Loudtalks (LINK: http://loudtalks.com/products_loudtalks_lite/ (http://loudtalks NULL.com/products_loudtalks_lite/)) is a free push-to-talk for Windows Mobile. It utilizes Wi-Fi or your data connection and works between mobile operators and cross borders.
Unlike some of alternatives the communication is real-time and direct (peer-to-peer). Your messages are never stored to the server. There is a free Windows PC client software too so you can talk mobile to mobile, PC to mobile or PC to PC.
Features:
- Push-to-talk
- Contact list with online status
- Voice history
- Sound notifications
- Works over Wi-Fi, 3G, EDGE or GPRS
- Compatible with Windows Mobile 5.0 / 6.0 and on the PC side Windows 2000, XP, Vista, Windows 7, and Linux using WINE