Call411
Call411 is a free and simple to use Call Display application. It features automatic caller's number and name identification, customizable ringtones, and speech call announce with talking Caller ID. Call411 has a built-in phone book and call-back feature. ... Call Display is a telephone company service. ... The information includes the time and date of the call, the telephone number of the caller, and, in some areas, a subscription name. ... The Call Display information is supplied by the telephone company between the first and second ring as a series of special codes.
http://www.soft411.com/files/call411.exe - 536Kb - Download - Screenshot

AccuBell Talking Caller ID
Free 15 Days Trial. AccuBell Talking Caller ID announces the incoming phone call with caller number and identification of local or long distance call. Pop-up window shows callers Name, Number, Date and Time before you answer. Date and Time have region and country choices. ... Call Forwarding feature let you take all incoming call to your Mobile phone during Internet session or when outside home. ... Instantly Zap any unwanted incoming call. ... Ability to save the unwanted callers in a Block List and automatically hang up when any such call arrives.
http://www.accubell.com/Download/Accsetup.exe - 2Mb - Download - Screenshot

Gizmo Project
Gizmo Project is a free Internet phone for your computer that lets users make crystal-clear free calls using the Internet. As easy to use as instant messaging, calls offer crystal-clear voice quality and PC-to-PC calls are always free. Calls to ordinary landlines and mobile phones are available... Gizmo Project users enjoy high-end features as customizable, free voicemail which is conveniently sent to you via email, free conference calling, free call forwarding, complete call history, free access to millions of people on SIP-based networks, built-in instant messaging (IM) capabilities,...
http://www.gizmoproject.com/GizmoDownload/WinGizmoInstall.exe - 10Mb - Download - Screenshot

fonXL Call Display Screen Saver
The fonXL Call Display Screen Saver turns your computer into a Call Display unit using your computer? s modem. This fully functional, easy-to-use software combines an elegant translucent design with powerful Call Display technology. The screen saver logs incoming calls while you? ... Find who was calling by using free Reverse Lookup service, which retrieves the information about your callers from the online Yellow Pages. ... Never miss your call again! ... Customize its look with your favorite background image, or use WebShots wallpaper.
http://www.fonxl.com/download/fonxl.exe - 308Kb - Download - Screenshot

VOIP Call Shop Billing Software
Using our Call Shop Billing system you can even grant customers with credit by taking payment before even they make a call. So with us you will have two options either to bill your customers after the completion of call (Post Paid Billing) or accept payment before they make a call and a lot them... The principle of operation of the call shop billing system is when the caller approaches front desk for making the calls based on deposit, they will be assigned a booth which is free with a token Number.
http://AdvancedVoIP.com/demo/AdvancedVoIPBillingSystem.exe - 55b - Download

3CX VOIP Phone for Windows
Free VOIP / SIP phone. Use your PC as a phone. Works with any SIP / VOIP provider/ phone service. Use instead of the soft phone provided by your VOIP provider which locks you into their VOIP phone service. Easy to use interface includes dial pad and buttons to transfer or forward a call. ... Features include * Integrated phone book (allows you to assign caller ID to a name) * Supports several SIP profiles * Displays caller ID * Individual ring tones (per caller) * Drag & drop handling * Call log * Incoming calls: identify, accept, reject or ignore * Record phone calls * Multiple calls...
http://www.3cx.com/VOIP/3CXPhone.exe - 1Mb - Download - Screenshot

PhoneTray Free
PhoneTray is an easy to use FREE Caller ID software. It shows and speaks the callers name and number before you answer the phone. You can set a different ringtone for each caller or type of callers - select from 20 included ringtones or use any wav file. ... The program can play Federal do-not-call warning forcing telemarketers to remove you from their calling lists - by law! ... ) by answering and playing selected message. ... Several messages are included or you can use wav file of your choice.
http://traysoft.cachefly.net/PhoneTrayFree.exe - 1Mb - Download - Screenshot

PC-Telephone
Make FREE pc-to-pc, pc-pc and cheap pc-to-phone, pc-phone, pc-to-fax, pc-fax, phone-to-pc, phone-pc, fax-to-pc, fax-pc calls over Internet/VoIP or ISDN/PSTN telephone networks. Use your computer as internet telephone, USB phone, USB handset, ISDN telephone, ISDN fax, answer phone, fax software,... Works with all Firewalls, NAT and LAN routers - nothing to configure.
http://www.pc-telephone.com/download/pc-telephone.exe - 1Mb - Download - Screenshot

VSoft3
The VSoft Phone is a simple to use internet telephone system that can reduce your call costs. It uses the latest technology to let you make calls to friends, family, and business associates anywhere in the world without any chunky telephone equipment. ... VSoft features includes unlimited free VoIP to VoIP call (PC to PC), free video call, low cost VoIP to home/mobile call, send SMS, confrence, SMS to call, VoIP bridge. ... It is free to download and easy to install. ... Put simply, it turns your PC into a telephone.
http://www.mobif.com.my/Download/VSoft3.3-setup.exe - 4Mb - Download - Screenshot

vPhonesoft
vPhone is a feature-rich VoIP Internet-Phone software. vPhone customers can download for FREE and talk to each other by voice or video calls, including multi-participant conference calls, send SMS, MMS messages from vPhone to vPhone and from vPhone to any e-mail, completely free! ... Additional features of vPhone allow our customers calling regular and cellular phones worldwide at great rates, sending SMS messages to cellular phones, a built-in answering machine with Web access, and all these exciting features: Voice call PC to PC, Voice call - PC to regular phones, Voice conference - 1+4...
http://www.virtualiphone.com/vPhoneSetup.php - 3b - Download - Screenshot