GrandCentral To (Finally) Launch As Google Voice. It’s Very, Very Good.
http://www.techcrunch.com/2009/03/11/grand-central-to-finally-launch-as-google-voice-its-very-very-good/

Other than a few good natured jabs at their marketing gimmicks and coverage of outages, that is.

Tropo is cloud-based telephony. Using our simple API you can quickly create and deploy powerful telephony applications in Groovy, JavaScript, PHP, Python, and Ruby. Tropo is powered by Voxeo - the largest and most reliable hosted telephony platform in the world.

What is Tropo.com? Tropo is cloud-based telephony. Using our simple API you can quickly create and deploy powerful telephony applications in Groovy, JavaScript, PHP, Python, and Ruby. Tropo is powered by Voxeo - the largest and most reliable hosted telephony platform in the world. Tropo is currently in BETA and will always be absolutely free for development use. After the BETA, production use will start at $0.03 per minute. If you encounter any problems whatsoever during testing, please contact us via the help menu above. Thanks and happy Tropoing! Sample Code Here's a simple JavaScript example that shows you how to, well, you know. answer(); say("Hello, world!"); hangup(); The following JavaScript example demonstrates how to ask a caller for input: answer(); result = ask("For sales, press 1. For support, press 2.", {choices:"1, 2", repeat:3}); if (result.name == 'choice') { if (result.value == "1") say("sales is not available right now."); if (result.value == "2")

The ofono project provides an infrastructure for building GSM/UMTS telephony applications. It includes a high-level D-Bus API for use by telephony applications of any license.

Ring2Skype for Skype is FREE. "Skype In" charges you for the service. Another difference is that Ring2Skype for Skype provides numbers in more than 40 countries, while "Skype In" only in 20.

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Can record call history when calling a 1800 number

Deep Dialing: Tired of pressing 1 for this and 2 for that? We've mapped out the phone menus for hundreds of companies. Find the spot you need to call, then click, and we'll automatically connect you.

connect more quickly to customer service reps and record the conversation

Cloudvox is the most practical, stable, open environment for API-driven phone calls.

Cloudvox is the most practical, stable, open environment for API-driven phone calls. Full control, open architecture, killer docs—the things we all want as developers and entrepreneurs.

free calls

OpenVBX allows developers to build voice and SMS applications for business, such as toll free phone numbers, call forwarding, voicemail, visual voicemail, voicemail transcriptions, and auto-attendants. It's like Google Voice, but open source and for business.

: the Web-based, Open Source Phone System for Business

IVR for incoming and outgoing calls.

Drag and drop voice apps. Why write pages of code when you can drag and drop your way to a full featured IVR application? Design and build your application naturally and intuitively with QuickFuse. You'll have a working prototype in minutes. Need to greet the caller? Drop in a simple prompt. Need to get an ID number? Drop in a digits input. Then connect it all together. It's fast and easy.

CTI/電話/応答、←Pipes、フロー

It basically takes the web mashup power of Yahoo Pipes and applies it to telephone calls. It makes building voice applications easy: you ydrag modules to the canvas, wire nodes to receptors, and then click Run to try out what you've built. You can share apps with other users, search from a library of templates, and deploy apps to phone numbers from a complete management interface. The Simple Database panel allows you to upload and download tables of data that your apps can access and modify. With Quickfuse you can build virtual receptionist, notification systems, order-taking hotlines, automated surveys, account management, timecard systems.

http://news.ycombinator.com/item?id=1514895