I hate when software changes. When I'm buying software, I want for it to stay as it is. All new features don't bring anything but bloat. All I need is bugfixes and security fixes. It does not require a significant investments. So my ideal software is when developer spends some time, builds a program, sells it and spends a little time keeping it alive.

There are some exceptions. For example Intellij Idea should support new Java versions which might require significant development. But those are exceptions (for example I hate almost all new Intellij Idea features, thankfully most of them could be disabled).