org.apache.commons.httpclient
Interfaces 
Credentials
HttpConnectionManager
HttpMethod
MethodRetryHandler
Classes 
ChunkedInputStream
ChunkedOutputStream
ConnectMethod
ContentLengthInputStream
Cookie
DefaultMethodRetryHandler
Header
HeaderElement
HeaderGroup
HostConfiguration
HttpClient
HttpConnection
HttpConstants
HttpMethodBase
HttpParser
HttpState
HttpStatus
HttpsURL
HttpURL
HttpVersion
MultiThreadedHttpConnectionManager
NameValuePair
NTCredentials
ProxyClient
ProxyClient.ConnectResponse
SimpleHttpConnectionManager
StatusLine
URI
URI.LocaleToCharsetMap
UsernamePasswordCredentials
Exceptions 
ConnectTimeoutException
HttpException
HttpRecoverableException
HttpTimeoutException
IOTimeoutException
ProtocolException
RedirectException
URI.DefaultCharsetChanged
URIException
Errors 
HttpClientError