Eplan is a design CAD package used extensively in many industries (Siemens is also using internally for their own electrical design needs and have a direct interface to PLM). It offers a consolidated project environment where planning, documentation and administration of electrical automation projects share the same space with fluid systems for hydraulics and pneumatics,  3D engineering of control panels and switchgear equipment, 2D/3D design and documentation of cables and wire harnesses while providing web-based access to the latest device data from leading manufacturers.

There are many modules and options available depending on the type of application but generally speaking it offers everything one may need for designing automation systems including fluid systems. 

Based on a powerful database it is geared towards Industry 4.0 and can be used for projects from small & simple to large & complex offering major time savings and reducing errors to a minimum.

For more details you check their website: www.eplan.de