Humans.io is a simple CRM for the people you meet. If you're bad with names, or just want to keep track of information you may want in the future, then this was built for you.
Using Humans.io couldn't be any easier. Once you've created a new human, include some notes about them on any topic you think you might search for or want in the future, such as employers, mutual friends, or interests. Use hashtags and keywords to make it easier to filter groups of people.