sharkdp/fd A simple, fast and user-friendly alternative to ‘find’
ruben2020/codequery A code-understanding, code-browsing or code-search tool.
MaskRay/ccls. C/C++/ObjC language server supporting cross references, hierarchies, completion and semantic highlighting
cquery-project / cquery . C/C++ language server supporting multi-million line code base, powered by libclang. Emacs, Vim, VSCode, and others with language server protocol support. Cross references, completion, diagnostics, …