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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Stefan Eissing a483128b01
pytest: test threaded resolver
Add `resolv-threaded` to curlinfo to detect use of the threaded resolver
correctly even with c-ares linked to https-rr.

Run test_21_05 exactly when threaded resolver is built.

Closes #21287
2026-04-11 17:31:56 +02:00
.circleci runtests: detect bad libssh differently for test 1459 (fixing CircleCI libssh job) 2025-11-16 23:28:44 +01:00
.github GHA: update dependency ruff to v0.15.10 2026-04-11 02:21:33 +02:00
CMake cmake: pre-fill HAVE_PIPE2 for two more platforms 2026-04-07 00:33:48 +02:00
docs configure: tidy up comments 2026-04-10 23:19:41 +02:00
include async-thrdd: use thread queue for resolving 2026-03-25 12:14:21 +01:00
lib getinfo: repair CURLINFO_TLS_SESSION 2026-04-11 16:56:22 +02:00
LICENSES spacecheck: check long lines and repeat spaces, fix fallouts 2026-03-25 11:02:08 +01:00
m4 configure: tidy up comments 2026-04-10 23:19:41 +02:00
projects OS400: add new definitions to the ILE/RPG binding. 2026-03-24 09:27:48 +01:00
scripts tests: make whitespace between functions and classes consistent 2026-04-08 10:28:05 -07:00
src pytest: test threaded resolver 2026-04-11 17:31:56 +02:00
tests pytest: test threaded resolver 2026-04-11 17:31:56 +02:00
.clang-tidy.yml clang-tidy: avoid assigments in if expressions 2026-04-07 16:57:46 +02:00
.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 buildconf: remove 2026-04-04 11:35:24 +02:00
.gitignore build: drop the winbuild build system 2025-09-20 01:20:25 +02:00
.mailmap tool: fix two more allocator mismatches 2026-03-30 16:17:42 +02:00
acinclude.m4 configure: tidy up comments 2026-04-10 23:19:41 +02:00
appveyor.sh cmake: drop support for CMake 3.17 and older 2026-03-21 13:24:47 +01:00
appveyor.yml cmake: drop support for CMake 3.17 and older 2026-03-21 13:24:47 +01:00
CHANGES.md CHANGES: fix typo in filename 2026-01-01 12:20:10 +01:00
CMakeLists.txt build: skip detecting pipe2() for Apple targets 2026-04-08 23:32:25 +02:00
configure.ac configure: tidy up comments 2026-04-10 23:19:41 +02:00
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 4724b8c 2026-04-07 07:50:19 +02:00
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 rtmp: drop support 2026-03-21 14:56:06 +01:00
README BUG-BOUNTY.md: we stop the bug-bounty end of Jan 2026 2026-01-26 08:26:28 +01:00
README.md rtmp: drop support 2026-03-21 14:56:06 +01:00
RELEASE-NOTES RELEASE-NOTES: fix typos [ci skip] 2026-04-10 00:10:58 +02:00
renovate.json renovate: merge two custom regex rules, escape dots 2026-01-23 15:58:16 +01:00
REUSE.toml badwords: avoid 'simply' 2026-03-10 19:34:06 +01:00
SECURITY.md stop using the word 'just' 2026-03-03 15:30:22 +01:00

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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, MQTTS, POP3, POP3S, 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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