phoneutria is a Web crawler that is multi-threaded, scalable, high performance, extensible, and polite. It can be used to crawl, index, load-test, or even download any Web or enterprise domain and is configurable through a XML configuration file. Phoneutria can be used for either checking the links of a Web site or for load-testing purposes (i.e. the level of politeness can be configured). It provides a plug-in mechanism for further extensions.