CurlPas is a FreePascal - Lazarus - Delphi - Kylix - compatible binding and object-oriented wrapper for libcurl.

Libcurl is a web-client library that can provide cross-platform Pascal applications with an easy way to implement such things as:

• Download files using FTP or HTTP.
• Upload files using FTP,  HTTP PUT and multipart/form-data (aka rfc1867).
• Perform multiple concurrent transfers using the curl_multi interface.
• Resume partial file transfers.
• Timeout settings for connect, minimum transfer speed, and total download time.
• Username:password authentication to remote and/or proxy servers.
• SSL/TLS connections using the OpenSSL or GnuTLS libraries.
• Retrieve resource information such as HTTP HEAD or FTP LIST.
• Send and receive cookies ( from a NS cookie file, or input/output strings ).
• Send "spoofed" headers such as User-Agent and Referer.
• Set additional custom HTTP headers as required.
• Support for remote FTP commands like MKDIR, DEL, and CHMOD.
• Generate "human-readable" error output and/or logs on failed transfers.
• And much more...

Documentation

All details on CurlPas is found on the CurlPas web page: curlpas.sourceforge.net.

Examples
A simple http download program...

  program simple;
  {$APPTYPE CONSOLE}
  uses curlobj;
  var 
    Curl: TCurl;
  begin
    Curl := TCurl.Create(nil);
    Curl.URL := 'http://curl.haxx.se/';
    Curl.OutputFile := 'curl.html';
    if not Curl.Perform then
      WriteLn(Curl.ErrorString);
    Curl.Free;
  end.

Binding documentation
Documentation for the component wrapper can be found in the source package,
and on the CurlPas website.

The core pascal bindings are quite similar to their C-language equivalents,
read the libcurl documentation for information, in particular:

• man libcurl
  
• man curl_easy_setopt
  
• man curl_easy_getinfo
  

Credits
Written by Jeffrey Pohlmeyer.

What is Pascal?
You'll find more info Free Pascal here: http://www.freepascal.org.