Dinkumware is a software company specializing in core libraries for C

C (programming language)

C is a general-purpose computer programming language developed between 1969 and 1973 by Dennis Ritchie at the Bell Telephone Laboratories for use with the Unix operating system....

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The company has provided the standard library implementation that ships with Microsoft

Microsoft

Microsoft Corporation is an American public multinational corporation headquartered in Redmond, Washington, USA that develops, manufactures, licenses, and supports a wide range of products and services predominantly related to computing through its various product divisions...

  since 1996, and claims to be the leading supplier of and libraries to the embedded community.

They also provide libraries for Java

Java (programming language)

Java is a programming language originally developed by James Gosling at Sun Microsystems and released in 1995 as a core component of Sun Microsystems' Java platform. The language derives much of its syntax from C and C++ but has a simpler object model and fewer low-level facilities...

 and other tools, including "proofers" to test for library adherence to the standard.
The company is owned and operated by P. J. Plauger

P. J. Plauger

P. J. Plauger is an author and entrepreneur.He has written and co-written articles and books about programming style, software tools, and the C programming language....

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See also

• Edison Design Group
  Edison Design Group
  The Edison Design Group is a company that makes compiler frontends . Their frontends are widely used in commercially available compilers and code analysis tools. Users include the Intel C++ compiler, SGI MIPSpro, The Portland Group, and Comeau C++...
  
  , supplier of the front-end for several commercial C/C++ compilers.
• Plum Hall, certifies C/C++ compilers and standard libraries.