Spring Edge Alternatives [Page 4]

Chat and Voice/Video Chat for React Native, Flutter, Cordova, Web, NativeScript, based on XMPP&WebRTC.

freemium

WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.

free

VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. It’s inexpensive, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM.

Try for free paid Free Trial $4.99 / Monthly (User)

Clockwork is an Easy Text Message API. An SMS API for Developers. Build powerful apps and include SMS. Signup is free, Try it now.

PubNub is a real-time messaging system for web and mobile apps that can handle API for all platforms and push messages to any device anywhere in the world in a fraction of a second without having to worry about proxies, firewalls or mobile drop-offs.

Switch is a cloud-based phone system built for Google Apps users.

WebRTC server infrastructure for powering real-time applications and services

Telecoms Cloud makes it easy to build apps with communication functionality, via a suite of easy-to-use APIs.

OnTimeTelecom offers custom voice and text message broadcasting solutions.

Tyntec offers voice and messaging APIs.

Zang Cloud is a development platform to create voice and messaging apps and integrate it seamlessly with the current communications systems.

Bit6 is a cloud communication platform that delivers WebRTC first real-time communications on any platform and channel.

The easy to use mass and emergency notification platform. Send a phone call, text message or e-mail to your entire list of people in seconds.

freemium

SMSAPI.com is browser platform for bulk SMS and other SMS marketing solutions.