Serna 4.2 for Mac was available as a free download on our application library. Serna for Mac lies within Productivity Tools, more precisely Office Tools. The actual developer of this free software for Mac is Syntext.
From the developer:
An easy-to-use WYSIWYG XML editor intended for students, open-source projects, and other non-commercial uses. Authors with virtually no XML experience can start working with structured content in a familiar environment that looks much like a conventional word processor. Serna employs XSLT and XSL-FO to render documents in print-like appearance.
You may want to check out more Mac applications, such as Simply Notes, which might be similar to Serna.
Web Development