TITLE: GAP Editor with Syntax Highlighting for Windows
QUESTION [6 upvotes]: Can anybody recommend a code editor for Windows which has GAP Syntax Highlighting? 
Thank you

REPLY [4 votes]: Thanks for all answers and comments already there. I have updated the question Where is the GAP file editor? How do I save GAP programs? from the GAP F.A.Q to list all available modes in one place. Besides Notepad++ and PSPAd for Windows, it lists some other editors as well. In the future, please check it in the GAP F.A.Q. for any updates.
Posting this is as an answer, to save readers' time from walking through all comments and links.