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GoZen.io - GoZen Growth is a user-friendly email marketing software with outcome-driven and industry-specific email templates. Get started and grow your business now.

ArangoDB - A distributed open-source database with a flexible data model for documents, graphs, and key-values.

Brevo - Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.

Redis - Redis is an open source in-memory data structure project implementing a distributed, in-memory key-value database with optional durability.

MailChimp - MailChimp is the best way to design, send, and share email newsletters.