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Voice XML Enabling Software (VXES) is an application that connects a VoiceXML Interpreter, a telephony platform, and MRCP servers that provide services for Automatic Speech Recognition and Text to Speech Synthesis. C++, Windows & Linux OS supported
Time of day service over telephone using Voicent Gateway, a VoiceXML gateway that specially designed for voice modems. A Free version is available for download at http://www.voicent.com/download. Sample code for interactive telephony applications.
FreePhone is an easy to use IP phone application. FreePhone supports major platforms and protocols. Features include Conference calling, Voice mail and Chat rooms. A SDK is available for you to make additional features.
Isisdial Java generates standard telephone tones. After turning on your phone to get the tone you hold it up to to the speaker and the phone number will be dialled. Isisdial Java is command-line and cross-platform, with minimal requirements.
TOEJAM is a Java Answering Machine. Using a Voice Modem as the base of an IVR system, it has been running 24x7 since Nov 2001 at my home handling phone calls and emailing the results. Currently can use US Robotics 56K Pro Msg, USR Sportster may work.
JabbahVoice is an open-source framework which allows developers to easily create and extend voice portals using Asterisk (www.asterisk.org), the famous open-source IP PBX.
OpenSVMS is an open source Short Voice Messaging System. SVMS (also known as VSMS or VoiceSMS) is a telecom service which enables users to send voice clips as messages rather than plain text messages.
Chopped LIVR takes YAML input and generates Asterisk dialplans. It is primarily useful for generating IVR (Interactive Voice Response) applications; however, it may be used as a tool to generate any Asterisk dialplan.
Chooped LIVR also incorporates control structures and functionality enhancements to the base Asterisk dialplan language.