• Parses form data, correcting for defective and/or inconsistent browsers • Transparently accepts both GET and POST form data • Accepts uploaded files as well as regular form fields • Provides functions to set and retrieve "cookies" (browser-side persistent information) • Handles line breaks in form fields in a consistent manner • Provides string, integer, floating-point, and single- and multiple-choice functions to retrieve form data • Provides bounds checking for numeric fields • Loads CGI environment variables into C strings which are always non-null • Provides a way to capture CGI situations for replay in a debugging environment, including file uploads and cookies

• gorilla/context stores global request variables. • gorilla/mux is a powerful URL router and dispatcher. • gorilla/reverse produces reversible regular expressions for regexp-based muxes. • gorilla/rpc implements RPC over HTTP with codec for JSON-RPC. • gorilla/schema converts form values to a struct. • gorilla/securecookie encodes and decodes authenticated and optionally encrypted cookie values. • gorilla/sessions saves cookie and filesystem sessions and allows custom session backends. • gorilla/websocket implements the WebSocket protocol defined in RFC 6455.