有源码，类似Indy，最新8.0版本，支持到XE8，包括40多个组件，支持FTP,HTTP,WebDAV,SMTP,POP,IMAP,NNTP,MIME,SOAP,SSL-With source code, similar to Indy, the latest 8 release, support to XE8, including more than 40 components, support FTP, HTTP, WebDAV, SMTP, IMAP, NNTP, MIME, SOAP,