Black Duck Open Hub, formerly Ohloh, is a website which provides a web services suite and

online community An online community, also called an internet community or web community, is a community whose members interact with each other primarily via the Internet. Members of the community usually share common interests. For many, online communities may fe ...

platform that aims to index the

open-source software development Open-source software development (OSSD) is the process by which open-source software, or similar software whose source code is publicly available, is developed by an open-source software project. These are software products available with its sourc ...

community. It was founded by former

Microsoft Microsoft Corporation is an American multinational corporation, multinational technology company, technology corporation producing Software, computer software, consumer electronics, personal computers, and related services headquartered at th ...

managers Jason Allen and Scott Collison in 2004 and joined by the developer Robin Luckey. , the site lists 669,601 open-source projects, 681,345 source control repositories, 3,848,524 contributors and 31,688,426,179 lines of code. In 2017,

Black Duck Software Synopsys is an American electronic design automation (EDA) company that focuses on silicon design and verification, silicon intellectual property and software security and quality. Products include tools for logic synthesis and physical design ...

(the company running the site) was acquired by

Synopsys Synopsys is an American electronic design automation (EDA) company that focuses on silicon design and verification, silicon intellectual property and software security and quality. Products include tools for logic synthesis and physical desig ...

for $565 million.

History

Ohloh is a website that provides a web services suite and

platform that aims to index the

community. It was founded by former

Geeknet Geeknet, Inc. is a Fairfax County, Virginia–based company that is a subsidiary of GameStop. The company was formerly known as VA Research, VA Linux Systems, VA Software, and SourceForge, Inc. History VA Research VA Research was founded in Nov ...

, owners of the popular open-source development platform

SourceForge SourceForge is a web service that offers software consumers a centralized online location to control and manage open-source software projects and research business software. It provides source code repository hosting, bug tracking, mirrori ...

. However, Geeknet sold Ohloh to the open-source analysis company

on 5 October 2010. Black Duck integrated Ohloh's functionality with their existing products to advance the site into a major resource for FOSS development. On 18 July 2014, Ohloh became Black Duck Open Hub. In late August 2014, the Black Duck Open Hub's Organizations feature moved out of Beta and into Version 1.0.

Functionality and features

By retrieving data from revision control repositories (such as CVS, SVN,

Git Git () is a distributed version control system: tracking changes in any set of files, usually used for coordinating work among programmers collaboratively developing source code during software development. Its goals include speed, data integ ...

, Bazaar, and

Mercurial Mercurial is a distributed revision control tool for software developers. It is supported on Microsoft Windows and Unix-like systems, such as FreeBSD, macOS, and Linux. Mercurial's major design goals include high performance and scalabilit ...

), Black Duck Open Hub provides statistics about the longevity of projects, their

licenses A license (or licence) is an official permission or permit to do, use, or own something (as well as the document of that permission or permit). A license is granted by a party (licensor) to another party (licensee) as an element of an agreeme ...

(including license conflict information) and

software metric In software engineering and development, a software metric is a standard of measure of a degree to which a software system or process possesses some property. Even if a metric is not a measurement (metrics are functions, while measurements are ...

s such as

source lines of code Source lines of code (SLOC), also known as lines of code (LOC), is a software metric used to measure the size of a computer program by counting the number of lines in the text of the program's source code. SLOC is typically used to predict the am ...

and commit statistics. The ''codebase history'' informs about the amount of activity for each project. ''Software stacks'' (list of software applications used by Black Duck Open Hub's members) and ''tags'' are used to calculate the similarity between projects. ''Global statistics'' per language measure the popularity of specific

programming language A programming language is a system of notation for writing computer programs. Most programming languages are text-based formal languages, but they may also be graphical. They are a kind of computer language. The description of a programming l ...

s since the early 1990s. Those global statistics across all projects in Black Duck Open Hub have also been used to identify those with the most extensive continuous revision control histories. ''Contributor statistics'' are also available, measuring open-source developers' experience as observable in code committed to revision control repositories.

Social network A social network is a social structure made up of a set of social actors (such as individuals or organizations), sets of dyadic ties, and other social interactions between actors. The social network perspective provides a set of methods for ...

features (''kudos'') have been introduced to allow users to rank open-source contributors. A ''KudoRank'' for each user and open-source contributor on a scale of 1 to 10 is automatically extracted from all kudos in the system. The idea of measuring open-source developers' skills and productivity on the basis of commit statistics or mutual rating has received mixed reactions in technology blogs. Contributor profiles may also contain a contributor supplied email address, and avatars loaded from

Gravatar Gravatar (a portmanteau of ''globally recognized avatar'') is a service for providing globally unique avatars and was created by Tom Preston-Werner. Since 2007, it has been owned by Automattic, having integrated it into their WordPress.com bloggi ...

using that email address. On 22 August 2007, a public beta of a web-service

API An application programming interface (API) is a way for two or more computer programs to communicate with each other. It is a type of software interface, offering a service to other pieces of software. A document or standard that describes how ...

was announced, exposing Black Duck Open Hub's data and reports to promote the development of third-party applications. On 18 January 2013, the team announced a new metric, the Project Activity Indicator (PAI). The PAI combines the number of contributors and the number of commits in an algorithm that weighs more recent activity more heavily than past activity. Activity is normalized so that all projects can be considered and weighed equally one against another; that activity assessment is scaled relatively to the number of project contributors and commits. On 14 January 2014, the team announced a new score, the Project Hotness Score. The PAI shows long-term activity and growth on FOSS projects, but its requirement that there be at least a year of data means that new projects can't be ranked. The Project Hotness Score looks at activity over the past few weeks and evaluates daily activity to identify those projects. By design, the Project Hotness Score is highly volatile. On 6 April 2016, the team announced Hub 3.0, which streamlined continuous integration and DevOps processes through policy management and rapid scanning capabilities.

Code search

In 2012, Black Duck Open Hub launched Open Hub Code Search, a free code search engine based on the predecessor Koders. It could search over 21 billion lines of open-source code and filter by language, project or syntax, but was discontinued in 2016.

References

External links

* * {{GitHub, blackducksoftware, Black Duck Software Code search engines Free software websites Internet properties established in 2006 American review websites Software metrics

History

Functionality and features

Code search

See also

References

External links