Reproducible curl binaries for Linux, macOS and Windows

• We
  plan to stop
  building and distributing 32-bit Windows binaries on 2025-Aug-20.
  Custom 32-bit builds remain available with a deprecated,
  community-supported status. We recommend migrating to 64-bit Intel
  or ARM binaries.
• Download our
  .tar.xz or .zip packages,PGP signed with:
  BDCF 067D 3908 B272 7A4A 9487 67C1 0037 40BF 8DC2
• Standalone curl tool and libcurl DLL. Static libraries included.
• Required: Windows Vista with
  Universal CRT
  (x64, ARM64 or x86), macOS 10.9 Mavericks (Intel or ARM),
  any Linux (amd64, arm64, RISC-V 64) with
  MUSL builds.
• HTTP/3,
  HTTP/2 support,
  and more.
• ARM64 Windows builds are
  Control Flow Guard
  enabled. Intel builds have
  CET
  enabled. All builds have frame pointers enabled.
• Transparent builds, using open source code, run in
  public,
  with auditable logs.
• LLVM/Clang build environment with
  mingw-w64 via
  Debian,
  Homebrew,
  MSYS2.
  llvm-mingw for ARM64.
• Windows cross-built and published via
  AppVeyor CI. Linux built via GHA.
  Using reproducible OS image
  debian:testing-slim
  via Docker. macOS built via GHA.
• Linux and macOS builds are not official curl builds.
• We verify components using SHA-256, and PGP where provided.
• We build reproducible binaries,
  producing the same hash given the same input sources and C compiler.
• Patching policy: No local patches. We may apply patches if already merged
  upstream or — for showstoppers — had them submitted with fair
  confidence of getting merged.
• You can look up our package hashes in lines starting with SHA in the
  build log.
• Packages built across host platforms do not have identical hashes due to
  slightly different build options and toolchain builds/versions. Except
  llvm-mingw builds, which are reproducible across platforms. ARM64 and
  BoringSSL builds are such by default.
• We code-sign with a self-signed certificate on Windows, and avoid trusted
  timestamps for reproducibility.

Features

Uses LibreSSL TLS backend.

Windows:
Protocols: dict file ftp ftps gopher gophers http https imap imaps ipfs ipns ldap ldaps mqtt pop3 pop3s rtsp scp sftp smb smbs smtp smtps telnet tftp ws wss
Features: alt-svc AsynchDNS brotli CAcert HSTS HTTP2 HTTP3 HTTPS-proxy IDN IPv6 Kerberos Largefile libz NTLM PSL SPNEGO SSL SSPI threadsafe UnixSockets zstd

macOS:
Protocols: dict file ftp ftps gopher gophers http https imap imaps ipfs ipns ldap ldaps mqtt pop3 pop3s rtsp scp sftp smb smbs smtp smtps telnet tftp ws wss
Features: alt-svc AsynchDNS brotli CAcert HSTS HTTP2 HTTP3 HTTPS-proxy IDN IPv6          Largefile libz NTLM PSL        SSL      threadsafe UnixSockets zstd

Linux:
Protocols: dict file ftp ftps gopher gophers http https imap imaps ipfs ipns            mqtt pop3 pop3s rtsp scp sftp smb smbs smtp smtps telnet tftp ws wss
Features: alt-svc AsynchDNS brotli CAcert HSTS HTTP2 HTTP3 HTTPS-proxy     IPv6          Largefile libz NTLM PSL        SSL      threadsafe UnixSockets zstd

"noh3", HTTP/2:
Protocols: dict file ftp ftps gopher gophers http https imap imaps ipfs ipns ldap ldaps mqtt pop3 pop3s rtsp scp sftp smb smbs smtp smtps telnet tftp ws wss
Features: alt-svc AsynchDNS brotli CAcert HSTS HTTP2       HTTPS-proxy IDN IPv6 Kerberos Largefile libz NTLM PSL SPNEGO SSL SSPI threadsafe UnixSockets zstd

"mini", without brotli and zstd, with OS TLS backend (Schannel, SecureTransport) if available:
Protocols: dict file ftp ftps gopher gophers http https imap imaps ipfs ipns ldap ldaps mqtt pop3 pop3s rtsp scp sftp smb smbs smtp smtps telnet tftp ws wss
Features: alt-svc AsynchDNS        CAcert HSTS HTTP2       HTTPS-proxy IDN IPv6 Kerberos Largefile libz NTLM PSL SPNEGO SSL SSPI threadsafe UnixSockets

"micro", without libssh2:
Protocols: dict file ftp ftps gopher gophers http https imap imaps ipfs ipns ldap ldaps mqtt pop3 pop3s rtsp          smb smbs smtp smtps telnet tftp ws wss
Features: alt-svc AsynchDNS        CAcert HSTS HTTP2       HTTPS-proxy IDN IPv6 Kerberos Largefile libz NTLM PSL SPNEGO SSL SSPI threadsafe UnixSockets

"nano", HTTP/1.1:
Protocols: dict file ftp ftps gopher gophers http https imap imaps ipfs ipns ldap ldaps mqtt pop3 pop3s rtsp          smb smbs smtp smtps telnet tftp ws wss
Features:         AsynchDNS        CAcert HSTS             HTTPS-proxy IDN IPv6 Kerberos Largefile libz NTLM PSL SPNEGO SSL SSPI threadsafe UnixSockets

"pico", HTTP/1.1-only:
Protocols:                                   http https
Features:         AsynchDNS        CAcert HSTS             HTTPS-proxy     IPv6          Largefile libz      PSL        SSL      threadsafe

Downloads

• Latest version for Windows:
  https://curl.se/windows/
• Specific versions for Windows, back to 8.2.0:
  https://curl.se/windows/dl-<curl-version>_<build-1-to-N>/curl-<curl-version>_<build-1-to-N>-{win64,win64a,win32}-mingw.zip
  Example:
  https://curl.se/windows/dl-8.2.0_1/curl-8.2.0_1-win64-mingw.zip

Build logs

https://ci.appveyor.com/project/curlorg/curl-for-win/history

Unstable/development daily builds

https://github.com/curl/curl-for-win/actions/workflows/daily.yml

Guarantees and Liability

See LICENSE.

Information in this document is subject to change without notice and does not represent or imply any future commitment by the participants of the project.

This document © Viktor Szakats, CC BY-SA 4.0