There are 9 repositories under single-file topic.
Static reflection for enums (to string, from string, iteration) for modern C++, work with any enum type without any macro or boilerplate code
Fast & memory efficient hashtable based on robin hood hashing for C++11/14/17/20
Header-only TOML config file parser and serializer for C++17.
A dependency free, embeddable debugger for Lua in a single file (.lua or .c)
gb single-file public domain libraries for C & C++
span lite - A C++20-like span for C++98, C++11 and later in a single-file header-only library
CLI tool for saving a faithful copy of a complete web page in a single HTML file (based on SingleFile)
string_view lite - A C++17-like string_view for C++98, C++11 and later in a single-file header-only library
optional lite - A C++17-like optional, a nullable object for C++98, C++11 and later in a single-file header-only library
A modern, C++11-native, single-file header-only, tiny framework for unit-tests, TDD and BDD (includes C++98 variant)
expected lite - Expected objects in C++11 and later in a single-file header-only library
Native ApprovalTests for C++ on Linux, Mac and Windows
variant lite - A C++17-like variant, a type-safe union for C++98, C++11 and later in a single-file header-only library
Highly Flexible Lovelace Card - arbitrary contents/columns/rows, regex matched, perfect to show appdaemon created content and anything breaking out of the entity_id + attributes concept
A single header standard C++ serialization framework.
A modern C++ scope guard that is easy to use but hard to misuse.
ring-span lite - A C++yy-like ring_span type for C++98, C++11 and later in a single-file header-only library
Scope Guard & Defer C++