It is great to have this software. It feels like Dota Encyclopedia in your hand.
This Dota Database program can be downloaded as EXE (14mb) file or SWF (10mb). You need Adobe Flash Player to open SWF file and it can opened with any Internet Browser. Below you can check download links :-).
Here is the download link:
Dota Hero Guide v1.4 (DHG v1.4)
Mirror 1 (14 Mb - DHG v1.4.EXE)
Mirror 2 (10 Mb - DHG v1.4.SWF)
Dota Item Guide v1.2 (DIG v1.2)
Mirror 1 (3.96 Mb - DIG v1.2.EXE)
Mirror 2 (1.62 Mb - DIG v1.2.SWF)
Check this program official thread on Dota Allstars Forum.