Some quick thoughts from a coder's perspective:

• The source will be available in a Mercurial ...

• Komodo is a Mozilla-based application...

  • Get a slightly tweaked mozilla build (C++, JavaScript, XUL).
  • Get a slightly tweaks Python build (C).
  • Add a bunch of core logic (Python)...
  • Add Komodo chrome (XUL, JavaScript, CSS, DTDs).

  What this means is that work on and add significant functionality...

• Komodo uses the same extension mechanisms as Firefox...

• Komodo builds and runs on Windows, Linux and ...