After several years of exploring, my current gotos are:
* Minion for IP for scheduling + edge crossing minimization.
* cvxpy (wrapping ECOS, OSQP, and SCS by default) for convex optimization for making nice geometry.
* Z3 and STP for SAT/SMT for program analysis.
All are FLOSS, which is my main criterion in many situations.
Beyond that, I like minion for its focus on only providing efficiently implementable primitives, cvxpy for the awesome lectures and documentation the folks behind it have produced, and z3 + stp for their use in tools I like, such as klee.
* Minion for IP for scheduling + edge crossing minimization.
* cvxpy (wrapping ECOS, OSQP, and SCS by default) for convex optimization for making nice geometry.
* Z3 and STP for SAT/SMT for program analysis.
All are FLOSS, which is my main criterion in many situations.
Beyond that, I like minion for its focus on only providing efficiently implementable primitives, cvxpy for the awesome lectures and documentation the folks behind it have produced, and z3 + stp for their use in tools I like, such as klee.