Komodo Edit Now Open Source
Komodo Edit, based on the award-winning Komodo IDE, offers sophisticated support for all major scripting languages, including in-depth autocomplete and calltips, multi-language file support, syntax coloring and syntax checking, Vi emulation, and Emacs key bindings. Komodo Edit is built on the Mozilla code base, and is now licensed under the same terms as Firefox: Mozilla Public License (MPL), GNU General Public License (GPL), and GNU Lesser Public License (LGPL).
This an amazing product, and this is huge news. The plugin system is also great and there are already a few cool plugins available.