This page tracks adoption and implementation of Structured Field Values. Please add yours below. If you don't have edit access, please ping Mark Nottingham.

Note also the test suite

• .NET
  • StructuredFieldValues
• C
  • ls-sfparser
  • ngtcp2/sfparse
• C++
  • Chrome's structured_headers.cc
• Erlang
  • Cowlib's cow_http_struct_hd
• Go
  • httpsfv
  • sfv
• Java
  • structured-fields
• JavaScript
  • structured-field-values - (online demo)
  • structured-headers
• PHP
  • gapple/structured-fields
  • bakame-php/http-structured-fields
• Python
  • http_sfv
  • http-sf
• Ruby
  • http-structured-headers
• Rust
  • sfv (Used in Firefox)
  • sfparse-rs
• Swift
  • swift-http-structured-headers