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Discover the world's most critical open source projects
Featured
Top 30 Open Source Projects
A curated list of the most essential open source projects, based on the OpenSSF Criticality Score. These projects power global infrastructure and are widely relied upon across industries.
547,920 contributors
$10B
Featured projects
Cloud Native Computing Foundation (CNCF)
The Cloud Native Computing Foundation (CNCF) is an open-source organization under the Linux Foundation that promotes the development and adoption of cloud-native technologies. It serves as a hub for projects that enable scalable, resilient, and portable applications in modern cloud environments.
233 projects
567,833 contributors
$29B
Featured projects
The Linux Kernel Organization
The Linux Kernel Organization is responsible for maintaining and distributing the Linux kernel, the core of the Linux operating system. It oversees the development, collaboration, and release processes for the kernel, ensuring stability, security, and performance.
1 project
42,974 contributors
$1.2B
Featured projects
PyTorch Foundation
The PyTorch Foundation is an organization under the Linux Foundation that oversees the development and governance of PyTorch, an open-source deep learning framework originally developed by Meta (Facebook). It provides a structured environment for collaboration among researchers, developers, and industry partners.
3 projects
64,533 contributors
$160M
Featured projects
Open Source Security Foundation (OpenSSF)
The Open Source Security Foundation (OpenSSF) is a collaborative initiative under the Linux Foundation, dedicated to improving security in open-source software. It brings together industry leaders, developers, and security experts to address vulnerabilities and enhance the supply chain security of open-source projects.
28 projects
7,046 contributors
$493M
Featured projects
LF AI & Data
LF AI & Data is a foundation under the Linux Foundation dedicated to advancing open-source artificial intelligence (AI), machine learning (ML), and data projects. It fosters collaboration between industry leaders, researchers, and developers to create scalable, trustworthy, and interoperable AI and data solutions.
72 projects
53,345 contributors
$2.5B
Featured projects
FINOS (The Fintech Open Source Foundation)
FINOS (The Fintech Open Source Foundation) is a Linux Foundation project dedicated to open-source innovation in the financial services industry. It fosters collaboration between banks, fintech companies, technology firms, and regulatory bodies to drive open-source adoption and create interoperable solutions for finance.
68 projects
12,241 contributors
$815M
Featured projects
Common Cloud Controls
FinOps Foundation
Focuses on advancing cloud financial management through best practices, education, and standards.
3 projects
12 contributors
Featured projects
FinOps Project
LF Energy (LFE)
Accelerates the energy sector's transition to open-source technologies for smarter grids and sustainable energy solutions.
40 projects
3,561 contributors
$836M
Featured projects
OpenJS Foundation
Hosts projects that support the JavaScript ecosystem, fostering collaboration and innovation in web technologies.
42 projects
120,599 contributors
$3.5B
Featured projects
LF Decentralized Trust
The open source foundation for decentralized technologies and ecosystems.
30 projects
29,434 contributors
$1.1B
Featured projects
Joint Development Foundation
Facilitates the creation of standards and specifications through open-source collaboration.
24 projects
48 contributors
Featured projects
Academy Software Foundation
The mission of the Academy Software Foundation (ASWF) is to increase the quality and quantity of contributions to the content creation industry’s open source software base; to provide a neutral forum to coordinate cross-project efforts; to provide a common build and test infrastructure; and to provide individuals and organizations a clear path to participation in advancing our open source ecosystem.
19 projects
12,346 contributors
$515M
Featured projects
LF Edge
Develops open-source software for edge computing, enabling devices to process data closer to where it's generated.
18 projects
86,752 contributors
$2B
Featured projects
Open Mainframe Project (OMP)
Promotes the adoption and development of open-source software on mainframe platforms.
17 projects
3,900 contributors
$478M
Featured projects
O-RAN Software Community
Develops open-source software for Radio Access Networks (RAN) to promote interoperability and innovation in mobile networks.
15 projects
4,419 contributors
$215M
Featured projects
Cloud Foundry Foundation (CFF)
The Cloud Foundry Foundation (CFF) is a directed fund under the Linux Foundation that governs and promotes Cloud Foundry, an open-source, multi-cloud Platform-as-a-Service (PaaS) designed to simplify application development and deployment across diverse cloud environments.
13 projects
19,003 contributors
$5.5B
Featured projects
LF Networking (LFN)
LF Networking (LFN) provides the largest set of open source networking projects via a broad industry coalition that comprise the open networking stack. The projects within LF Networking consolidate under a single umbrella with common governance to simplify engagement for members, enhance operational excellence, integrate components and increase interoperability across the stack, and foster a commercially-ready ecosystem.
12 projects
12,596 contributors
$1.7B
Featured projects
Call for Code
A worldwide, multi-year initiative inspiring developers to solve pressing problems with sustainable solutions. Commit to the cause. Push for change.
