# [](https://curl.se/)
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
manpage](https://curl.se/docs/manpage.html) or [everything
curl](https://everything.curl.dev/).
Find out how to install curl by reading [the INSTALL
document](https://curl.se/docs/install.html).
libcurl is the library curl is using to do its job. It is readily available to
be used by your software. Read [the libcurl
manpage](https://curl.se/libcurl/c/libcurl.html) to learn how.
## Open Source
curl is Open Source and is distributed under an MIT-like
[license](https://curl.se/docs/copyright.html).
## Contact
Contact us on a suitable [mailing list](https://curl.se/mail/) or
use GitHub [issues](https://github.com/curl/curl/issues)/
[pull requests](https://github.com/curl/curl/pulls)/
[discussions](https://github.com/curl/curl/discussions).
All contributors to the project are listed in [the THANKS
document](https://curl.se/docs/thanks.html).
## Commercial support
For commercial support, maybe private and dedicated help with your problems or
applications using (lib)curl visit [the support page](https://curl.se/support.html).
## Website
Visit the [curl website](https://curl.se/) for the latest news and downloads.
## Source code
Download the latest source from the Git server:
git clone https://github.com/curl/curl.git
## Security problems
Report suspected security problems via [our HackerOne
page](https://hackerone.com/curl) and not in public.
## Backers
Thank you to all our backers :pray: [Become a backer](https://opencollective.com/curl#section-contribute).
## Sponsors
Support this project by becoming a [sponsor](https://curl.se/sponsors.html).