v5.00 is currently updated as of patch [1.66.1]
What for
Change all concepts names from
Test Menu to final ones. eg: Yogi->WildSoul, pandaemonium->DoomBringer
Why
Simply because I found it easier, for me at least.
Screenshot
Before --> After, Before --> After
(Lists are sorted by alphabet, so you will not see both sides listing same Hero/Item)

Download
There is another version with
DotA Name Mod from Warchamp7 just because I've to fix some typos for it.
S2Z version
(Without DotA names)
http://www.mediafire.com/download.php?ournwmydr0t
(With DotA names)
http://www.mediafire.com/download.php?m0zwxmjwrgr
Installing S2Z
Download the file into the games folder game/ folder.
The default locations for these are:
Linux: /home/<username>/HoN/game/
Windows 7: C:\Program Files\Heroes of Newerth\game\
Windows Vista: C:\Program Files\Heroes of Newerth\game\
Windows XP: C:\Program Files\Heroes of Newerth\game\
Mac:
1. Press Finder
2. Press Applications
3. Right click 'Heroes of Newerth', and press Show containing files
4. Open Game folder
5. Move file here
HoNMod version (Thanx to hsram!!)
HonMod version should now be compatible with 99% of mods, unless that mod modify same lines of code as mine.
(Without DotA names mod)
http://www.mediafire.com/download.php?jqnmmoovudn
(With DotA names mod)
http://www.mediafire.com/download.php?cdiygmzmwnz
Installing HoNMod
Mods (*.honmod files) go into the game\mods sub-directory of your HoN install (which will be created when you first launch the program). Any mod files in that directory that are compatible will automatically show up in the program.
The default locations for this directory are:
Windows: C:\Program Files\Heroes of Newerth\game\mods
Linux: /home/<username>/HoN/game/mods
Mac:
1. Press Finder
2. Press Applications
3. Right click 'Heroes of Newerth', and press Show containing files
4. Open Game folder
5. Open mods folder
6. Move *.honmod files here
Hint: Drag .honmod into ModMan works too, as long it is compatible.
Plans for the Future
I'm not a programmer, all I did on this mod is Copy+Paste+Copy+Paste+Copy+Paste+Copy+Paste
so I can not add any feature and will only update this mod when there is new names from newest patch.
Known Issues
You will not be able to see Hero/Item icons in Match Stats, although the recent games you played before closing HoN are still view-able..
Possible/ETA fix? Can't tell, sorry for my fail.
Changelog
5.00 - Jan 20, 2010
HoNMod versions are now truly folder-less, means only the mod that modify same line of code would remain incompatible.
4.00 - Jan 20, 2010
Added new changes from 1.65
(That's it??!!, then WTH 4.00? Cause it's 2010, RAWR!!)
2.70 - Dec 20, 2009
Added new infos from 1.62
2.60 - Dec 14, 2009
Added new infos from 1.61
2.50 - Dec 6, 2009
Added new infos from 1.60
2.40 - Dec 2, 2009
Added new infos from 1.59
2.30 - Nov 22, 2009
Added Plated Greaves
Fixed Corrupted Disciple and Electrician's recommended items
2.20 - Nov 8, 2009
Added new infos from 1.53.1
HoNMod version with DotA names now become only one mod, no more "extract and load 2 mods".
2.10 - Nov 4, 2009
Added new infos from 1.52
2.00 - Nov 2, 2009
Revamp completely the Heroes folders, should now be compatible with any other "Heroes" mods.
1.11vHoNMod - Oct 28, 2009
It should now works with SotM, again?!
1.1vHoNMod - Oct 24, 2009
Should now works with SotM as well as the mods that use "entities_en.str"
1.00 - Oct 24, 2009
Initial release