OnTopReplica 3.5.1 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 program lies within System Utilities, more precisely System Optimization.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The actual developer of the free software is Lorenz Cuno Klopfenstein. The most popular versions of the program 3.5, 3.4 and 3.3. OnTopReplica.exe is the default file name to indicate this program's installer. You can execute OnTopReplica on Windows XP/Vista/7/8/10/11 32 and 64-bit.
From the developer:
OnTopReplica is an open source program written in C# for .NET 4.0/4.5 that makes use of the Windows Forms Aero library. The program allows you to clone any of your windows and keep it always on top while working with other windows, to select a subregion of the cloned window and auto-resize your windows.
You may want to check out more software, such as Notebook Hardware Control, RegAlyzer or Modem Booster, which might be similar to OnTopReplica.