The decompilation engine is open-source and available on GitHub . Installing in an Offline Network If you have the .msi file:
Are you looking to add specific (like Reflexil) to your offline setup? Share public link
Most .NET libraries (Newtonsoft.Json, Entity Framework, etc.) have permissive licenses allowing decompilation for debugging. However, commercial obfuscated software is off-limits. Telerik’s own UI libraries are obfuscated; JustDecompile will show you IL but not clean C#.
You can find the source code for the decompilation engine in the telerik/justdecompile-engine repository. This allows developers to integrate the engine into their own projects. 4. Tips for Safe Acquisition telerik justdecompile offline installer link
If you are searching for an old version (e.g., from archive sites), ensure you:
If you need to install the tool on multiple machines, downloading a single large file once is faster than running a web stub on every station.
The offline installer (often a .zip or standalone .msi ) was preferred for several reasons: The decompilation engine is open-source and available on
If you are looking for the , seeking to understand the current availability of the software, or looking for alternatives, this comprehensive guide has you covered. The Status of Telerik JustDecompile
| Tool | Offline Installer | Free | Key Feature | |------|------------------|------|--------------| | | Yes (portable ZIP) | Yes | Debugger + decompiler | | ILSpy | Yes (GitHub releases) | Yes | Open-source, lightweight | | JetBrains dotPeek | Yes (MSI via JetBrains site) | Yes | Navigation + assembly explorer |
Freeware (Proprietary), actively maintained but installation method changed. Developer: Progress Software (formerly Telerik) However, commercial obfuscated software is off-limits
ILSpy is the open-source base for the decompilation engine used in many modern development tools. It is lightweight, fast, and completely free. It supports the latest .NET versions, making it a great lightweight replacement for JustDecompile.
Once you have used your offline installer to get the tool running, here is what you can do with it: