Inptools - EPANET, documentation and tools
Inptools bundles the current EPANET version for Windows 7 together with documentation and additional tools to process EPANET INP files.
Windows Explorer integration
The Inptools context menu can be opened by right-clicking on an INP file in Windows Explorer:

Inptools for Windows Vista, XP and 2000
Inptools 0.2.2 is the last version that supports Windows 2000, Windows XP and Windows Vista: inptools-setup-0.2.2-1.exe
Source code
The inptools sources can be found here: ghydraulic.git.sourceforge.net/git/gitweb.cgi?p=ghydraulic/inptools
Documentation
Documentation is available in different formats:
inp2shp
The inp2shp command converts EPANET INP files into a set of shape files for further processing using GIS software.
shp2inp
The shp2inp command converts a set of shape files representing a water network into an EPANET INP file. This INP file can be used for hydraulic analysis using EPANET.
inpproj
The inpproj command converts (projects) an INP file with Gauß-Krüger coordinates (GK3) into a new INP file with geographic (WGS84) coordinates.
epanet2csv
epanet2csv converts an EPANET binary result file into two CSV files. CSV files can be read by spreadsheet software like OpenOffice Calc or Excel, relational database software like PostgreSQL or MySQL and GIS software.
License
Inptools are free software released under the terms of the GPL.