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Curl (curl.exe). Curl is a command line tool for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, Gopher, HTTP, HTTPS, IMAP, IMAPS...
Curl is a versatile command-line utility designed to transfer data using URL syntax across an extensive range of protocols. Ideal for developers, sysadmins, and automation tasks, it supports DICT, FILE, FTP, FTPS, Gopher, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMTP, SMTPS, Telnet, and TFTP. Its reliability makes it a top choice for scripting, API testing, and high-performance backend operations.
With support for SSL certificates, HTTP POST and PUT, FTP uploading, proxy tunneling, cookies, authentication methods (Basic, Digest, NTLM, Negotiate, Kerberos), and file-transfer resume, Curl streamlines data movement on any system. It’s optimized for modern workflows like cloud automation, CI/CD pipelines, and secure file transport—perfect for users searching for tools like “best command line networking tool,” “secure file transfer automation,” or “developer API testing utility.”