romenskiy2012/curl: 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

romenskiy2012/curl

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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

c client curl ftp gopher hacktoberfest http https imaps ldap libcurl library mqtt pop3 scp sftp transfer-data transferring-data user-agent websocket

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Daniel Stenberg b7c9229cc6 CURLINFO_CONTENT_LENGTH_UPLOAD_T.md: expand Fixes #21953 Reported-by: BazaarAcc32 on github Closes #21956		2026-06-11 10:11:50 +02:00
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.github	GHA: update awslabs/aws-lc from v1.73.0 to v5.0.0	2026-06-10 13:38:42 +02:00
CMake	build: enable `-Wformat-signedness`, fix issues found	2026-06-10 15:14:08 +02:00
docs	CURLINFO_CONTENT_LENGTH_UPLOAD_T.md: expand	2026-06-11 10:11:50 +02:00
include	tidy-up: miscellaneous	2026-06-09 11:07:55 +02:00
lib	multi: remove a stale comment	2026-06-11 10:11:15 +02:00
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m4	tidy-up: drop stray comparisons with literal zero	2026-06-10 15:15:54 +02:00
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scripts	tidy-up: miscellaneous	2026-06-09 11:07:55 +02:00
src	tidy-up: drop stray comparisons with literal zero	2026-06-10 15:15:54 +02:00
tests	cf-socket: make Curl_addr2string static	2026-06-11 08:15:31 +02:00
.clang-tidy.yml
.dir-locals.el
.editorconfig
.git-blame-ignore-revs
.gitattributes
.gitignore
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acinclude.m4
appveyor.sh	appveyor: bump 3 VS2022 jobs to VS2026	2026-06-09 21:16:54 +02:00
appveyor.yml	appveyor: bump 3 VS2022 jobs to VS2026	2026-06-09 21:16:54 +02:00
CHANGES.md
CMakeLists.txt
configure.ac
COPYING
curl-config.in
Dockerfile
GIT-INFO.md
libcurl.pc.in
Makefile.am
README
README.md
RELEASE-NOTES	RELEASE-NOTES: synced	2026-06-09 16:58:21 +02:00
renovate.json
REUSE.toml
SECURITY.md

README.md

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.

Open Source

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

Contact

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

Commercial support

For commercial support, maybe private and dedicated help with your problems or applications using (lib)curl visit the support page.

Website

Visit the curl website for the latest news and downloads.

Source code

Download the latest source from the Git server:

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

Security problems

Report suspected security problems privately and not in public.

Backers

Thank you to all our backers 🙏 Become a backer.