A question asking how to accomplish a task with some specific software, as opposed to looking for some software to accomplish that task, would be off-topic. Such questions would typically be on-topic for Super User for end-user software and for Stack OverflowStack Overflow for programming questions.
It may happen, sometimes, that the asker already has the software that they need but don't know it, as in your SciTE example. If that's the case, then so be it. “You don't need any third-party software for this task” is a valid, if rare, answer here.