Free voice over software for mac

Voice Chatter is a free, cross-platform voice communication (chat) application. It was designed with gaming in mind, but can be used for many other purposes.
Now you can have the best voice quality available on your platform of choice.
Voice Chatter uses UDP for communication for the fastest possible communication. This is why Voice Chatter is capable of providing such low latency for voice communication.It also makes the network code a lot simpler and more efficient.
If someone is dropping a lot of voice packets, they are simply dropped rather than guaranteed to be played at some later time. This also means that there are no more "recaps" of conversations long over like in other voice communication software.
NOTE: Voice Chatter is still under heavy development, but the feature set is large enough to be useful in the general case.

Main features:
- Talk with friends, family, or teammates over a fast and clear connection
- Ability to use text chat for anyone without a microphone
- Support for all 3 major platforms
- Admin features including kick/ban and move clients
- Saved server list for easily managing any servers that you use
- Password protected servers and channels
- Nested channels
- Codec quality/bandwidth usage control
- Support for ALSA, Windows MME, DirectSound, and CoreAudio
- Voice activated transmission
- User comments
- Text to speech and/or audio file event notifications
- Automatic microphone volume normalization

Enhancements
- Fixed a bug in sending chat messages that would prepend an extra character
- Added ability to specify a specific network interface for the server to bind to (IPv4 only)
- Added ability to specify where the server will write its log file
- Added task bar icon functionality and the ability to minimize to the taskbar (windows/linux only)
- Fixed a crash when disconnecting a remote admin connection soon after sending a command
- Added a native input manager for mac, which should substantially improve input latency
- Note: If you happen to experience a crash on startup with the mac port of this version, try opening ~/.voicechatter/vchat.conf and set "Use Native Input Manager" to "false". If you run into this issue, please post on the forums to let me know.

Bing Bonzer 1.4 is an easy to use, high performance application which can provide you with an advanced, yet easy to use, voice mail application with features not found anywhere else for the Macintosh.

With your Macintosh, your voice capable modem, a phone line with three-way calling, and Bonzer, you can have an advanced telephony system for your home or small business. Bonzer's powerful features can keep you in direct contact with your callers (personal or business) day and night, anywhere you happen to be. And that's not all. Bonzer is easy to use. It has been developed to operate with little need to refer to the user manual.

OpalVOIP is a C++ multi-platform, multi-protocol library for Fax, Video and Voice over IP and other networks.
Opal runs on Mac OS X, Linux, Windows, Solaris, xBSD and Windows Mobile.
NOTE: OpalVOIP is licensed and distributed under the terms of the Mozilla Public License 1.0 (MPL).

Main features:
- Low latency RTP stack designed specifically for real-time multimedia
- Full featured H.323, SIP and IAX2 protocol stacks
- Audio codecs including G.711, GSM06.10, Speex and iLBC.
- Video codecs including H.261 and H.263
- Run-time loadable codec interface for proprietary or codecs such as G.729, H.263, H.264 and MPEG4
- Completely Open Source using the commercially friendly MPL 1.1 license

System requirements:
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- PTlib

Enhancements
- Fixed race condition in silence insertion algorithm where silence buffer is zero length before the first packet is received. Some downstream channels cant handle this. Now initialise silence buffer to be at a minimum 10 milliseconds.
- Fixed compile without video
- Backport of 22121 from trunk Reintroduce implicit check for NULL buffer accidentally removed in revision 22089
- Fixed empty Alert-Info field being sent in SIP INVITE.
- Fixed display name member of OpalConnection containing ONLY the display name for SIP.
- Fixed call routing issue in simpleopal
- IF we use string options to override the username (Calling-Party-Number) then we override it, no ifs buts or maybes!
- Fixed incorrect detection of remote SIP client putting local side on hold, thanks hongxing.
- Fixed incorrect trace log messages.
- Fixed fax NSE tone detect of CNG/CED being passed up to connection and application, for some reason commented out! Fixed OpenPhone detection that fax mode is already in use when get a CNG/CED indication.
- Fixed switching media format for existing channel, e.g. T.38 mode, was broken by someone.
- Slight change to routing algorithm so if the B-Party is explicitly determined, even when there is no matching "source" route in the table.

X-Lite 4.0 Beta is a helpful premium SIP softphone with many PBX-like features. Open standards-based design allows for maximum network interoperation and integration. VoIP networks are expanding at a blistering pace, X-Lite is ready.

CounterPath's X-Lite is the market's leading free SIP based softphone available for download. Combining voice and video calls, Instant Messaging and presence management in an intuitive and familiar interface, X-Lite helps you seamlessly transition from a traditional hard phone environment into the world of Voice over IP.

If you are already a VoIP or Broadband service subscriber (i.e. you receive VoIP service from your local Service Provider or local IP-PBX), X-Lite 3.0 lets you make audio calls to any softphone, mobile or landline number, and make video calls and send IMs to any softphone which supports these functions.

Major Features:

1. Open Standards based next generation telephony client
2. Session Initiated Protocol (SIP) based signaling for all interactive media sessions
3. Enhanced Quality of Service (QoS) for voice & video calls
4. Comprehensive Personal Address Book, including detailed calls lists and history
5. Zero-Touch Configuration of your audio or video devices
6. Microsoft Outlook integration allowing users to import their address book into their eyeBeam contact list
7. IM and Presence Management
8. Multi-party and ad hoc Voice and Video Conferencing [IP & PSTN]
9. Voice & Video Call Recording
10. Detachable & Sliding Drawers for quick Video and Contact information
11. Toast pop-ups allowing the management of incoming calls
12. Intuitive user interface makes it easy for both novice and power users to make and receive calls, initiate video conferencing, and communicate using Instant Messaging.
13. A comprehensive personal address book empowers users to create, manage, and personalize their contacts and their presence with online communities.
14. Rich feature suite bestows users with a confluence of standard telephony features, advanced network and voice media features, including support for multiple USB headset devices.

Requirements:

• Processor: Intel Pentium III 700 MHz or equivalent
• Memory: 256 MB RAM
• Hard Disk Space : 30 MB
• Operating System
• • Windows 2000
  • Windows XP
  • Windows Vista
  • Mac OS X 10.4
• Connection: IP network connection (broadband, LAN, wireless)
• Sound Adapter: Full-duplex, 16-bit
• Windows Operating Systems: 32-bit processors only