From the post:
The version 3.0 of the free LaTeX editor Texmaker has been released yesterday. The most notable changes are: Texmaker
- Extensively modified user interface: no tabs and a fully integrated pdf previewer
- The auto-complete commands list can be extended by users
- Label checking in master/child documents
- A new full-screen mode
- Mouse-over tooltips for mathematical symbols in the panels
- New keyboard shortcuts
- Important bugfixes
If you are going to do serious publishing about topic maps, it is most likely going to be with TeX/LaTeX.
Update: TeXmaker 3.2 released.