Luupro - Get social about the projects you're working on!
Envisage - Inject contextual help on your site. Point and click style.
Waitlist API - Quick and easy waitlist with built in referral.
Moonshot - Discover trending cryptocurrencies priced at less than a penny
Landing Pages in MailChimp - Easy to build, custom landing pages for free
Product Fit - Measure product/market fit in app with your users.