List of SIMILE projects  The following is a list of SIMILE projects. The SIMILE tools assist in the storage, querying, transformation and mapping of very large collections of RDF data. The tools developed within SIMILE are meant to allow people who are not Semantic Web developers to create ontologies which describe their specialized metadata, create RDF and convert other types of metadata into RDF. These open source tools are designed to be scalable and provide for cross-community sharing of metadata at low cost. Longwell is a faceted browser which enables the user to visualize and browse any RDF data set, allowing the user to quickly build a user-friendly web site out of the RDF data without requiring the user to write any RDF code. Facets are metadata fields considered important for a given data set. In its default configuration, the collection of facets is returned along the right-hand side of the page, and clicking on any facet causes the refinement of facets in relation to the data retrieved. Longwell then displays only the subset of the data which meet those restrictions. This appears on the left-hand side of the page. Previously selected restrictions can be removed, which causes a broadening of the subset of items displayed. Piggy Bank is a Firefox extension which enables the user to collect information from the Web, save it for future use, tag it with keywords, search and browse information collected, retrieve saved information, share collected information and install screen scrapers. Piggy Bank gathers RDF data where it is available, and where it is not available, it generates it from HTML by using screen scrapers. This incremental approach to the realization of the Semantic Web vision allows the user to save and tag information gathered from web pages without having to cut, paste and label the various products of their browsing. By clicking on the keyword they have used to tag particular types of item, the user can view all of those items together within her browser, without having to open other applications. Users can also deposit saved data in the Semantic Bank, where other users can browse it and add their own contributions. This pooling of keywords underlies services such as Flickr and del.icio.us, where communities can collaborate to build a taxonomy for shared data. These taxonomies, which emerge as information is accumulated, are known as folksonomies. Solvent is a Firefox extension that enables the user to write screen scrapers for Piggy Bank. Gadget is an XML inspector which enables the user to condense large amounts of well-formed XML data.