Communitech Rev welcomed its fourth cohort of startups this week. Rev focuses on accelerating the sales and marketing processes for companies, and graduates include Bridgit and PiinPoint. The five newest Rev companies have already graduated from programs such as Y Combinator, Tech Stars Mobility, Ryerson DMZ, the Accelerator Centre program and the University of Waterloo’s Velocity program. Taking up residence on the second floor of the Communitech Hub, the companies are: Alert Labs, Chalk.com, Livegauge, PitStop, and Reebee. Read more about these companies on Communitech's blog.