# Otalk

## What is it?
Otalk is an open source chat client powered by [XMPP](http://xmpp.org), [stanza.io](https://github.com/legastero/stanza.io), and [WebRTC](http://webrtc.org). You can think of it as an open source alternative to Skype.

While we have a version hosted at https://otalk.im, you can still run your own private instance.

## What's included?

Otalk comes with support for:

### Message History Syncing

Using Message Archive Management (MAM, [XEP-0313](http://xmpp.org/extension/xep-0313.html)), your conversations can be archived by your server and pulled down by the Otalk client on demand.

### Active Chat Syncing

Ever used multiple IM clients at once, or swapped clients, and end up with disjointed conversations? Using Message Carbons ([XEP-0280](http://xmpp.org/extensions/xep-0280.html) all of your active conversations will be synced to your Otalk client (and vice versa if you other clients support carbons too).

### Reliable Connections

Sometimes you just lose your Internet connection, but with Stream Mangagement [XEP-0198](http://xmpp.org/extensions/xep-0198.html) your current session can be instantly resumed and caught up once you regain connection. Your messages will show as gray until they've been confirmed as received by your server.

### Message Correction

Made a typo in a message? Using Message Correction [XEP-0308](http://xmpp.org/extensions/xep-0308.html) you can just double tap the up arrow to edit and send a corrected version. In other clients that support correction, your last message will be updated in place and marked as edited.

### Timezone Indications

Working with someone in a different timezone? If the other person is using Otalk or another client that supports Entity Time ([XEP-0202](http://xmpp.org/extensions/xep-0202.html)) you'll see a reminder that they're 9 hours away where it's 4am and they're not likely to respond.

### Voice and Video