Twilio - Brings voice and messaging to your web and mobile applications.
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Plivo - Plivo simplifies your customer engagement.
Sketch - Professional digital design for Mac.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Affinity Designer - Professional creative software, exclusively for Mac.