Freebase "is an open, Creative Commons Attribution (aka CC-BY) licensed collection of structured data," and a "platform for accessing and manipulating that data" via API. Almost 40 million entities and assertions about those entities are stored within a graph database. The database was built by pulling in open data and relies on community contribution to stay updated. Freebase is part of the semantic web and emits Linked Open Data (via RDF) for all its entities.
A global geographical database that may be used to identify and tag all references to location. The database contains over 8 million entries, each of which possesses a geographic name (in various languages), latitude, longitude, elevation, population, administrative subdivision and postal codes and information on unique features.
Users can upload photos and organize them into albums, and they can search photos that have been posted in public albums and filter the results by license (any Creative Commons license, licenses that allow commercial use, licenses that allow remixing).
Open Attribute is a suite of tools that makes it simple for anyone to copy and paste the correct attribution for any CC licensed work. These tools will query the metadata around a CC-licensed object and produce a properly formatted attribution that users can copy and paste wherever they need to.
TEI Boilerplate is a lightweight solution for publishing styled TEI (Text Encoding Initiative) P5 content directly in modern browsers. With TEI Boilerplate, TEI XML files can be served directly to the web without server-side processing or translation to HTML.
Prism is a tool for crowdsourcing interpretation. Welcome to our experiment in crowd-sourcing and visualizing many readings of a common set of texts.
This online tool can be used for a wide variety of annotation tasks, including visualization and collaboration.
brat is designed in particular for structured annotation, where the notes are not freeform text but have a fixed form that can be automatically processed and "interpreted" by a computer. brat also supports the annotation of n-ary associations that can link together any number of other annotations participating in specific roles. brat also implements a number of features relying on natural language processing techniques to support human annotation efforts.
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Augmented Notes integrates scores and audio files to produce interactive multimedia websites in which measures of the score are highlighted in time with music.
To get started making your own website, upload mp3 and ogg versions of your audio file, images of the pages of your score, and, if you have one, an MEI file containing measure boundaries, then hit submit below. Augmented Notes will help you mark the measures on the score and assign them times, and will output a zip file of everything you need to have your own website.