C is a standardized language, meaning that there is a document that defines the language: <a href="https://www.open-std.org/jtc1/sc22/wg14/" rel="nofollow">https://www.open-std.org/jtc1/sc22/wg14/</a><p>This means that there is not a single implementation that defines the language, but rather an agreed upon document that any conforming C compiler must implement to be a C compiler.<p>There are some open source C compilers such as the GNU C compiler in the GNU Compiler Collection (<a href="https://github.com/gcc-mirror/gcc">https://github.com/gcc-mirror/gcc</a>) and Clang in the LLVM project (<a href="https://clang.llvm.org/get_started.html" rel="nofollow">https://clang.llvm.org/get_started.html</a>).<p>There are also proprietary C compilers such as the Microsoft's C compiler (<a href="https://visualstudio.microsoft.com/vs/features/cplusplus/" rel="nofollow">https://visualstudio.microsoft.com/vs/features/cplusplus/</a>) and the Intel C compiler (<a href="https://www.intel.com/content/www/us/en/developer/tools/oneapi/dpc-compiler.html" rel="nofollow">https://www.intel.com/content/www/us/en/developer/tools/onea...</a>).<p>There are many others: <a href="https://en.m.wikipedia.org/wiki/List_of_compilers#C_compilers" rel="nofollow">https://en.m.wikipedia.org/wiki/List_of_compilers#C_compiler...</a><p>Most mature C compilers will specify what version(s) of the C standard they implement so developer users can know what features are available. Many C compilers also implement non-standard extensions to the C language and libraries to be more competitive, overcome language shortcomings, or provide for specialized needs or development targets (e.g. features for embedded targets).
No.<p>C is a language defined by standard, not by implementation. The ANSI C standard is defined by American National Standards Institute (ANSI).<p>Short list of the lasted C17 standard conformant compilers from the top of my head: Clang, GCC, Microsoft , EAR, AMD, Intel, ..
> Is C maintained like other languages<p>Yes. Like, for example, JavaScript, Scheme, Fortran and Common Lisp, it is a specification for a programming language that is maintained by a committee/working group<p>> with public repo, releases and issues?<p>No. Not being a language implementation, there are no releases other than the standards.<p>Issues and prereleases typically are discussed by the committee, with some results and progress (including some drafts of new versions) getting published before release. see t<a href="https://www.open-std.org/jtc1/sc22/wg14/" rel="nofollow">https://www.open-std.org/jtc1/sc22/wg14/</a>