Carrd - Simple, responsive one-page site creator.
Palaround - Meet people you should be friends with.
Landing Pages in MailChimp - Easy to build, custom landing pages for free
Topick - Gather around your favorite topics.
Bumble - Bumble is a social network that allows you to feel empowered while you make those connections, whether you’re dating, looking for friends, or growing your professional network. One first move on Bumble could change your life.
GetReal - Meet new people, in person