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Telerik Promises a Free .NET Decompiler Forever

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Telerik, a company making .NET and Agile development tools, has announced that JustDecompile, a code browsing and decompiling tool, will be made available for free, forever.

.NET Reflector, a well-known decompiling tool for .NET assemblies, was once free but RedGate decided to charge money for it earlier this year because “owning Reflector doesn’t make commercial sense”, according Simon Galbraith, co-founder of RedGate. The tool comes now in three versions, the cheapest one being Standard ($35), a standalone Windows application offering browsing, analyzing and decompiling .NET code to C#, VB.NET or IL. The free version has a time bomb set to go off on May 31, 2011.

Perhaps as a reaction to RedGate’s decision, Telerik promises “Free Decompiling. Forever.” Telerik sells JustCode, a code analysis Visual Studio productivity add-in, and one of its features is to decompile .NET assemblies. Now, the company has decided to make that feature available in a free stand-alone Windows tool, called JustDecompile, for those interested in decompiling code. JustDecompile can be used to analyze entire types of the assemblies loaded or external assemblies referenced. The tool can decompile lambda expressions, generics, yield statements, and auto-generated properties.

Currently in beta, the version 1.0 of the tool will be released in the summer of this year. In the meantime, developers are invited to test it and submit bugs, and to suggest new features. The most voted features desired so far are: “Allow assembly editing”, “Create project in Visual Studio from assembly”, a feature that Telerik says it will be included in v. 1.0, “Support Silverlight XAP decompiling”, and “Add an API for plugins”. The company also promises JustDecompile will be “updated frequently during the BETA, and will receive 3 major updates per year” in the future, plus support via the forums.

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Community comments

  • This is interesting..

    by Roopesh Shenoy /

    Your message is awaiting moderation. Thank you for participating in the discussion.

    Especially as you mentioned, in light of RedGate's view. Especially creating project in Visual Studio from an Assembly. Wonder if this is a loss-leader strategy.

  • Open source alternative : ILSpy

    by Merouane Atig /

    Your message is awaiting moderation. Thank you for participating in the discussion.

    The SharpDevelop team is also working on an open source alternative to .NET Reflector. You can have more information on their wiki page wiki.sharpdevelop.net/ilspy.ashx.

  • And additionally...

    by Francois Ward /

    Your message is awaiting moderation. Thank you for participating in the discussion.

    On top of all that, Resharper is supposed to add decompilation in the next version. Considering how many people use Resharper...

  • Why not just open source it?

    by Roopesh Shenoy /

    Your message is awaiting moderation. Thank you for participating in the discussion.

    Why not just have one open source decompiler? Does not make sense everyone working on their own version, especially if they are giving it away free anyways.

    Hackers should never have to solve the same problem twice.

  • Re: Open source alternative : ILSpy

    by 段 永明 /

    Your message is awaiting moderation. Thank you for participating in the discussion.

    Already using ILSpy from it's start, although it's still need more improvement

  • Re: And additionally...

    by José Joye /

    Your message is awaiting moderation. Thank you for participating in the discussion.

    A free Decompiler is already available from JetBrains. See at www.jetbrains.com/decompiler/index.html?topDP

  • Reflector 6 is now free forever

    by Matthieu DUFOURNEAUD-RAVEL /

    Your message is awaiting moderation. Thank you for participating in the discussion.

    Redgate has backtracked, and Reflector 6 is now free forever.
    More infos: eon.businesswire.com/news/eon/20110426007021/en...

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