This is one of my favorite API troubleshooting tools and I can't seem to find an adequate replacement. Requestb.in which Runscope also operated has been shut do

This is one of my favorite API troubleshooting tools and I can't seem to find an adequate replacement. Requestb.in which Runscope also operated has been shut down as well. Haven't been able to get Hookbin, Beeceptor or Mockbin to work for me.