Calctor 2.1.2.0 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. Calctor.exe is the most frequent filename for this program's installer.
The program lies within Office Tools, more precisely Calculators. This free program is an intellectual property of Tommy Carlier. The most popular versions of the Calctor are 2.1 and 1.3. We recommend checking the downloaded files with any free antivirus.
From the developer:
Calctor is an advanced calculator with a simple interface. You have an input-region where you enter your calculations, and an output-region where the results of your calculations automatically appear while you're typing. You can format the result using formatters. Also you can use commas as separators between thousands, only if you put the number between single quotes.
You may want to check out more software, such as Mark's Adding Machine or CelsiusConverter, which might be similar to Calctor.