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The Open Definition - Open Definition - Defining Open in Open Data, Open Content and Open Knowledge
Defines clear principles for open data and content, helping users understand and apply openness standards in various languages.
Understand openness standards for data and content
The Open Definition website explains what it means for data and content to be considered 'open.' Here, you can read simple, clear principles that help you understand the standards and requirements for openness, whether you’re working with data, documents, or digital content.
The site is a useful resource if you want to learn about open licenses, how to make your content open, or which licenses conform to these principles. It’s available in many languages, making it accessible to a global audience.
Whether you’re a creator, researcher, policymaker, or just curious about open knowledge, you’ll find practical information, official definitions, and helpful links to related resources and licensing guides.
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Official Unicode Consortium site sharing the global text and emoji standard, technical guides, and info on joining, supporting, or adopting characters.
Access NIST’s official hub for cybersecurity standards, research, and resources, including publications, projects, and the latest updates in information security.
Access documents, working groups, meetings, and agendas for IETF standards development—track progress and explore resources for internet standards work.
LOINC provides a global standard for identifying health measurements and documents, helping make health data easier to share and understand across systems.
WIPO offers global resources, information, and services for intellectual property, helping innovators protect patents, trademarks, and copyrights worldwide.
ETSI creates global ICT standards for networks, systems, and services, supporting innovation and interoperability across industries worldwide.
ANSI coordinates U.S. voluntary standards and accreditation, helping industries and organizations ensure quality, safety, and compliance nationwide.
The Extensible Web Manifesto advocates for a transparent, developer-driven approach to creating and prioritizing new web standards and features.
The International Color Consortium sets global standards for color management, helping ensure consistent color across devices, software, and workflows.
Official website of the JPEG committee, sharing news, standards, and resources about JPEG image formats and ongoing image compression developments.
Learn about the DOI system and join a global community focused on persistent digital identification and standards for scholarly and digital content.
Schema.org offers shared vocabularies that help you add structured data to your website, making your content more understandable to search engines and apps.
ISO sets international standards that help businesses and consumers ensure quality, safety, and efficiency across products, services, and industries worldwide.
The IETF develops and promotes internet standards, bringing together experts to advance the technology that powers the global Internet.
Explore the official archive of RFCs—key technical and policy documents that define Internet standards, protocols, and architecture, all in one place.
IAB Tech Lab is a non-profit group creating open technology standards that help build trust and growth in the global digital advertising ecosystem.
PHP-FIG brings together PHP projects to create shared standards and guidelines, helping developers build better, more compatible PHP software.
OASIS Open brings people and organizations together to develop open standards and solutions for global technology challenges.
Ecma International sets industry standards for information and communication systems, offering resources, publications, and updates for tech professionals.
Browse up-to-date drafts of CSS standards from the official CSS Working Group, providing technical specs and documentation for web developers.
IPTC sets global technical standards for the news media, offering resources, guides, and membership for those shaping the future of digital news.
SECG is a group that creates open standards for efficient cryptography, helping technology companies ensure secure and compatible computing systems.
Official site of the International Civil Aviation Organization, offering aviation standards, guidance, and global resources in multiple languages.
Wi-Fi Alliance connects companies worldwide to develop Wi-Fi standards and certify products, helping you find trusted devices and industry updates.
Official USB standards website with resources for developers, compliance info, certified products, and updates on USB technology advancements.
ASTM International develops and publishes global standards that support quality, safety, and innovation across industries and products worldwide.
The Java Community Process website is where Java developers collaborate to define and update Java standards, sharing updates and resources for the Java platform.
Official site for HDMI licensing, specs, and education—find technical details, compliance info, and updates on HDMI standards for devices and cables.
Get official RSS specifications, updates, and best practices from the RSS Advisory Board. Stay informed about Really Simple Syndication news and resources.
The WHATWG website is home to web standards and specifications, helping developers and browsers build and support modern web applications.
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Explore detailed guides and resources to help you understand and implement DDEX music industry standards. Find answers and support for your integration needs.
Access official NIST technical publications, research papers, and standards from the National Institute of Standards and Technology in one searchable library.
Activity Streams shares an open format for syndicating social activities across the web, helping sites and apps connect and display shared user activities.
Official site for the W3C Technical Architecture Group, sharing web standards, architecture guidance, and resources for developers and the tech community.
The Open Group is a global consortium that develops open, vendor-neutral technology standards and certifications for organizations and professionals.
The Web Standards Project promotes web standards, making web technologies more accessible and consistent for everyone across browsers and devices.
Archive of the International Digital Publishing Forum, the standards body for digital publishing, now merged with W3C. Find legacy info and resources here.
Defines how browsers and web apps handle requests and responses, offering detailed documentation for developers on the Fetch API standard.
ATSC develops international standards and guidelines for digital TV broadcasting, offering resources, news, and membership for industry professionals.
OpenJS Foundation supports the growth and development of key JavaScript technologies, offering resources, events, and community for developers worldwide.
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