11 projects
589 contributors
$47M
Featured projects
Data Plane Development Kit (DPDK)
The Data Plane Development Kit (DPDK) is a Linux Foundation project providing open-source libraries and drivers to accelerate packet processing in user space across various CPU architectures. It enables high-throughput, low-latency networking applications by bypassing the kernel, making it ideal for performance-critical systems like routers, firewalls, and telecom infrastructure.
11 projects
2,049 contributors
$104M
Featured projects
Confidential Computing Consortium (CCC)
The Confidential Computing Consortium (CCC) is a Linux Foundation project that brings together hardware vendors, cloud providers, and software developers to accelerate the adoption of confidential computing—technology that protects data in use by performing computation in a trusted execution environment (TEE).
11 projects
2,990 contributors
$195M
Featured projects
High Performance Software Foundation (HPSF)
Aims to build and promote open-source software for high-performance computing applications.
10 projects
8,835 contributors
$891M
Featured projects
Continuous Delivery Foundation (CDF)
The Continuous Delivery Foundation (CDF) is a Linux Foundation project that fosters collaboration on open-source continuous integration and delivery (CI/CD) tools. It hosts key projects like Jenkins, Tekton, Spinnaker, and Jenkins X, promoting best practices and interoperability in software delivery.
10 projects
16,791 contributors
$908M
Featured projects
CHIPS Alliance Fund
The CHIPS Alliance Fund under the Linux Foundation supports open-source hardware development, fostering collaboration on silicon device designs, including CPUs and SoCs, to accelerate innovation and reduce development costs.
9 projects
2,028 contributors
$60M
Featured projects
Project Jupyter
Provides open-source tools for interactive computing, including Jupyter Notebooks, widely used in data science and education.
9 projects
37,961 contributors
$110M
Featured projects
Automated Compliance Tooling (ACT)
Open initiative focused on developing and maintaining open-source tools that automate and streamline compliance with industry standards, regulations, and policies across software systems and infrastructure.
7 projects
27 contributors
Featured projects
GraphQL Foundation
Supports the GraphQL query language and related tools to enhance API development and usage.
7 projects
12,728 contributors
$15M
Featured projects
Open Container Initiative (OCI)
Creates open industry standards around container formats and runtimes to ensure portability and interoperability.
6 projects
2,943 contributors
$42M
Featured projects
R Consortium, Inc.
Promotes the R programming language and its ecosystem through funding and support of open-source projects.
5 projects
61 contributors
Featured projects
Dronecode Project, Inc.
Supports open-source UAV (unmanned aerial vehicle) software, including PX4 autopilot, to advance drone innovation.
5 projects
20,601 contributors
$801M
Featured projects
LF Connectivity
Focuses on advancing open-source projects related to connectivity technologies, including networking and telecommunications.
4 projects
7 contributors
Featured projects
LF Connectivity
Magma Fund
Supports the Magma project, which provides a software platform for building carrier-grade mobile networks.
3 projects
1,140 contributors
$86M
Featured projects
SPDX
(Software Package Data Exchange) Provides a standard format for communicating software bill of materials (SBOM) information.
3 projects
142 contributors
Featured projects
Open 3D Foundation
Supports the development of open-source 3D engine technology for gaming, simulation, and visualization applications.
3 projects
2,864 contributors
$282M
Featured projects
Post-Quantum Cryptography Alliance
Focuses on developing cryptographic algorithms resistant to quantum computing threats.
3 projects
1,598 contributors
$120M
Featured projects
US GOV OPS
The US GOV OPS project under the Linux Foundation is an initiative aimed at enhancing the adoption and development of open-source software within U.S. government operations.
2 projects
1 contributor
Featured projects
Aether Fund
Aether is a cloud native implementation of 5G Connectivity-as-a-Service.
2 projects
3,516 contributors
$332M
Featured projects
DENT Fund
Develops an open-source network operating system for disaggregated network switches, targeting enterprise edge and retail environments.
2 projects
342 contributors
$46M
Featured projects
InterUSS Platform Fund
Develops an open-source platform for Unmanned Aircraft System (UAS) Service Suppliers to share airspace data.
2 projects
138 contributors
$6.4M
Featured projects
Tazama Project
Develops open-source tools for monitoring and observability in cloud-native environments.
2 projects
99 contributors
$21M
Featured projects
Alliance for OpenUSD Fund (AOUSDF)
The Alliance for OpenUSD (AOUSD) is an open, non-profit organization dedicated to promoting the interoperability of 3D content through OpenUSD (Universal Scene Description).
2 projects
0 contributors
Featured projects
Broadband Fund
Supports open-source projects that transform broadband networks and the Passive Optical Network (PON) industry, including the SEBA reference design and the VOLTHA project for virtualizing multi-vendor PON systems.
