Free SMS API - Zeepmobile

SMS does have a cost and so a free SMS API that sends everywhere is impossible.

But Zeepmobile claims that. They have a catch of course.

Ads will be appended to the SMS send. To use an ad-free version, you have to subscribe to $9.95/month.

Zeepmobile is also not suitable to be used for SMS marketing. This is because to use the API, the users need to explicitly subscribe first. Developers are required to implement this subscription step.

Free Video Conferencing API

This is an awesome API provided by tokbox, aka opentok platform.

Using their API, developers are able to create free video to video conferencing. It is even used by big players such as ebuddy!

They business model is on a freemium model, which is always free for basic use. Their premium chargable services would be archiving, which is still in beta.

Free Conference API from Speek

Speek provides a simple API for doing free conferencing, that is speaking to multiple people on a line.

It is interesting that they are adopting a free model, with brief audio advertisements inserted into the call. 

A promising API provider in the voice communication space. Watch out for the monkeys!