The Cacheability Engine will check a URL you feed it for several things that will affect a Web cache, including web server clock skew, expires and Cache-Control headers, Last-Modified date presence, validation of LM date, Content-Length presence and more. It makes it easy to see how a cache will treat your content. There are also public engines running, so you don't have to install the software to use it for Internet-available sites.
Grail is an extensible Internet browser written entirely in the interpreted object-oriented programming language Python. It runs on Unix, and, to some extent, on Windows and Macintosh. Grail is easily extended to support other new protocols or file formats. Grail is distributed in source form, free of change, without warranties. It requires recent versions of Python and Tcl/Tk to run.
httpMonitor is a Python program which lets you monitor the HTTP traffic between a browser and a Web server. You configure your browser to use httpMonitor as its proxy to ensure that all HTTP traffic between browser and server goes via httpMonitor. In a XML-configuration file you can specify a Python-function as processor for the HTTP-messages you are interested in (requests or responses, which match certain criteria). You may have as many processors as you want, without modifying the actual program. The only thing you need to do is configure the httpMonitor and write your processors.
With LinkChecker, you can check HTML documents and Web sites for broken links. It features recursion, robots.txt exclusion protocol support, HTTP proxy support, i18n support, multithreading, regular expression filtering rules for links, and user/password checking for authorized pages. Output can be colored or normal text, HTML, SQL, CSV, or a sitemap graph in DOT, GML, or XML format. Supported link types are HTTP/1.1 and 1.0, HTTPS, FTP, mailto:, news:, nntp:, Telnet, and local files.
MapIt! is a simple Web-mapping application implemented in Python that lets you navigate raster maps through your Web browser. It lets you zoom in and out, and select objects and object classes that are highlighted on the map. MapIt! can be integrated with an existing Web server in several ways: as a CGI script, Fast-CGI, or in Apache with mod_python. It can also serve GIS results over the Web.