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
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
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
jPhoneLite is a SIP VoIP SoftPhone for Android.
Supports: g711, RFC 2833, 6 lines w/ conference, hold, and transfer.
Conference Mode: Set for each line.
Ringtone: /sdcard/ringtone.wav (8000Hz, 16bit, mono)
What's New in This Release:
· Major overhaul of Settings screens.
· Long press DIAL and BACKSPACE to redial and clear dial
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
