2600hz Kazoo vs Twilio

2600hz Kazoo
2600hz allows Carriers, ITSPs, Developers and VARs to offer their own VoIP products & services on top of our fully supported and scalable telecom platform.
Twilio powers the future of business communications, enabling phones, VoIP, and messaging to be embedded into web, desktop, and mobile software. We take care of the messy telecom hardware and expose a globally available cloud API that developers can interact with to build intelligent & complex communications systems. As your app’s usage scales up or down, Twilio automatically scales with you. You only pay for what you use - no contracts, no shenanigans.
Face to face in the news:

2014 - Twilio adds MMS messages to its API cloud. 2600hz Kazoo keeps calm

Twilio, the cloud service that allows developers to easily integrate text messaging and VoIP into their apps by way of a set of simple APIs, is today adding a new feature - MMS picture messaging. For example it will allow employees to take pictures of interesting items that have come into the store, and instead of sending MMS messages of these pieces using their own direct numbers to share them - use their work numbers, provided by Twilio. Another use case - is letting customers contact companies by way of their apps to send pictures of broken products to get refunds or for technical help. Twilio MMS will work on all standard phone numbers across the U.S. and Canada, with prices starting at $0.01 per message to receive and $0.02 to send — and going down based on volume.