The software (preferably free) for automatic analysis of graphs is HEC-HMS.

The Hydrologic Modeling System (HEC-HMS) is designed to simulate the complete hydrologic processes of dendritic watershed systems. The software includes many traditional hydrologic analysis procedures such as event infiltration, unit hydrographs, and hydrologic routing. HEC-HMS also includes procedures necessary for continuous simulation including evapotranspiration, snowmelt, and soil moisture accounting. Advanced capabilities are also provided for gridded runoff simulation using the linear quasi-distributed runoff transform (ModClark). Supplemental analysis tools are provided for parameter estimation, depth-area analysis, flow forecasting, erosion and sediment transport, and nutrient water quality.

you may use HEC-GEOHMS, which works under the environment of ArcGIS to transfer the vector model to hydrological model (HEC-HMS) for extracting runoff hydrographs.

For more information and download the softwares (HEC-HMS and HEC-GeoHMS), you can follow this link :

http://www.hec.usace.army.mil/software/hec-hms/download.html

Dear Fares,

Thanks for your answer. But I mean graph as general term, as a graph model of processes of systems with different nature.

However, your information hydrography me as interesting. I'm doing this alone.

Unfortunately, your link is not correct - there is no information. Please change it.

I don’t know of any automatic program. If you want something that will let you read and manipulate graphs and find maximum matchings, you could try the boost graph library. It has a general maximum matching algorithm. It can produce output in graphviz format (useful if you want to look at the graph). It is free. And I have found it is easy to get it to read graph data in a variety of formats.

The downsides are that you need to be able to use C++, there is no GUI unless you write one, and you may have to think differently about how you use C++.

http://www.boost.org/doc/libs/1_40_0/libs/graph/doc/index.html

Hello Vitalii,

Have a look to our tool COGUI http://www.lirmm.fr/cogui/

There is only a few graph algorithms but with the srcipt feature you can easily import java algorithms (and there is a logical engine). I hope that this will help you.

Dear Vitalii try this link:

http://www.hec.usace.army.mil/software