Open source test automation tool for executing scenarios against web applications to validate browser compatibility and system functionality.

A Python based proxy for generating automated website tests, focussing on standard conformity and regression tests. [Open source, BSD license]

A open source tool for automated testing of web applications. It calls web pages and verifies the results, giving reports on success and failure. [BSD-like]

A testing tool for web applications. Key features include: Recording/playback of HTTP requests, XML script format, database validations, variables and variable setters, Ant tasks automate testing. [Commercial, demo versions]

Listing of web test tools and management tools - link checking, html validation, load testing, security testing, java testing, publishing control, site mapping.

Functional, regression, and load testing of web applications through a full-featured web browser.

TestAgent test helps companies during user acceptance testing (UAT) phase of their web application development cycle.

Essays on Web Site Quality, Design, and Usability

The C-written tool uses HTTP, FTP and TLS/SSL protocol stacks of libcurl and OpenSSL and simulates thousands of clients. Authentication-login, unlimited download urls and logoff are configurable. [Open source, GPL]

TracePlus/Web Detective (eBusiness Edition) is a performance analysis and diagnostic tool specifically designed for Web development. Analyze the HTTP and HTTPS protocols used by an application and view performance and diagnostic information.