Code Editors

Lists of Editors for Mac and Windows.
Now, just about anything that works with simple text will suffice for a code editor, but here are some powerful and popular ones.

FlashDevelop

For PCs.

FlexBuilder 3 Public Beta

For Mac OS X & PC.
Highlights:

• Native support for Adobe AIR – Flex 3 introduces new components and incorporates the Adobe AIR development tools into the SDK and Flex Builder.
• Persistent framework caching – You can make Flex 3 applications as small as 50K when leveraging the new Flash Player cache for Adobe platform components.
• Flex Builder productivity enhancements – Flex Builder 3 introduces refactoring support, new profilers for performance and memory tuning, and code generation tools for data access.
• Integration with Creative Suite 3 – The Flex Component Kit for Flash CS3 allows Flash CS3 users to build components that can be seamlessly integrated into a Flex application, while Flex Builder 3 adds new wizards for importing assets from CS3 applications as skins.
• Advanced DataGrid – The Advanced DataGrid is a new component that adds commonly requested features to the DataGrid such as support for hierarchical data, and basic pivot table functionality.
• First steps toward open source Flex. As a first step toward making Flex an open source project, we've opened up the Flex and Flex Builder bug tracking system to the public, as well as published detailed roadmap information.

TextMate

For Mac OS X.
30-day trial is available. $60 single license. 30 seats for $913.
TextMate brings Apple's approach to operating systems into the world of text editors. By bridging UNIX underpinnings and GUI, TextMate cherry-picks the best of both worlds to the benefit of expert scripters and novice users alike.