The mission of the Apache Software Foundation (ASF) is to provide software for the public good. This includes providing services and support for over 200 software project communities who choose to join the ASF.

The Cloud Native Computing Foundation (CNCF) is a nonprofit organization committed to advancing the development of cloud native technology and services by creating a set of common container technologies designed around technical merit and end user value. Google is a founding member and contributed the Kubernetes container management system.

FOSDEM is the largest free and non-commercial annual event for open source developers organized by the community for the community. The conference takes place annually in Brussels with over 6,000 attendees. The conference enables developers to stay informed about the latest developments in the free software world as well as attend talks on various topics by project leaders and participants.

FSF Europe is a non profit organization working to create general understanding and support for software freedom in Europe. Google is a proud member and supporter of their internship program.

The GNOME Foundation works to further the goal of the GNOME Project to create a free software computing platform for the general public that is designed to be elegant, efficient, and easy to use. The Gnome project and community have been very active in the Google Summer of Code program since it began in 2005.

The Linux Foundation is a trade association dedicated to fostering the growth of the Linux operating system and related projects. The Linux Foundation promotes, protects, and standardizes Linux "by providing a comprehensive set of services to compete effectively with closed platforms" and promoting standardization and technical collaboration.

The LLVM Project is an umbrella for a collection of modular and reusable compiler and toolchain technologies. Google uses several languages built on top of LLVM technologies.

LWN.net aims to be the premier news and information source for the free software community. It provides comprehensive coverage of development, legal, commercial, and security issues.

The OpenJS Foundation is the premier home for critical open source JavaScript projects, including Appium, Dojo, jQuery, Node.js, and webpack, and 27 more.

NumFOCUS is a non-profit that provides a stable, independent, and professional home for open source scientific computing projects. NumFOCUS's educational programs and events, such as the global PyData network, aim to increase collaboration and communication within the data science and scientific computing community.

The OGC (Open Geospatial Consortium) is an international organization committed to making quality open standards for the global geospatial community. These standards are made through a consensus process and are freely available for anyone to use to improve sharing of the world's geospatial data.

The OpenPOWER Foundation is an open technical membership organization that enables members to customize and optimize POWER CPU processors and system platforms for their specific needs. Google is a founding member of the Foundation, and regularly contributes technical guidance as well as hardware design specifications.

The Open Source Initiative (OSI) protects and promotes open source software through education, collaboration, and infrastructure support. It also stewards the Open Source Definition (OSD).

The Open Source Lab, in partnership with the School of Electrical Engineering and Computer Science at Oregon State University, provides hosting for hundreds of open source projects.

PyCon is the largest annual gathering for the community that uses and develops the open-source Python programming language. PyCon is organized by and for the Python community. Through PyCon, the PSF advances its mission of growing the international community of Python programmers.

Python is a very popular high-level programming language for general-purpose programming. It is widely used at Google. The Python Software Foundation promotes and advances the Python programming language. It also supports and facilitates the growth of a diverse international community of Python developers.

The R language is an open source environment for statistical computing and graphics, and runs on a wide variety of computing platforms. The R Consortium works with and provides support to key organizations developing, maintaining, distributing and using R. Google uses R in a wide variety of internal projects.

The Rust Foundation is an independent non-profit organization founded to steward the Rust programming language and ecosystem, with a unique focus on supporting the set of maintainers that govern and develop the project.

Schema.org is a collaborative, community activity with a mission to create, maintain, and promote schemas for structured data on the Internet, on web pages, in email messages, and beyond. A shared vocabulary makes it easier for webmasters and developers to decide on a schema and for users to get the maximum benefit.

The Conservancy provides a non-profit home and infrastructure for more than 40 free and open source software projects. Their work as the fiscal agent for many of the Google Summer of Code mentoring organizations is a huge help to Google. Google is also proud to sponsor Conservancy's ongoing copyleft compliance work.

C++ is a venerable yet still widely used and deeply influential general-purpose programming language. It is widely used at Google and has been since the company's beginning.

The OWASP® ModSecurity Core Rule Set (CRS) is a set of generic attack detection rules for use with ModSecurity or compatible web application firewalls. The CRS aims to protect web applications from a wide range of attacks, including the OWASP Top Ten, with a minimum of false alerts. The CRS provides protection against many common attack categories.

We harness the power of collaboration around Open Technology being open source software, open source hardware and open data, in the UK. Collaboration is central to everything we do and we use it to bring together business, public sector and community in the UK to collaborate locally and globally.

GDAL is a translator library for raster and vector geospatial data formats that is released under an X/MIT style Open Source License by the Open Source Geospatial Foundation. As a library, it presents a single raster abstract data model and single vector abstract data model to the calling application for all supported formats. It also comes with a variety of useful command line utilities for data translation and processing.

The Open Usage Commons gives open source project users peace of mind that projects are free and fair to use. The Open Usage Commons helps projects protect their project identity through programs such as trademark management and usage guidelines.

FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. It supports the most obscure ancient formats up to the cutting edge.

We collect and preserve software in source code form, because software embodies our technical and scientific knowledge and humanity cannot afford the risk of losing it. Software is a precious part of our cultural heritage. We curate and make accessible all the software we collect, because only by sharing it we can guarantee its preservation in the very long term.

The OpenBSD Foundation is a Canadian not-for-profit corporation which exists to support OpenBSD and related projects such as OpenSSH, OpenBGPD, OpenNTPD, OpenSMTPD, LibreSSL, mandoc and rpki-client.