A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features
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Viktor Szakats ab8ccaed24
GHA/linux: move mbedTLS and wolfSSL valgrind jobs to arm64
For significantly better performance.

AM wolfssl-opensslextra valgrind 1:  6m53s -> 4m15s
AM wolfssl-opensslextra valgrind 2:  6m47s -> 4m25s
CM mbedtls gss valgrind 1:           8m33s -> 4m31s
CM mbedtls gss valgrind 2:           8m39s -> 4m34s
('after' times corrected for 'install prereq' differences)

before: https://github.com/curl/curl/actions/runs/21255607562
after: https://github.com/curl/curl/actions/runs/21257368016

Also tried rustls, but that'd require linux arm64 release binaries at:
https://github.com/rustls/rustls-ffi/releases

Closes #20392
2026-01-22 18:27:51 +01:00
.circleci runtests: detect bad libssh differently for test 1459 (fixing CircleCI libssh job) 2025-11-16 23:28:44 +01:00
.github GHA/linux: move mbedTLS and wolfSSL valgrind jobs to arm64 2026-01-22 18:27:51 +01:00
CMake cmake: always define CURL::win32_winsock on Windows in curl-config.cmake 2026-01-22 17:10:48 +01:00
docs cmake: add CURL_DROP_UNUSED option to reduce binary sizes 2026-01-22 17:08:20 +01:00
include build: merge TrackMemory (CURLDEBUG) into debug-enabled option 2026-01-19 18:43:17 +01:00
lib socketpair: set SO_NOSIGPIPE where possible 2026-01-22 17:18:16 +01:00
LICENSES krb5: drop support for Kerberos FTP 2025-09-20 23:58:28 +02:00
m4 build: drop global suppression of -Wformat-nonliteral, fix fallouts 2026-01-20 12:38:02 +01:00
projects tidy-up: miscellaneous 2026-01-20 12:37:56 +01:00
scripts build: update to not need _CRT_NONSTDC_NO_DEPRECATE with MSVC 2026-01-20 23:19:54 +01:00
src cmake: add CURL_DROP_UNUSED option to reduce binary sizes 2026-01-22 17:08:20 +01:00
tests build: fully omit verbose strings and code when disabled 2026-01-21 13:18:35 +01:00
.dir-locals.el copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
.editorconfig .editorconfig: add 2025-09-02 08:36:40 +02:00
.git-blame-ignore-revs copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
.gitattributes winbuild: MS-DOS batch tidy-ups 2024-07-02 19:26:15 +02:00
.gitignore build: drop the winbuild build system 2025-09-20 01:20:25 +02:00
.mailmap REUSE: add copyright header to two files 2025-11-03 16:08:52 +01:00
acinclude.m4 windows: add build option to use the native CA store 2026-01-17 19:18:52 +01:00
appveyor.sh cmake: add CURL_DROP_UNUSED option to reduce binary sizes 2026-01-22 17:08:20 +01:00
appveyor.yml appveyor: simplify job configuration 2026-01-21 19:34:12 +01:00
buildconf copyright: update all copyright lines and remove year ranges 2023-01-03 09:19:21 +01:00
CHANGES.md CHANGES: fix typo in filename 2026-01-01 12:20:10 +01:00
CMakeLists.txt cmake: add CURL_DROP_UNUSED option to reduce binary sizes 2026-01-22 17:08:20 +01:00
configure.ac tidy-up: miscellaneous 2026-01-20 12:37:56 +01:00
COPYING COPYING: bump copyright year range to 1996 - 2026 2026-01-08 23:19:44 +01:00
curl-config.in autotools: tidy-up if expressions 2025-12-10 22:29:19 +01:00
Dockerfile Dockerfile: update debian:bookworm-slim Docker digest to d5d3f9c 2025-12-31 12:22:53 +01:00
GIT-INFO.md REUSE: add copyright header to two files 2025-11-03 16:08:52 +01:00
libcurl.pc.in configure: do not echo most inherited LDFLAGS to config files 2024-11-14 09:55:45 +01:00
Makefile.am tidy-up: miscellaneous 2026-01-15 13:06:13 +01:00
README FAQ/TODO/KNOWN_BUGS: convert to markdown 2025-12-09 10:52:56 +01:00
README.md tidy-up: URLs 2025-12-09 00:19:10 +01:00
RELEASE-NOTES RELEASE-NOTES: synced 2026-01-20 16:01:16 +01:00
renovate.json renovate: try to disable GitHub Actions updates differently 2025-12-14 09:17:08 +01:00
REUSE.toml REUSE: drop broken reference to MAIL-ETIQUETTE 2026-01-19 07:48:15 +01:00
SECURITY.md docs: Clarify OpenSSF Best Practices vs Scorecard 2024-08-22 11:50:20 +02:00

curl logo

curl is a command-line tool for transferring data from or to a server using URLs. It supports these protocols: DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS.

Learn how to use curl by reading the man page or everything curl.

Find out how to install curl by reading the INSTALL document.

libcurl is the library curl is using to do its job. It is readily available to be used by your software. Read the libcurl man page to learn how.

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curl is Open Source and is distributed under an MIT-like license.

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