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OSA is no longer accepting members. If you would like to join the OSA-OW2 merged organization, please proceed with the OW2 membership process.

OSA’s members collectively form the governing body that sets OSA’s direction and priorities, and solicits input from and drives its activities in the broader open source ecosystem. Members have voting and governance rights, as well as the responsibility to drive OSA’s day to day operations. Member organizations bring meaningful expertise and thought leadership to the table that helps advance the cause of OSA and its key activities.

Black Duck Software is the leading provider of software compliance management solutions that help companies govern how software assets are created, managed and licensed. Black Duck's offerings help businesses take maximum advantage of open source software while at the same time ensure that they satisfy the obligations associated with the code they use. Black Duck's customer base includes enterprises, product developers, outsourcers, law firms and other organizations worldwide that are concerned with protection of software intellectual property.
bluenog logoBluenog shares the OSA’s vision of open source interoperability and commercial readiness,” said Suresh Kuppusamy, CEO of Bluenog.  “The Bluenog ICE suite is an Integrated Collaborative Environment that tightly integrates content management, portal, and business intelligence software while also offering ready integration with leading commercial technologies. Our commercial product is based on open source projects, and we provide our customers with full access to the source code to further facilitate integration, choice, and flexibility.”

Chariot Solutions is a software development and consulting firm focused on helping clients achieve greater success through the intelligent application of established and emerging technologies. Emphasizing the use of agile architectures based upon open standards, we deliver solutions that allow clients to react more quickly to competitive pressures and market opportunities.

CSC is a global leader in providing technology-enabled solutions and services through three primary lines of business. These include Business Solutions & Services, Global Outsourcing Services and the North American Public Sector. CSC's advanced capabilities include systems design and integration, information technology and business process outsourcing, applications software development, Web and application hosting, mission support and management consulting. Headquartered in Falls Church, Va., CSC has approximately 92,000 employees and reported revenue of $17.1 billion for the 12 months ended Jan. 2, 2009.

Essentia LogoEssentia, the leading provider of solutions for commercial open source software communities, was founded in 2006 by experts in open source and collaborative software development who have delivered, deployed, and managed many of the most significant first-generation communities like, and Subversion. Essentia is a global company based in San Francisco, CA and Chennai, India with offices in Austin and Houston, Texas; New Jersey; London, UK; and Singapore. Essentia customers include Fortune 500 and emerging companies. More information is available at
Ingres logoIngres Corporation is a leading Business Open Source software company, created in November 2005 as part of a partnership between CA, Inc. (NYSE: CA) and Garnett & Helfrich Capital. Based on more than 25 years of technology investment, Ingres Corporation offers a product family of enterprise-class, highly scalable databases and tools that are currently being used by more than 10,000 major global customers and partners. Ingres's database technology is also embedded in a large number of major third-party software offerings including CA's primary product offerings Unicenter and eTrust. Ingres Corporation is headquartered in Redwood City, California, and has major development, sales and support centers throughout the United States, United Kingdom, Germany, France and Australia, and supports customer implementations in more than 58 countries around the world.
Iona logoIONA delivers value to its customers through its Artix and Orbix product families and the FUSE family of open source distributed SOA infrastructure software products. These products employ standards-based technology, deployed in a distributed manner, to address the enterprise SOA infrastructure software requirements of our customers.
 Jaspersoft is the market leader in open source business intelligence (BI). With more than two million downloads worldwide and more than 5,000 commercial customers in 81 countries, Jaspersoft offers the most widely used open source BI software in the world. The Jaspersoft Business Intelligence Suite is comprised of an interactive reporting server, graphical and ad hoc report design interfaces, OLAP analysis, and a Java reporting library for scalable, small, medium, and large enterprises, for use as either stand-alone or embedded BI applications. Jaspersoft is based in San Francisco and is backed by leading venture capital firms Morgenthaler Ventures, Doll Capital Management, and Partech International.
Openbravo is the leading professional web-based open source enterprise management (ERP) solution for small and midsize enterprises (SMEs). Driven by open source philosophy and best-in-class services, it delivers a fully integrated, web-based ERP system tailored to the needs of any company, regardless of size or industry sector. The functionality of Openbravo is in continual growth thanks to an expanding international community of users, partners and developers. The system is used by many companies in the distribution, services and manufacturing industries. Interested partners are provided with powerful tools and guidance to help them create and manage profitable businesses based upon Openbravo. A thriving developer community worldwide works to build Openbravo into the ideal, cost-effective professional ERP solution for SMEs. Openbravo helps companies to manage daily operations, optimize business processes, enhance customer satisfaction and ultimately increase profitability. And because it is open source, Openbravo puts the customer in full control without the overheads of contracts or licenses. In January 2006, Openbravo secured a €5 million ($6.4m) financing agreement with Sodena - record funding for an open source ERP company - to fuel further software development and international growth.
Palamida Logo
Palamida enables organizations to confidently leverage open source and third party code while maintaining software intellectual property compliance. Detailed analysis of the code base provides customers with a complete code inventory - a critical component of software development, risk mitigation and vulnerability assessment.
RB logo
Redmayne-Bentley Stockbrokers is the largest independent stock brokerage in the United Kingdom. Redmayne-Bentley Stockbrokers is a trading name of Redmayne-Bentley, a partnership that is authorized and regulated by the Financial Services Authority.
sourceforge is the world's largest Open Source software development web site, hosting more than 140,000 projects and over 1,400,000 registered users. facilitates collaborative open source development by providing services to project administrators and downloaders--including support requests, bug reporting, feature requests, forums, statistics, project news, screenshots, and mailing lists.
Talend LogoTalend is the first company to provide open source software tools for the ETL market. The company's solutions break rank with the market by supplying open, innovative and more powerful software. Talend's software is distributed under open source license. The company’s flagship product, Talend Open Studio, has been downloaded over 30,000 times in less than four months. Their objective is to reach 100,000 downloads by the end of June 2007.
TOSTA LogoThe Open Source Technology Alliance (TOSTA) is a chapter/member based Educational and Collaborative Exchange for Private and Public Sector organizations and Educational Institutions interested in furthering their knowledge and understanding of open source software. TOSTA provides Consulting, Technical Resources, Risk Management, Education and Compliance Services to organizations that currently use or plan to use open source software.

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