Carrd - Simple, responsive one-page site creator.
TrackDuck - Visual feedback for web design and development.
Landing Pages in MailChimp - Easy to build, custom landing pages for free
Valist - Automatically created staging environments for every update with a shareable link for testing
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.
Usersnap - Usersnap is a customer feedback software for SaaS companies that need to constantly improve and grow their products.