Zapinfo makes building lead lists from Linkedin and other lead services incredibly easy. You can go to a person's profile, 'zap' it, enrich it with other info like their social media, profiles on sites like Github, Linkedin, and other skills repositories so you don't need to individually source them on different websites. You can also directly email leads, save information to your ATS all in a few moments of searching. You can also save into other sales databases and CRM systems. Review collected by and hosted on G2.com.
There is a small learning curve, it seems like they are still learning all of the potential uses so if you don't know what to do with it, you need to work it out, watch their videos and play around until you understand it. There are some videos but they aren't very professional and it will take a little trial and error to figure out how to use it. Review collected by and hosted on G2.com.