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.
CKEditor - Real-time collaborative future-ready rich text editor
Truepush - Unleash limitless possibilities with Truepush and save up to $600 monthly. Free up to 10K Subscribers on all features.
TinyMCE - TinyMCE is a content editor that functions as a plug-in for Wordpress websites.
PushCrew - Push Notifications for Websites
Trumbowyg - Feature-packed WYSIWYG editor in only 15kB of JavaScript