Track and Search your recent documents and folders, customizable
Recent Document Tracker Implements a similar function to Windows 7 Jumplists by tracking recent documents and folders, then by using document type icons in the taskbar tray you can pop-up a menu of recent documents sorted by last access time (like Jumplists) allowing you to quickly search for the files/folders you need. You can also pin/exclude documents as well indicate which documents are open is MS Office applications.
Xapian is a Search Engine Library, written in C++ with bindings for Perl, Python, PHP, Java, Tcl, C# and Ruby. Xapian allows you to easily add advanced indexing and search facilities to your applications. See www.xapian.org for more information.