OneSignal - Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.
Oracle TimesTen - TimesTen is an in-memory, relational database management system with persistence and...
Truepush - Unleash limitless possibilities with Truepush and save up to $600 monthly. Free up to 10K Subscribers on all features.
Datahike - A durable datalog database adaptable for distribution.
PushCrew - Push Notifications for Websites
Datomic - The fully transactional, cloud-ready, distributed database