As of April 2, 2024, Progress Software has discontinued new downloads for Telerik JustDecompile. It is no longer offered or supported as part of the Progress Developer Tools portfolio.
If you are looking for an offline installer, here are your available options based on your current status with the tool: 1. Official Offline Installer (For Existing Users)
If you previously had a Telerik account and downloaded the product, you might still find the installer in your Progress/Telerik Account under "Products & Subscriptions."
MSI/ZIP Files: Historically, Telerik provided standalone MSI or ZIP packages for offline use to avoid issues with web-based installers.
Progress Control Panel: While the Control Panel typically handles online installations, it was often used to fetch individual MSI files for manual distribution. 2. Third-Party Archives (Use Caution)
Since the official site no longer hosts the tool, you can find older versions on reputable software mirrors. Note that these are unsupported by Telerik:
FileHippo: Lists version history including 2018 and 2014 releases.
Download3K: Offers a download for version 2024.2.513.0, though the file size listed may indicate a web stub rather than a full offline installer. 3. Open Source Engine telerik justdecompile offline installer
If you need the tool for development or integration purposes, the JustDecompile Engine remains open-source:
GitHub Repository: You can access the underlying decompilation engine at the telerik-boneyard/justdecompile-engine repository.
Self-Building: This allows you to build the core functionality yourself using Visual Studio if the standalone UI is unavailable. Recommended Alternatives
Since JustDecompile is retired, you may want to consider these active, free alternatives:
dotPeek: A free .NET decompiler from JetBrains that supports offline installation.
ILSpy: A widely used open-source .NET assembly browser and decompiler.
dnSpy: Excellent for both decompilation and debugging of .NET assemblies. JustDecompile FAQ - Telerik.com As of April 2, 2024 , Progress Software
Can decompiled code be directly exported from JustDecompile? Yes. We have "Create Project" from decompiled assembly functionality. Telerik.com
Telerik JustDecompile is a free, high-performance tool used by developers to recover lost source code or browse the implementation details of .NET assemblies. While the standard installation often uses a "web installer" that downloads files during the process, an offline installer is essential for environments with restricted internet access or for archival purposes. Key Features of JustDecompile
Fast Decompilation: Quickly turns compiled .NET assemblies (DLLs and EXEs) back into readable C#, VB.NET, or IL code.
Extensibility: Supports a robust plugin system to enhance functionality, such as the Reflexil plugin for assembly editing.
Visual Studio Integration: Allows you to decompile code directly within your IDE.
Create Projects: It can create a Visual Studio project from a decompiled assembly, making it easier to manage recovered code. Getting the Offline Installer
Telerik typically bundles their free tools within the Progress Telerik platform. To obtain a standalone or offline version: Official Download: Visit the JustDecompile product page. ILSpy: An open‑source
Telerik Control Panel: If you are a Telerik customer, the most reliable way to manage offline installations is through the Progress Telerik Control Panel. It allows you to download "Offline Installers" for all your licensed and free products.
Standalone MSI: In some release cycles, Telerik provides a direct .msi or .exe package that contains all necessary components, eliminating the need for a live connection during setup. Why Use an Offline Installer?
Secure Environments: Ideal for development machines in high-security zones (air-gapped labs) where internet access is prohibited.
Deployment Efficiency: Useful for IT administrators who need to deploy the tool across multiple workstations without consuming external bandwidth for every install.
Version Control: Storing an offline installer ensures you can return to a specific version of the tool even if the official download link changes or the product is updated.
Telerik JustDecompile is a professional-grade, free tool designed to decompile compiled .NET assemblies (DLLs and EXEs) into readable C#, VB.NET, or MSIL code. While it has been a staple in the .NET ecosystem for years, it was officially retired by Progress Telerik. New official downloads are no longer available on the main Telerik product page, though users who previously downloaded it can continue to use it. Core Features JustDecompile FAQ - Telerik
While Telerik (now part of Progress) discontinued the standalone JustDecompile application in favor of integrating it into their VS extensions, the demand for the standalone tool remains high. The original offline installer is no longer hosted prominently on the main Telerik site, making installation tricky.
Here is a helpful guide on how to handle the JustDecompile offline installation.
Progress requires a free registration to download JustDecompile. This is a security measure to prevent automated bots from overwhelming their servers. If you don’t have an account, sign up—it takes 60 seconds and doesn’t require a credit card.