httpcurl - A command line tool and library for transferring data with URL syntax, supporting HTTP, HTTPS, FTP, FTPS, GOPHER, TFTP, SCP, SFTP, SMB, TELNET, DICT, LDAP, LDAPS, FILE, IMAP, SMTP, POP3, RTSP and RTMP
zipLibarchive - C library and command-line tools for reading and writing tar, cpio, zip, ISO, and other
secure-messagingThemis - Crypto library for storage and messaging for ObjC, Android, C++, JS, Python, Ruby and PHP