2. Code Mirror
Brackets, although being web-based, works in a native shell (Win & Mac versions available) to reach the file system.
7. Komodo Edit
8. Aptana Studio
Eclipse is a free, state-of-the-art Java development environment (there are also JS, PHP and C/C++ versions). It has a very active community and many open source plugins + developer tools built around the ecosystem.
11. Cloud9 IDE
Notepad++ is actually an advanced text editor and a must-have for every developer using Windows. It has syntax highlighters for every popular scripting language and it is usually a perfect fit for a 2nd IDE, for small updates or simpler codes (however, there are many developers who only use it).
15. Amy Editor