TechWhirl (TECHWR-L) is a resource for technical writing and technical communications professionals of all experience levels and in all industries to share their experiences and acquire information.
For two decades, technical communicators have turned to TechWhirl to ask and answer questions about the always-changing world of technical communications, such as tools, skills, career paths, methodologies, and emerging industries. The TechWhirl Archives and magazine, created for, by and about technical writers, offer a wealth of knowledge to everyone with an interest in any aspect of technical communications.
Another person mentioned Oracle NetBeans IDE. If you're considering
"IDEs", then also check out IBM Eclipse IDE. It has a web editor, has
many plugins, is free, and multi-platform. Both are good platforms with
similar features.
http://www.eclipse.org/webtools/
W3C's Amaya editor-browser might be of use. W3C uses Amaya to test their
specs on, so it's good for standards-based editing (but not for
Flash/Silverlight/etc). Perhaps too lightweight for full-time editor,
but nice to render and perhaps tweak some content written in Vim (or Emacs).
http://www.w3.org/Amaya/Amaya.html
Create and publish documentation through multiple channels with Doc-To-Help.
Choose your authoring formats and get any output you may need. Try
Doc-To-Help, now with MS SharePoint integration, free for 30-days. http://www.doctohelp.com