Free IMS Clients

• IMSDroid, for Android
• iDoubs, for iOS (iPhone, iPad and iPod Touch)
• The UCT IMS Client is available under the GPL (open source)
• The IMS Communicator is available under the GPL (open source)
• FOKUS' OpenIC (Open IMS Client) is available only commercially. Yet, there is also a free binary OpenIC_Lite version available right here