There are many available plugins, but, of course, we’ll not use all of these, so here’s some selected plugins that should be known by developers.
IndentByFold is an auto indent plug-in for Notepad++ based on the language folding level.
Quicktext is a Notepad++ plugin for text substitution with multi field inputs. It’s similar to Tab Triggers in TextMate, Resharper/CodeRush in Visual Studio. PLEASE UPDATE Notepad++ v5.4.4 if QuickText isn’t functional.