Not sure if there's a full user space runtime for BPF progs, but there are lots of user space tools which are useful for working with BPF progs. For example, yo

Not sure if there's a full user space runtime for BPF progs, but there are lots of user space tools which are useful for working with BPF progs. For example, you can use veristat (https://github.com/libbpf/veristat https://github.com/libbpf/veristat) to easily see whether a BPF prog would be verified, and collect statistics, etc.