Alternatives and similar repositories for wg21:

Users that are interested in wg21 are comparing it to the libraries listed below

• tahonermann / text_view-range-v3
  A C++11 character encoding and code point enumeration library based on range-v3
  ☆20Updated 6 years ago
• potswa / cxx_function
  Prototype for new std::function features, compatible with C++11.
  ☆46Updated 4 years ago
• andyprowl / virtual-concepts
  A research project aimed at introducing language support for type erasure in C++.
  ☆53Updated 8 years ago
• sargarass / isc
  Support for С++20 std::stop_token to interrupt the blocking Linux syscalls without throwing any exception.
  ☆19Updated 4 years ago
• badair / polyvar
  polymorphism with value semantics (based on std::variant)
  ☆12Updated 8 years ago
• bruxisma / papers
  WG21 Proposals and Drafts
  ☆14Updated 3 years ago
• mpark / format
  Compile-time Checked, Type-Safe Formatting in C++14
  ☆36Updated 7 years ago
• zajo / boost-noexcept
  ☆26Updated 7 years ago
• boostorg / variant2
  A never-valueless, strong guarantee implementation of std::variant
  ☆67Updated last month
• soasis / out_ptr
  Repository for a C++11 implementation of std::out_ptr (p1132), as a standalone library!
  ☆74Updated last year
• Manu343726 / elfspy
  C++ Testing using spies and fakes for isolation and simulation
  ☆10Updated 5 years ago
• iodcpp / metamap
  C++17 immutable compile-time key value map
  ☆50Updated 5 years ago
• alf-p-steinbach / Wrapped-stdlib
  The C++ standard library with fixes, including Windows UTF-8 console i/o
  ☆13Updated 6 years ago
• zamazan4ik / constexpr_allocator
  Proposal for constexpr_allocator
  ☆13Updated 7 years ago
• DaemonSnake / unconstexpr
  a c++ header library that implements variant constexpr functions and types.
  ☆83Updated 5 years ago
• greg7mdp / sho
  Small Hash Optimization - an optimization for when you have many small hash maps - similar to LLVM's small vector optimization.
  ☆39Updated 7 years ago
• martinmoene / observer-ptr-lite
  observer-ptr - An observer_ptr for C++98 and later in a single-file header-only library (Extensions for Library Fundamentals, v2, v3)
  ☆36Updated 8 months ago
• Remotion / fmt_extension
  {fmt} support for ranges, containers and types with tuple interface.
  ☆27Updated 6 years ago
• mattcalabrese / argot
  A C++ library that simplifies working with tuples, variants, and more through argument list generation and the ability to convert from ru…
  ☆61Updated 4 years ago
• cor3ntin / ext-unicode-db
  ☆16Updated last year
• iodcpp / symbol
  Foundations of symbol based programming
  ☆30Updated 5 years ago
• bruxisma / retain-ptr
  WG21 P0468 implementation of an intrusive smart pointer for C++
  ☆57Updated 5 years ago
• uyha / flag
  C++20 for flag enums
  ☆27Updated 4 years ago
• Quuxplusone / ring_view
  std::ring_span (SG14, P0059R1)
  ☆45Updated 8 years ago
• atomgalaxy / liberasure
  A no-dependencies C++ extensible type erasure library
  ☆43Updated 4 years ago
• ned14 / status-code
  Proposed SG14 status_code for the C++ standard
  ☆68Updated 2 months ago
• vittorioromeo / orizzonte
  WIP
  ☆26Updated 5 years ago
• jamboree / CxxFunctionBenchmark
  benchmark for various C++ function implementations; focus on invocation time
  ☆95Updated 6 years ago
• cor3ntin / corio
  ☆15Updated 5 years ago
• executors / futures
  A proposal for a futures programming model for ISO C++
  ☆22Updated 6 years ago