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Digital Mars is a small American software company owned by Walter Bright that makes C, C++ and D compilers, and associated utilities such as an integrated development environment (IDE) for Windows and DOS, which Digital Mars terms an integrated development and debugging environment (IDDE). They also distribute the compilers for free on their web site.
Over time, the names of these products have changed. The C compiler was first named Datalight C compiler, then Zorland C, then Zortech C, and now Digital Mars C/C++ compiler. The C++ compiler was first named Zortech C++ (the first commercial C++ compiler for Windows), then Symantec C++, and now Digital Mars C++ (DMC++).
The company has gained notice in the software development community for the programming language D which they developed in-house.