OXygen

Synopsis
 is a high-powered XML editor with built-in support for TEI. Fairly easy to use, but slow because of use of JVM, leading to cross-platform interface that doesn't feel right in any one operating system.

Features
http://www.oxygenxml.com/features.html

As to slowness, I have a 21MB XML file that is processed using XSL 2.0 to produce an inital (provides links to the child pages) HTML file and 252 child HTML pages. oXygen reports a successsful transformation after 0.3 MS (thousandths of a second). Machine is a OS X (intel) 10.4.10, with 3GB of RAM.

System requirements
Runs under Windows, Linux, and Mac operating systems. Requires JVM. See http://www.oxygenxml.com/download.html.

Source code and licensing
Closed source. Academic licenses available for $48 per person, allowing you to install for your own use on many computers and use with the current major version number. Discount available for TEI subscribers and individuals from TEI member institutions: contact info@tei-c.org for information. Free 30-day trial license available.

Support for TEI
Comes with TEI schemas and Sebastian Rahtz's stylesheet library, ready to work out of the box.

See directions posted to TEI-L to use  with the very latest version of TEI.

Language(s)
Interface and documentation available in English.

Documentation
http://www.oxygenxml.com/documentation.html

Tech support
http://www.oxygenxml.com/techSupport.html

Can buy maintenance and support pack, providing free upgrades and tech support.

User community

 * http://www.oxygenxml.com/mailman/listinfo/oxygen-user/
 * http://www.oxygenxml.com/forum/

Current version number and date of release
8.2 (2007-05-07)

History of versions
See http://www.oxygenxml.com/software_archive.html.

How to download or buy
http://www.oxygenxml.com/download.html