Open source .NET is less special and more welcoming

The Microsoft "toolchain" (the CLR, the .NET framework libraries, and the C# compiler) were special. They were Microsoft's property, guarded jealously and subject to Microsoft's whims. They were also the premiere platform and tools for development in Windows and for Windows. If you were serious about application development (for Windows), you used the Microsoft tools.

There were other toolchains. The Java set includes the JVM and the Java compiler. The major scripting languages (Perl, Python, Ruby, and PHP) each have their own runtime engines and class libraries. None were considered special in the way that the Microsoft toolchain was special. (The other toolchains were -- and still are -- considered good, and some people considered them superior to the Microsoft toolchain, but even most non-Microsoft fans would admit that the Microsoft toolchain was of high quality.)

Microsoft's announcement to open the .NET framework and the C# compiler changes that status. Microsoft wants to expand .NET to the Linux and MacOS platforms. They want to expand their community of developers. All reasonable goals; Microsoft clearly sees opportunities beyond the Windows platform.

What interests me is my reaction to the announcement. For me, opening the .NET framework and moving it to other platforms reduces the "specialness" of .NET. The Microsoft toolchain becomes just another toolchain. It is no longer the acknowledged leader for development on Windows.

The demotion of the Microsoft toolchain is accompanied by a promotion of the Java toolchain. Before, the Microsoft toolchain was the "proper" way to develop applications for Windows. Now, it is merely one way. Before, the Java toolchain was the "rebel" way to develop applications for Windows. Now, it is on par with the Microsoft toolchain.

I feel more comfortable developing a Java application to run on Windows. I also feel comfortable developing an application in .NET to run on Windows or Linux. (Yes, I know that the Linux version of .NET is not quite ready. But I'm comfortable with the idea.)

I think other folks will be comfortable with the idea. Comfortable enough to start experimenting with the .NET framework as people have experimented with the Java toolchain. Folks have created new languages to run under the JVM. (Clojure, Scala, and Groovy are popular ones, and there are lots of obscure ones.) I suspect that people avoided experimenting with the Microsoft toolchain because they feared changes or repercussions from Microsoft. Perhaps we will see experiments with the CLR and the .NET framework. (Perhaps new versions of the IronPython and IronRuby projects, too.)

By opening their toolchain, Microsoft has made it more accessible, technically and psychologically. They have reduced the barriers to innovation. I'm looking forward to the results.