Felix IDE is a retail personal search spider sold by The Pentone Group, Inc. It supports the proprietary exclusion "Frequency: ??????????" in the robots.txt file. Question marks represent an integer indicating number of milliseconds to delay between document requests. This is called VDRF(tm) or Variable Document Retrieval Frequency. Note that users can re-define the useragent name.
FetchRover fetches Web Pages. It is an automated page-fetching engine. FetchRover can be used stand-alone or as the front-end to a full-featured Spider. Its database can use any ODBC compliant database server, including Microsoft Access, Oracle, Sybase SQL Server, FoxPro, etc.
Fiddler is a HTTP Debugging Proxy which logs all HTTP traffic between your computer and the Internet. Fiddler allows you to inspect all HTTP Traffic, set breakpoints, and "fiddle" with incoming or outgoing data. Fiddler includes a powerful event-based scripting subsystem, and can be extended using any .NET language.
