SPlisHSPlasH is an open-source library for the physically-based simulation of fluids.
The Marine Systems Simulator (MSS) is software that supplements the textbook "Handbook of Marine Craft Hydrodynamics and Motion Control," 3rd Edition, by T. I. Fossen, published in 2027 (in progress) by John Wiley & Sons Ltd.
SPHinXsys provides C++ APIs for engineering simulation and optimization. It aims at complex systems driven by fluid, structure, multi-body dynamics and beyond. The multi-physics library is based on a unique and unified computational framework by which strong coupling has been achieved for all involved physics.
An RL-Gym for Challenge Problems in Data-Driven Modeling and Control of Fluid Dynamics.