Bluefish

Bluefish is a powerful editor targeted towards programmers and web developers, with many options to write websites, scripts and programming code. Bluefish supports many programming and markup languages. It includes snippets sidebar, integrate external filters of your liking, pipe your document, powerful search and replace, Project support, Multiple document interface, Character map of all Unicode characters, Full screen editing, and auto-recovery of changes in modified documents after a crash, kill or shutdown.