Download of TAPI4CTI 1.0 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. Commonly, this program's installer has the following filename: TAPI4CTI.exe. We recommend checking the downloaded files with any free antivirus. The most popular version among the software users is 1.0. The software relates to Communication Tools. This free software was originally created by Microsoft.
From the developer:
A simple TAPI-based .NET windows application providing Call Id functionality for use in CTI projects. The software makes the incoming call number available in an XML file for 3rd party applications.
TAPI4CTI is a light, simple client which does just this. It watches the registered address line and logs the calls coming in to a file.
You may want to check out more software, such as MSN Messenger Khalid Edition, South Park Theme Pack for Messenger or Mnemic Emoticon Packs for Messenger, which might be related to TAPI4CTI.