LiquiNet is a free and open source Pipe Network Solver Software

LiquiNet is a program that can solve complex Water, or any other Liquid, Pipe Network problems easily. Based on Paper published by Anthony G. Collins in May 1973, it applies Finite Element Method.

For Windows User:

It runs out of the box. It includes all necessary .dll files. Unpack the zip file and keep the folders and files intact to run. The windows version is a 64 bit version.

For Linux Users:
You will need to have installed Qt & armadillo runtimes to use this.
Needed Dynamic Libraries
liblapack : -version 3
libblas : -version 3
libarmadillo : -version 7
libQt5Widgets
libQt5Gui
libQt5Core
libGL
libpthread
libstdc++ :-version-6
libm :-version-6
libgcc1
libc :-version-6