Boston, Mass. (May 23, 2017) - MassChallenge, the most startup-friendly accelerator on the planet, today announced the 128 early-stage startups that have been accepted into the 2017 MassChallenge Boston accelerator program. Selected by a community of more than 850 expert judges, this years competitive cohort represents the top 8% of applications from around the world, including 12 countries and 16 U.S. states.