With a database of more than a million caregivers nationwide, Sittercity—started in 2001—stormed the nation as the premier babysitter service. Pioneering the online childcare industry, parents in cities like NYC, Boston, and Chicago found themselves freed from the hassle of having to ask a neighbor kid or a passing stork to watch their children. The company has over 7.5 million members and matches families with nannies and babysitters every nine seconds.

Their on-demand service, Chime—a kind of gold-level service created by Sittercity—takes that winning formula and stuffs it full of improvements. Launched in 2015, they personally hand-picked sitters from the top 1% of Sittercity's roster, meeting each one in person. And to really double down on safety, Chime puts each person through a four-step screening process and background check to make sure they're as reliable as a Ford truck spliced with Irish setter DNA. From there, they post introductory videos of each caretaker on the site, giving parents a chance to eyeball prospective sitters, each of whom work for a hourly-rate fee that you pay instantly at the website or via the handy Chime iPhone app.