GPScorrect 3.40 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. The most popular versions of the program are 3.4 and 3.0. The software is included in Home & Hobby Tools.
We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The program's installer files are generally known as Activator.exe or GPScorrect.exe etc. The actual developer of the free program is Trimble Navigation Limited.
From the developer:
The Trimble® GPScorrect™ extension for Esri ArcPad software lets you take full control of your Trimble GNSS receiver, and adds the power of differential correction to ArcPad. With the GPScorrect extension and ArcPad software, it's easier than ever to bring GNSS and GIS data together. The GPScorrect extension ensures that you have the most reliable and accurate data for your GIS.
You may want to check out more software, such as Credit Card Manager, HappyCollection or Gedcom Census, which might be similar to GPScorrect.