2 projects
39 contributors
$398M
Featured projects
P4 Fund
Supports the P4 programming language, enabling programmable data planes in networking devices.
2 projects
219 contributors
Featured projects
kernelCI Initiative Fund
Automates testing of the Linux kernel across various hardware platforms to ensure stability and compatibility.
2 projects
352 contributors
$6.5M
Featured projects
The Presto Foundation Fund
Supports Presto, an open-source distributed SQL query engine for big data analytics.
2 projects
5,404 contributors
$2B
Featured projects
Green Software Foundation Fund
Advocates for sustainable software development practices to reduce carbon emissions in the tech industry.
2 projects
0 contributors
Featured projects
Green Software Foundation
RISC-V International
Advances the RISC-V open standard instruction set architecture, promoting open hardware development.
2 projects
3,891 contributors
$23M
Featured projects
Margo
Aims to develop open-source solutions for managing and orchestrating network functions and services.
2 projects
102 contributors
$731K
Featured projects
The Linux Foundation
A non-profit organization established in 2000 to support Linux development and open-source software projects.
2 projects
262 contributors
$5.9M
Featured projects
ELISA Fund
(Enabling Linux in Safety Applications) Aims to make Linux suitable for safety-critical systems like automotive and medical devices.
2 projects
102 contributors
Featured projects
Open Programmable Infrastructure Fund
Supports the development of open-source solutions for programmable infrastructure, including SmartNICs and DPUs.
2 projects
194 contributors
$15M
Featured projects
Civil Infrastructure Platform (CIP)
The Civil Infrastructure Platform (CIP) is a Linux Foundation project that provides an open-source, industrial-grade software base layer for long-term maintenance of critical infrastructure systems like power, transportation, and healthcare.
1 project
0 contributors
Featured projects
Overture Maps Foundation Fund
Collaborates on open map data to create interoperable and high-quality mapping solutions.
1 project
496 contributors
$2.6M
Featured projects
OpenWallet Foundation
Develops open-source software for secure and interoperable digital wallets, supporting payments and identity verification.
1 project
1,267 contributors
$29M
Featured projects
TARS Foundation
Supports microservices development, focusing on the TARS framework for building distributed applications.
1 project
0 contributors
Featured projects
Youki
Youki is a project under the Linux Foundation that provides a container runtime written in Rust. It’s designed to be fast, secure, and lightweight, serving as an alternative to runc (the default OCI runtime used by Docker and containerd). Youki implements the Open Container Initiative (OCI) runtime spec, focusing on safety and modern code practices using Rust.
1 project
409 contributors
$1.7M
Featured projects
Zephyr Project
Zephyr Project
1 project
15,392 contributors
$145M
Featured projects
Xen Project
Xen Project
1 project
1,782 contributors
$25M
Featured projects
Delta Lake Project
The Delta Lake Project is an open-source storage framework hosted by the Linux Foundation's LF AI & Data Foundation. It enables the creation of a Lakehouse architecture by providing ACID transactions, scalable metadata handling, and time travel capabilities on top of existing data lakes.
1 project
3,888 contributors
$39M
Featured projects
AsyncAPI
AsyncAPI seeks to improve the current state of Event-Driven Architectures (EDAs) and the tooling system around them.
1 project
3,543 contributors
$33M
Featured projects
OpenAPI Initiative
Promotes the OpenAPI Specification for defining standard, language-agnostic interfaces to RESTful APIs.
1 project
3,509 contributors
$5.9M
Featured projects
Servo Project
Develops a high-performance browser engine written in Rust, focusing on parallelism and safety.
1 project
8,300 contributors
$754M
Featured projects
eBPF Foundation
Promotes the extended Berkeley Packet Filter (eBPF) technology, enabling safe and efficient kernel-level programmability.
1 project
0 contributors
Featured projects
Working Group for RUST Bindings
Working Group for RUST Bindings
1 project
56 contributors
$36M
Featured projects
OpenSearch Software Foundation
The OpenSearch Software Foundation (OSSF) is an open-source organization dedicated to the development and governance of OpenSearch, a community-driven search and analytics suite. Originally forked from Elasticsearch and Kibana after their licensing changes, OpenSearch is supported by Amazon Web Services (AWS) but operates independently under an open governance model.
1 project
14,309 contributors
$311M
Featured projects
Unified Acceleration Foundation Fund
Aims to create a unified programming model for diverse computing architectures.
1 project
0 contributors
Featured projects
Camara Fund
The CAMARA Fund under the Linux Foundation supports the CAMARA project, which develops open, standardized telco APIs to enable cross-network application interoperability.
1 project
227 contributors
Featured projects
OpenChain Project
Establishes standards for open-source compliance to ensure consistent and reliable software supply chains.
1 project
522 contributors
$8.5M
Featured projects
Open Mobile Hub
Provides open-source tools and frameworks for building and managing mobile applications and services.
