
1) HTML editor
Found on
https://www.crosswordclues.com/clue/topstyle

TopStyle is a CSS/XHTML/HTML editor for Microsoft Windows developed by Nick Bradbury and now maintained by Stefan van As. The editor is code-centric rather than WYSIWYG, with integrated support for previews using either the Mozilla Gecko, Internet Explorer Trident, or Apple Inc. Webkit layout engines. The software is available as a commercial vers...
Found on
http://en.wikipedia.org/wiki/TopStyle
No exact match found.