Don't waste time hunting for an "official" JustDecompile offline installer — it doesn't exist for any recent version. The best decompiler with a true offline installer today is ILSpy. It's what most .NET developers switched to after Telerik abandoned JustDecompile.
If you have a specific need for JustDecompile (like a plugin that only works with it), grab the v1.5.0.510 from a trusted archive site, but understand the risks and limitations.
JustDecompile caches assemblies to speed up loading. Point the cache to an SSD or RAM disk:
Telerik JustDecompile is a free, fast .NET decompiler that specializes in converting compiled assemblies (DLLs or EXEs) into readable C#, VB.NET, or IL code. While highly regarded for its speed and "Create Project" feature, the official product has been retired by Progress Software as of April 2, 2024. Top Offline Installer Options telerik justdecompile offline installer best
Because the official web installer is no longer supported, users seeking the best offline experience should look for the following:
Official Telerik Account (Recommended): If you previously had a Telerik account, you can often still access the MSI installer or ZIP file under your "Trials" or "Downloads" section for the last stable version (2024.1.131.0).
ZIP File Distribution: This is essentially a "portable" version. You can put the files on a USB drive to use without a full installation process on different machines. Don't waste time hunting for an "official" JustDecompile
Telerik Offline Trial Page: You can check the Offline Trial Download page, which Telerik provides for users with connectivity issues to download MSI packages.
Alternative Repositories: Sites like FileHippo host older versions (e.g., 2019.1.116.1) as standalone installers if the official portal is inaccessible. Key Features & Performance Review JustDecompile FAQ - Telerik
While Telerik (now part of Progress Software) offers the tool for free, their default distribution method is often a small web launcher. This stub downloads the necessary files at runtime. While efficient for occasional users, this presents three specific problems: JustDecompile caches assemblies to speed up loading
JustDecompile 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:
In the world of .NET development, few tools are as universally essential as a reliable decompiler. Whether you need to debug a third-party library, recover lost source code, or peek under the hood of an unfamiliar assembly, Telerik JustDecompile has long been a gold standard.
While many developers instinctively grab the web installer, seasoned professionals know that the Telerik JustDecompile Offline Installer is the superior choice. This article explores why the offline version is the "best" method for installation, how to get it, and the unique advantages it brings to your workflow.