ActiveState Community

TabSwitcher allows to switch between editor buffer typing buffer names

It allows to compare folders and files using the side-by-side approach.

MoreKomodo adds new operations on files, text conversion function and find in file panel enhancement

These features are accessible from context menus

HTML Entities Panel extension for komodo

This is a Komodo port of Xultris by 'mackers'*, a Firefox extension of the infamous Russian block-puzzle game. Added here to satisfy David Sklar's assertion that any sufficiently advanced editor will implement tetris.

This extension adds some features useful for text editor

It's simple extension which simplify switching between opened documents. The original idea of this extension came from Adam Groszer in this post. More about you can find in my blog.

This extension shows how to add a test harness for Komodo 4.4
unit test integration (Komodo IDE only). This serves more as
an example of how to write a Komodo-compatible plugin. I picked
Nose (yucky pun not intended) because it was easy to do,
and useful, but Brandon Corfman's the go-to guy on this
framework.

This extension will turn tabs into a menulist. It also includes the ability to use long filenames in the file tabs, and add a droplist of open files in the editor tab area. Consider it experimental, and an example of funky things you can do to XBL and XUL. After installing, go into preferences, and there will be a new tab under "Appearance". You can turn on/off the options there.

Support for autocompletion in DITA files. Includes templates for topic, task, concept, reference and ditamap files.