Code Browser

Pros: This is how life with Code Browser is:
Start writing code
Initialization
Globals
Main loop to do requested tasks
Opening screen
Do task A
Do task B
...etc.

Each of the above is a link to an entire tree of code going as deep as you need.
When it's been three years since you've looked at this source and you need to add a feature to task B, look how easy it is to find your way to the place you need! Code Browser is the only editor that lets you create your own hierarchy just the way you want it, just the way you think, no troubles.
No other editor lets you do this. Every other editor wants to decide for you what gets folded and what doesn't (usually by looking at the code itself...but code isn't how ANYONE outlines and solves programming problems).

Cons: No one you know is using this wonderful program or has even heard of it. Everything about the program depends on one guy who wrote this editor in a language that no one (except him) uses. So, you get what you get.

Overall: I have used many text editors, some of them with lots more "features" and bells and whistles, but when I want to do serious development of program, I always go to Code Browser because it lets me write code naturally and evolve the concepts easily. Any phrase I like, any word, anything can be a link to an entire world of code (and further links) below it. So writing code is super easy because the editor is supporting the way human beings think (not just how they use a particular coding language).