WebMock allows stubbing HTTP requests and setting expectations on HTTP requests.

Record your test suite's HTTP interactions and replay them during future test runs for fast, deterministic, accurate tests.

The jQuery Mockjax Plugin provides a simple and extremely flexible interface for mocking or simulating ajax requests and responses

FakeWeb is a helper for faking web requests in Ruby. It works at a global level, without modifying code or writing extensive stubs.

Replaces Net::HTTP with a subclass that routes all requests to a Rack application

Real stubs and spies for HTTP(S) services

Record network responses for easy stubbing of external calls

A webmock DSL using sinatra.

Stub HTTP responses

FakerMaker is a simple factory builder so you can throw away your fixtures and generate test data instead.

Ruby gem for using jquery mockjax within rspec examples

API for Testing Rack Applications via Mock HTTP