Did you just run into a download or a file on your computer that has a digital signature from AB Software Consulting Ltd? If so, please read on.
You will typically notice AB Software Consulting Ltd when double-clicking to run the file. The publisher name is displayed as the "Verified publisher" in the UAC dialog as the screenshot shows:

You can also view the AB Software Consulting Ltd certificate with the following procedure:
Here's a screenshot of a file that has been digitally signed by AB Software Consulting Ltd:

As you can see in the screenshot above, Windows states that "This digital signature is OK". This implies that the file has been published by AB Software Consulting Ltd and that the file has not been tampered with.
If you click the View Certificate button shown in the screengrab above, you can see all the details of the certificate, such as when it was issued, who issued the certificate, how long it is valid, and so on. You can also see the address for AB Software Consulting Ltd, such as the street name, city and country.
Thawte Code Signing CA - G2 has issued the AB Software Consulting Ltd certificates. You can also examine the details of the issuer by clicking the View Certificate button shown in the screengrab above.
The following are the AB Software Consulting Ltd files I've gathered, thanks to the FreeFixer users.
| Detection Ratio | File Name |
|---|---|
| 0/43 | ABTLSP64.DLL |
The detection percentage is based on the fact that I've collected 43 scan results for the AB Software Consulting Ltd files. 0 of these scan results came up with some sort of detection. If you like, you can review the full details of the scan reports by examining the files listed above.
The analysis is based on certificates with the following serial numbers: