Telerik JustDecompile was a free, high-performance .NET assembly browsing and decompilation tool. However, it is important to note that Telerik JustDecompile is now retired and discontinued as of April 2, 2024. No new official downloads or product support are available from Progress Telerik. Options for Offline Installation
For users specifically seeking an offline installer, there were historically two main ways to obtain JustDecompile for use without an active internet connection:
MSI Installer: Previously available through a Telerik account, this standalone installer allowed for a complete installation without an internet connection during the setup process.
ZIP File Distribution: JustDecompile was also distributed as a simple ZIP archive. This "portable" version could be placed on a USB drive or server and run without a formal installation process. Where to Find It Now
Since official downloads are no longer offered on the JustDecompile homepage, you may need to look for archived versions if you do not already have the installer: telerik justdecompile offline installer best
Archive Sites: Repositories like FileHippo or Download3K still host older versions of the installer (e.g., version 2014.1.225.0 or 2018.x).
Existing Users: If you have previously downloaded the tool, you can continue to use it indefinitely, as there are no "time bombs" in the software. Key Features for Offline Work
If you manage to secure an offline version, it offers several features ideal for isolated environments:
Standalone Operation: It does not require Visual Studio to function. Telerik JustDecompile was a free, high-performance
Fast Performance: It was marketed as being 10x faster than leading competitors at decompiling .NET framework assemblies.
Visual Studio Project Creation: You can export decompiled code directly into a C# project.
Resource Extraction: Users can save resources (like icons or images) from assemblies by right-clicking them. Recommended Free Alternatives
Because JustDecompile is no longer updated to support the latest modern .NET versions, Telerik officially recommends the following free alternatives: ILSpy: An open-source .NET assembly browser and decompiler. The Catch: The built-in Plugin Manager usually requires
dotPeek: A free standalone tool from JetBrains that can also decompile assemblies into Visual Studio projects. JustDecompile FAQ - Telerik.com
One of JustDecompile’s strongest features is its plugin ecosystem (e.g., plugins for identifying patterns or searching).
C:\Users\[User]\AppData\Local\JustDecompile\PluginsJustDecompile is a free, powerful .NET decompiler that allows you to recover high-level source code (C#, VB.NET, IL, etc.) from compiled assemblies (DLLs and EXEs). Its key features include: