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 2b0d8dcc16
GHA: switch 12 Linux jobs to arm64
More cost-effective and seems as fast or faster than Intel.

In particular, valgrind seems to be almost 2x fast. So fast the job pair
could fit under 10 minutes if merged again (but would be the longest in
GHA/Linux.)

Installing packages is slightly slower. The package repo is Ubuntu's
which is slower than the Azure mirror used on Intel (unless Azure is
broken, which happened a lot last year).

To add to more jobs, the locally built deps also need to be migrated.

Also:
- add workaround for failing sshd server on Linux arm runners, caused by
  world-writable `HOME` directory.

Closes #20231
2026-01-09 19:35:16 +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: switch 12 Linux jobs to arm64 2026-01-09 19:35:16 +01:00
CMake cmake: silence useless compiler warnings triggered by the FASTBuild generator 2026-01-09 17:05:16 +01:00
docs docs: explicitly call out Slowloris as not a security flaw 2026-01-08 10:19:16 +01:00
include RELEASE-NOTES: synced 2026-01-09 07:54:36 +01:00
lib build: detect and include inttypes.h again (revert) 2026-01-09 14:59:30 +01:00
LICENSES krb5: drop support for Kerberos FTP 2025-09-20 23:58:28 +02:00
m4 openssl: drop includes unused or duplicate 2025-12-20 13:51:05 +01:00
packages os400sys: replace strcpy() with memcpy() 2025-12-24 23:53:40 +01:00
plan9 tidy-up: LibreSSL Git repository URLs and local CI builds 2025-10-01 12:55:20 +02:00
projects localtime: detect thread-safe alternatives and use them 2025-12-16 14:30:06 +01:00
scripts wcurl: import v2026.01.05 2026-01-06 10:12:31 +01:00
src curl: limit Windows-specific code to Windows builds, other tidy-ups 2026-01-09 09:42:01 +01:00
tests pytest: bump quiche version check update 2026-01-09 15:47:27 +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 tidy-up: miscellaneous 2025-12-18 21:27:58 +01:00
appveyor.sh tidy-up: miscellaneous 2025-12-04 20:14:11 +01:00
appveyor.yml appveyor: add support for using custom CMake versions 2025-11-28 00:51:08 +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 build: detect and include inttypes.h again (revert) 2026-01-09 14:59:30 +01:00
configure.ac localtime: detect thread-safe alternatives and use them 2025-12-16 14:30:06 +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 cmake: match filename suffixes with file content 2025-12-20 11:34:27 +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 2026-01-09 07:54:36 +01:00
renovate.json renovate: try to disable GitHub Actions updates differently 2025-12-14 09:17:08 +01:00
REUSE.toml FAQ/TODO/KNOWN_BUGS: convert to markdown 2025-12-09 10:52:56 +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.

Open Source

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

Contact

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All contributors to the project are listed in the THANKS document.

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git clone https://github.com/curl/curl

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