MailerLite - Affordable Email Marketing Software. Get all features (Segmentation, Automation, A/B testing) for up to 1,000 subscribers & send unlimited emails for free!

Yusp - Yusp is a next generation, real-time personalization engine having all product modules as defined by Gartner for various business models.

Revue - The easiest way to create and send a curated newsletter

Tuio.org - Tuio is a billing and payment application that allow daycare centers and pre-schools to centralize and manage all parent billing and payment in one place.

Sendy - Sendy is a self hosted newsletter app that sends emails 100x cheaper via Amazon SES

Teachable - Create and sell beautiful online courses with the platform used by the best online entrepreneurs to sell $100m+ to over 4 million students worldwide.