Bitbucket is a free hosting site for open-source computer program source code. Bitbucket supports version control, offsite backup, and access by multiple authenticated users.
CrowdLabs is a system that supports community sharing, visualization and analysis of workflows using a philosophy employed by social web sites.
CrowdLabs features the ability to interact with the workflows through a Web browser. Workflow provenance is captured allowing scientists to publish their process as well as their results. For the latter, CrowdLabs generates links to the process that can be embedded in Wiki and HTML pages, as well as LaTeX documents.
Kepler is a scientific workflow application that enables scientists, engineers, analysts, and computer programmers to create, execute, and share models and analyses. Kepler is a java-based application that can operate on data stored in a variety of formats, locally and over the internet, and is an effective environment for integrating disparate software components, such as merging "R" scripts with compiled "C" code, or facilitating remote, distributed execution of models.
Pegasus encompases a set of technologies that help workflow-based applications execute in a number of different environments including desktops, campus clusters, grids, and now clouds. Scientific workflows allow users to easily express multi-step computations, for example retrieve data from a database, reformat the data, and run an analysis.
Taverna is an open source family of tools for designing and executing workflows, created by the myGrid project. Written in Java, the family consists of the Taverna Engine (the workhorse), and the Taverna Workbench (desktop client) and Taverna Server (remote workflow execution server) that sit on top of the Engine.
VisTrails is an open-source scientific workflow and provenance management system developed at the University of Utah that provides support for data exploration and visualization. Whereas workflows have been traditionally used to automate repetitive tasks, for applications that are exploratory in nature, such as simulations, data analysis and visualization, very little is repeated---change is the norm.