The Apache Software Foundation
The mission of the ASF is to provide software for the common good. All Apache products are available to the public-at-large completely free of charge. Established in 1999, the all-volunteer Foundation oversees more than 350 leading Open Source projects, including Apache HTTP Server (the world's most popular Web server software) and dozens of innovations in the Apache Incubator. Through the ASF's meritocratic process known as "The Apache Way," more than 620 individual Members and 6,000 Committers successfully collaborate to develop freely available enterprise-grade software, benefiting billions of users worldwide: hundreds of thousands of software solutions are distributed under the Apache License; and the community actively participates in ASF mailing lists, mentoring initiatives, and ApacheCon, the Foundation's official user conference, trainings, and expo. As a United States private, 501(c)(3) not-for-profit charitable organization, the ASF is funded through tax-deductible contributions from corporations, foundations, and private individuals. Their collective contributions offset day-to-day operating expenses such as bandwidth and connectivity, servers and hardware, legal and accounting services, brand management and public relations, general office expenditures, and support staff. Approximately 75% of the ASF's US$1.2M annual budget is dedicated to running critical infrastructure support services. The ASF Infrastructure team of 10 rotating volunteers and 7 paid staff distributed on 4 continents keep Apache services running 24x7x365 at near 100% uptime on an annual budget of less than US$5,000 per project. Donations to the ASF help underwrite the world's largest Open Source foundation and enrich the lives of countless users and developers across the globe. Employers with matching gift programs are invited to include the ASF as part of their philanthropic programs to generously increase donations to the ASF to support its mission. For more information, visit http://www.apache.org/ and https://twitter.com/TheASF
Software In The Public Interest Inc
Software in the Public Interest is a non-profit organization which was founded to help organizations develop and distribute open hardware and software. Our mission is to help genuine, substantial, and significant free and open source software projects by handling their non-technical administrative tasks so that they aren't required to operate their own legal entity.
The FreeBSD Foundation
The FreeBSD Foundation is a 501(c)(3), US based, non-profit organization dedicated to supporting, promoting, and building the FreeBSD Project and community worldwide. The Foundation gratefully accepts donations from individuals and businesses, using them to fund and manage projects, sponsor FreeBSD events, Developer Summits and provide travel grants to FreeBSD developers. In addition, the Foundation represents the FreeBSD Project in executing contracts, license agreements, copyrights, trademarks, and other legal arrangements which require a recognized legal entity. TheFreeBSD Foundation is entirely supported by donations.
Open Source Initiative
This is an organization that has applied for and obtained tax-exempt status from the IRS under Section 501(c)(3) of the Internal Revenue Code.