the simpler "without installer" version won't but then you won't have some of the conveniece prepared for you (such as Start menu shortcuts).
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them
In the land of Mordor, where the Shadows lie
M.C. Escher - Reptilien