CSipSimple - This project will allow native sip for Android devices.
It relies on the pjsip sip stack and use the pjsip-jni project.
The use of this native library will ensure a better speed, call quality and less battery consumption than equivalent pure java projects
AOSP Theme for CSipSimple - AOSP (android opensource project) theme for the CSipSimple application.
This theme is very special: it tries to get resources from the stock apps. If your ROM is one from a manufacturer that changes the opensource application this theme will not work at all.
If you are using a ROM based on the OpenSource project it will work
Freeje - it’s an application for cheap international calls from mobile phone which is great for tourists, people living abroad and people who need to call abroad
Skuku - Make and receive calls and SMS when abroad using your SIM card and cellular identity without roaming charges.
Notes:
Cannot be used for emergency calls.
Requires a Wi-Fi connection.
Using Skuku Roaming service requires root access
G1 Central is an application for Android-powered phones which allows you to place calls to any number from your GrandCentral number. It supports both Dialer mode as well as reading from your Contact list.
What's New in This Release:
· Updated icon, cleaned up a few very minor bugs
S-unno - With S-unno, you can make phone calls to any fixed or mobile number in more than 200 countries at absolutely low rates. Rates start from as low as US 2cents/minute. S-unno uses your 3G or WiFi connection to place these calls so that you can start saving now
IMSDroid is the first fully featured open source SIP/IMS client for Android. It is also the only free Android SIP client which supports direct Video Calls.
3GPP IMS (IP Multimedia Subsystem) is the next generation network for delivering IP multimedia services. IMS is standardized by the 3rd Generation Partnership Project (3GPP)
