A few months ago, Significance Labs was little more than an idea with a beautifully designed home page, a home at Blue Ridge Foundation's hub in Brooklyn, and the seed funding to back up a daring pitch: Why not build technology aimed directly at addressing the needs of low-income Americans? Now, after picking six fellows from a pool of 150 applicants, the Labs is showcasing some inspiring results: five promising examples of working civic tech tools that can demonstrably help the poorest among us. Unlike other start-up incubators, which seek to attract budding companies and then provide them with business development support aimed at helping entrepreneurs impress high-net-worth investors, Significance Labs focused on helping its fellows zero in on the needs...