What is your favourite plugin in emacs?

Question

I find the following things extremely useful in my daily work:

• ido
• emacs muse
• Cscope
• desktop
• tabbar

Answer 1

JDEE. It's a great Java developer addition to Emacs. It adds a lot of the features of the full IDEs (code completion being my favorite).

Answer 2

• Cedet
• gnus
• w3m
• emacs-jabber
• VC & DVC
• AUCTeX
• nxml

Answer 3

• anything - its an easy to extend quicksilver for emacs. Nuff said.
• Cedet
• nxml + nxhtml
• ecb
• yasnippets
• Org (jsut started, already awesmoe)
• All the little libraries I wrote and modified
  • ToDoChiKu Snarl/growl notification bindings for emacs
  • FreeTagging - Provides views into your source code by delicious/flickr style tags. You can filter a piece of source by a tag (or its negation), and it also displays a tag cloud.
  • twit.el Twitter for emacs
  • FileJournal List of most recently used files, with hooks into anything

Answer 4

I've become a huge fan of org-mode and muse-mode. I use muse-mode, which I discovered before discovering org-mode to manage a local wiki where I keep mostly work-related notes.

I use org-mode to manage my tasks and use it to take notes. As a task manager I've found it unbeatable. I intend to migrate my muse-mode notes to org-mode "any day now" ... well, as soon as I get around to hacking up a python script to convert the links for me. I'll miss some of the more wiki-like features of muse mode, but I think in the end I'll profit from having everything in org-mode.

For me, it replaces OmniOutliner and OmniFocus. Plain text. Works on any platform that supports emacs. Easy kept synchronized between computers using source control. What's not to like?