We use Common Lisp to build compilers and simulators for quantum computers at Rigetti [0,1]. I wouldn’t consider the development stagnant. SBCL makes regular r

We use Common Lisp to build compilers and simulators for quantum computers at Rigetti [0,1]. I wouldn’t consider the development stagnant. SBCL makes regular releases, including huge improvements (e.g., ported to risc v) and bug fixes. It’s easy to find commercial support for Common Lisp as well. I love Scheme and Common Lisp both, but CL is quite a workhorse when it comes to difficult, professional work on teams. [0] https://github.com/rigetti/quilc https://github.com/rigetti/quilc [1] https://github.com/rigetti/qvm https://github.com/rigetti/qvm