ReSharper 2020.2.4 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 following versions: 2020.2, 2020.1 and 2019.3 are the most frequently downloaded ones by the program users.
The actual developer of the software is JetBrains. 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 belongs to Development Tools.
From the developer:
ReSharper extends the functionality of Visual Studio IDE with code analysis, error checking, and formatting. It comes with over 2200 on-the-fly code inspections for C#, VB.NET, ASP.NET, JavaScript, TypeScript and other technologies. For most inspections, ReSharper provides quick-fixes (light bulbs) to improve the code.
You may want to check out more software, such as R# Settings Manager for R#5.1, CleanProject or Visual Assist, which might be related to ReSharper.