A Sharp (.NET)

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A# is a port of the Ada programming language to the Microsoft .NET platform. A# is freely distributed by the Department of Computer Science at the United States Air Force Academy as a service to the Ada community under the terms of the GNU General Public License.

AdaCore took over this development in 2007, and announced "GNAT for .NET", which is a fully supported .NET product with all of the features of A# and more.^[1] As of 2021, A# has fallen dramatically in popularity and is considered by some to be a dead language (there are no known users or implementations).^{[2][unreliable source?]}