61,984 articles
Open information extraction
Open information extraction is a natural language processing method that extracts relational tuples of arguments and predicates from text without predefined relation types, introduced in 2007.
Open Internet Order
The Open Internet Order is a 2015 FCC rule establishing net neutrality rules for US broadband providers, banning blocking, throttling, and paid prioritization under Title II.
Open Internet Regulation (EU) 2015/2120
Regulation (EU) 2015/2120 is the European Union regulation adopted in November 2015 that enshrined net neutrality in EU law and abolished retail roaming surcharges from 15 June 2017.
Open letter on artificial intelligence (2015)
The open letter on artificial intelligence of 2015, published by the Future of Life Institute, urges research to keep AI robust and beneficial and drew thousands of signatories.
Open LLM Leaderboard
The Open LLM Leaderboard was an automated Hugging Face ranking service that evaluated open-weight large language models on fixed benchmarks, its original version archived in June 2024.
Open Mobile Alliance
The Open Mobile Alliance (OMA) is a non-profit standards organization formed in June 2002 by nearly 200 mobile companies, publishing open service-layer specifications for mobile and IoT interoperability.
Open Networking Foundation
The Open Networking Foundation (ONF) was an operator-led nonprofit consortium, founded in 2011 to advance software-defined networking through OpenFlow and open standards; it dissolved in December 2023, moving its projects to the Linux Foundation.
Open plan
An open plan is a floor layout where kitchen, dining, and living rooms flow together without walls, popularized by modernist architecture after World War II.
Open Platform Communications
Open Platform Communications (OPC), originally OLE for Process Control, is a series of open standards for secure data exchange in industrial automation, first released in 1996 and maintained by the OPC Foundation.
Open pond cultivation
Open pond cultivation is the large-scale growth of photosynthetic microorganisms, chiefly microalgae and cyanobacteria, in shallow open-air raceway ponds whose low cost makes them the basis of industrial algal biofuel production.
Open post-training reproduction efforts (Open-R1)
Open-R1 is a Hugging Face project launched in January 2025 to reconstruct the missing training data and pipeline behind DeepSeek-R1, whose weights were open but whose recipe was not.
Open Quantum Materials Database
The Open Quantum Materials Database (OQMD) is a free database of density functional theory calculations on inorganic materials, maintained by the Wolverton group at Northwestern University.
Open RAN
Open RAN is a cellular network architecture in which the radio access network is built from disaggregated, virtualized multivendor components connected through open interfaces, replacing single-supplier systems.
Open Reaction Database
The Open Reaction Database (ORD) is an open-access repository and schema for organic reaction data, begun in 2019 to support machine learning for reaction prediction and synthesis planning.
Open Semantic Interchange
Open Semantic Interchange (OSI), now Apache Ossie (incubating), is a vendor-neutral, YAML/JSON open specification launched by Snowflake, Salesforce, dbt Labs, and RelationalAI in September 2025 for exchanging semantic model metadata, metrics, dimensions, and relationships across BI, analytics, and AI tools.
Open Shortest Path First
Open Shortest Path First (OSPF) is a link-state interior gateway protocol, specified in RFC 2328 in 1998, that routes IP traffic within a single autonomous system using Dijkstra's algorithm.
Open skies agreement
An open skies agreement is a bilateral or multilateral air services agreement removing most government control over international air transport, letting airlines decide routes, capacity, and fares.
Open source
Open source is software whose distribution terms allow anyone to use, study, modify, and redistribute the code; the Open Source Initiative's ten-criterion definition has governed the term since 1998.
Open Source AI Definition (OSI)
The Open Source AI Definition (OSAID) is a standard by the Open Source Initiative specifying what AI systems must disclose to be called open source.
Open Source Definition
The Open Source Definition (OSD) is a set of ten license criteria maintained by the Open Source Initiative, derived from the Debian Free Software Guidelines in 1998.
Open Source Development Labs
Open Source Development Labs was a nonprofit consortium founded in 2000 to support Linux, employing Linus Torvalds until it merged into the Linux Foundation in 2007.
Open Source Geospatial Foundation
The Open Source Geospatial Foundation (OSGeo) is a Delaware nonprofit founded in 2006 to support and promote free and open-source geospatial software, including QGIS, GDAL, and PostGIS.
Open Source Initiative
The Open Source Initiative (OSI), founded by Eric Raymond and Bruce Perens in 1998, is a nonprofit that maintains the Open Source Definition and approves open source licenses.
Open Source Leg
The Open Source Leg (OSL) is an open-source robotic knee–ankle prosthesis developed at the University of Michigan to give researchers a standardized, low-cost hardware platform for testing control strategies.
Open standard
An open standard, also called an open specification, is a technical standard developed and licensed so that anyone can implement it, though definitions differ between governments and standards bodies.
Open table format
Open table formats (Apache Hudi, Apache Iceberg, Delta Lake, Apache Paimon) are open specifications combining table metadata and a transaction protocol that give ACID transactions, schema evolution, and time travel to data files like Parquet on object storage, the foundation of the data lakehouse.
Open Technology Fund
The Open Technology Fund (OTF) is an American non-profit, created in 2012 at Radio Free Asia, that funds secure internet-access tools such as Signal and Tor and advances internet freedom.
Open Virtualization Format
Open Virtualization Format (OVF), also called Open Virtual Machine Format, is an open DMTF standard bundling virtual machines with their disks and metadata for transport between virtualization platforms.
Open vSwitch
Open vSwitch is an open source virtual switch, begun by Nicira Networks, that switches traffic between virtual machines and physical networks and is controlled through OpenFlow and a configuration database.
Open wagon
An open wagon, also called an open goods wagon, is a railway freight wagon with no roof, used to carry bulk materials and other weather-tolerant freight.