A key benefit is that once a developer has loaded Mapstraction, s/he can to switch from one map API to another quickly and easily - often only needing to change a few lines of code.
Mapstraction displays points, lines, polygons and markers on the maps, and also allows developers to add base maps and overlays.
Skim is a PDF reader and note-taking software, with different colors of highlighting, annotation, sticky notes, numerous export formats and searching and filtering notes.
epub-tools is a collection of Python tools for generating and managing epub documents from Word, RTF, DocBook, TEI and FictionBook.
Pattern is a Python web mining module with tools for data retrieval (Google + Twitter + Wikipedia API, web spider, HTML DOM parser), text analysis (rule-based shallow parser, WordNet interface, syntactical + semantical n-gram search algorithm, tf-idf + cosine similarity + LSA metrics) and data visualization (graph networks).
TiddlyWiki is a reusable personal web notebook. It allows anyone to create personal hypertext documents that can be published on the Web, and also search and tag content. The developers write, "TiddlyWiki is designed to be non-linear, structuring content with stories, tags, hyperlinks, and other features. You can organise and retrieve your notes in ways that conform to your personal thought patterns, rather than feel chained to one preset organisational structure. You can use TiddlyWiki as a single file that you view and edit through any web browser, whether you are online or offline.
Protovis composes custom views of data with simple marks such as bars and dots. Unlike low-level graphics libraries that quickly become tedious for visualization, Protovis defines marks through dynamic properties that encode data, allowing inheritance, scales and layouts to simplify construction.
VIVO is an open source semantic web application originally developed and implemented at Cornell. When installed and populated with researcher interests, activities, and accomplishments, it enables the discovery of research and scholarship across disciplines at that institution and beyond. VIVO supports browsing and a search function which returns faceted results for rapid retrieval of desired information.
All Our Ideas is a research project that seeks to develop a new form of social data collection by combining the best features of quantitative and qualitative methods. Using the power of the web, we are creating a data collection tool that has the scale, speed, and quantification of a survey while still allowing for new information to "bubble up" from respondents as happens in interviews, participant observation, and focus groups.
Markdown is a text-to-HTML conversion tool for web writers. Markdown allows you to write using an easy-to-read, easy-to-write plain text format, then convert it to structurally valid XHTML (or HTML).
OpenRefine (formerly Google Refine) is a tool for cleaning messy data (e.g. fixing inconsistencies), transforming it between different formats, and exploring data.
Using Google Spreadsheets as the backend database is awesome because it is easy to use, share and collaborate with." -- website
Bokeh is a Python interactive visualization library for large datasets that natively uses the latest web technologies. Its goal is to provide elegant, concise construction of novel graphics in the style of Protovis/D3, while delivering high-performance interactivity over large data to thin clients.