EPANET uses a binary file format, but also includes the capability for importing and exporting data in dxf, metafile, and ASCII file formats. EPANET's ASCII file format is called an input file within EPANET, and uses a file extension ".inp". The input file can include data describing network topology, water consumption, and control rules, and is supported by many free and commercial modeling packages.
While EPANET is used as the computational engine for most water distribution system models, most models are developed and maintained in hydraulic modeling packages based on EPANET's computational engine. Some of the major hydraulic modeling packages are:
*[https://www.innovyze.com/en-us/products/water-distribution InfoWorks WS Pro, InfoWater Pro, and InfoWater], developed by Innovyze [An Autodesk Company]
*[https://qatium.com Qatium], developed by Qatium 
*[https://www.fluidit.com Fluidit Water], developed by Fluidit 
*[http://kypipe.com Pipe2000], developed by KYPipe, LLC 
*MIKE URBAN, developed by DHI
* WaterCAD, WaterGEMS, HAMMER, and SewerCAD developed by Bentley's Haestad Methods (Hydraulics & Hydrology) group.
*WatDis, developed by Transparent Blue
* WaterNAM, Water Network Analysis Model, Developed by Streamstech Inc.
* Giswater, open source software developed by the Giswater Association
* [https://gispipe.com GISpipe], software which is easily used for the analysis, design, and operation of water distribution networks Integrated with GIS system developed by Jinbosoft
* [http://www.studioars.com/en/urbano_9_hydra/145/2 Urbano Hydra], AutoCAD/Map3D/Civil3D application software used for the hydraulic calculation, analysis, design and operation of water distribution networks. Integrated with GIS system and ready for BIM workflows developed by StudioARS Company
*[https://softwarepublico.gov.br/gitlab/gsan/geosan/wikis/home GeoSan], open source GIS software to manage water pipes and consumers, developed by [https://www.nexusbr.com/en/ NEXUS GeoEngenharia] available at [https://softwarepublico.gov.br/social/gsan www.softwarepublico.gov.br].
*WateNET-CAD developed by Diolkos3D.
*Esurvey Water - developed by {https://www.esurveying.net], The output Files from EPANET can be used to generate LS and presentable Final Drawings
Most of these applications allow for multiple demand conditions, planning scenarios, and various methods of integrating with other data sources an agency may already have in place not supported in EPANET, such as GIS, and support additional types of analyses not found in EPANET.
ESurvey Water is developed to create Auto Designed Longitudinal Profiles, and auto generation of the final outputs after the hydraulic design is completed in EPANET and other software.