Es), delay differential equations (DDEs), differential-algebraic equations (DAEs), and hybrid differential equations which include multi-scale models and mixtures with agent-based simulations. Other solvers like <a href="https://docs.sciml.ai/NonlinearSolve/stable/">NonlinearSolve.jl for f(x)=0 rootfinding problems</a>, <a href="https://docs.sciml.ai/Optimization/stable/">Optimization.jl</a> for nonlinear optimization, etc. expand SciML to more equation types, offering high features and performance while in