[lockhouse]

The best part is that Lazarus is write once, compile anywhere. It works on all major desktop OSes and even some less mainstream ones.

[badsectoracula]

Yeah though in practice it is more "write once, compile anywhere, debug everywhere" :-P as there are often minor (and sometimes major) inconsistencies between the underlying widget libraries (not Lazarus' fault though, if anything there is a lot of effort put into providing as much consistency as it can).