Clang

1. Clang documentation

   Index of the Clang documentation.

2. Users manual

   Options, diagnostics and compatibility.

3. Command line reference

   Complete listing of Clang flags.

4. Language extensions

   __builtin functions, blocks and availability attributes.

5. Attribute reference

   Clang attributes by category with semantics.

6. Diagnostics reference

   -W warning flags and their descriptions.

7. ClangFormat

   .clang-format styles and options.

8. Clang-Tidy

   Static analysis checks and the .clang-tidy configuration.

9. LibTooling

   Writing standalone tools with the Clang AST and compilation databases.

10. Modules

    Clang modules, module maps and precompiled modules.

11. Static analyzer

    Path-sensitive checkers and scan-build.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.