1 project
201 contributors
$25M
Featured projects
Core Infrastructure Initiative (CII)
The Core Infrastructure Initiative (CII) was a Linux Foundation project launched in 2014 to fund and support critical open-source software projects essential to internet infrastructure, such as OpenSSL and OpenSSH.
1 project
48 contributors
Featured projects
Valkey
Valkey
1 project
1,810 contributors
$14M
Featured projects
MLflow
An open-source platform for managing the machine learning lifecycle, including experimentation, reproducibility, and deployment.
1 project
28 contributors
$42M
Featured projects
RISE Project
(RISC-V Software Ecosystem) Aims to enhance the software ecosystem for RISC-V processors across various applications.
1 project
99 contributors
Featured projects
SONiC Fund
Supports SONiC (Software for Open Networking in the Cloud), an open-source network operating system.
1 project
5,052 contributors
$416M
Featured projects
Ceph Foundation
The Ceph Foundation is an open-source initiative under the Linux Foundation that supports the development and adoption of Ceph, a highly scalable and distributed storage platform. Ceph provides unified storage solutions, including object, block, and file storage, making it popular for cloud and enterprise environments.
1 project
7,559 contributors
$297M
Featured projects
TODO Group
(Talk Openly, Develop Openly) A community of open-source program managers sharing best practices and tools.
1 project
893 contributors
$6.3M
Featured projects
IO Visor Project
Offers a programmable data plane for modern networking, leveraging technologies like eBPF.
1 project
0 contributors
Featured projects
Automotive Grade Linux (AGL)
Automotive Grade Linux (AGL) is a collaborative open-source project under the Linux Foundation that brings together automakers, suppliers, and technology companies to develop a unified software platform for in-vehicle infotainment (IVI) and other automotive applications.
1 project
1,499 contributors
$117M
Featured projects
Coalition for Content Provenance and Authenticity
The Coalition for Content Provenance and Authenticity (C2PA) is a Linux Foundation project that develops open technical standards to certify the origin and history of digital media, aiming to combat misinformation and enhance trust in online content.
1 project
120 contributors
$24M
Featured projects
Open Security Controller Project (OSC)
Provides open-source solutions for orchestrating security services in software-defined networks.
1 project
0 contributors
Featured projects
Yocto Project
Yocto Project
1 project
5,313 contributors
$16M
Featured projects
openIDL
(Open Insurance Data Link) Aims to improve data sharing and analytics in the insurance industry through open-source solutions.
1 project
34 contributors
Featured projects
Core Embedded Linux Project (CELP)
The Core Embedded Linux Project (CELP) is a Linux Foundation initiative that provides a vendor-neutral forum for advancing embedded Linux technologies across various industries, including consumer electronics, industrial systems, and IoT. It supports long-term kernel maintenance, open-source tooling, and collaborative projects like the Civil Infrastructure Platform and the Fuego test framework.
1 project
80 contributors
Featured projects
OpenHPC Project
Provides a collection of open-source software components and tools for High Performance Computing (HPC) environments.
1 project
3 contributors
Featured projects
Technical Documentation & Guides
Official technical documentation, guides, and tutorials for software platforms and services. This collection includes open source repositories that host and man age documentation resources for developer platforms.
300 projects
994,077 contributors
$16B
Featured projects
Web Client Applications
Web-based client applications that provide rich interfaces for interacting with backend services, typically delivered via modern browsers.
160 projects
192,363 contributors
$1.2B
Linting & Code Quality Tools
Tools for analyzing code for errors, enforcing coding standards, and improving code quality.
155 projects
101,546 contributors
$659M
Featured projects
Backend Web Frameworks
Frameworks for server-side web application development, like Django or Express.js.
153 projects
172,425 contributors
$560M
Featured projects
REST API Client Libraries
Libraries that simplify interactions with RESTful APIs by providing a dedicated client interface for consuming web services in applications.
151 projects
97,637 contributors
$723M
Command-Line Interface Tools
Command‐line utilities and frameworks designed for interacting with services and systems via a textual interface.
125 projects
263,939 contributors
$6.5B
Featured projects
Documentation Generators
Tools for generating and managing documentation from source files (e.g. reStructuredText, Markdown) into modern documentation websites.
122 projects
140,253 contributors
$1.5B
Scientific Computing Libraries
Libraries for numerical and scientific computation, simulation, and advanced mathematical analysis.
116 projects
91,472 contributors
$2.4B
Featured projects
Kubernetes Operators
Tools and controllers that automate the deployment, configuration, and management of complex applications on Kubernetes using the operator pattern.
115 projects
132,660 contributors
$9.5B
Featured projects
Frontend Web Frameworks
Libraries for building interactive user interfaces, such as React or Vue.js.
108 projects
372,725 contributors
$1.7B
Featured projects
Infrastructure Provisioning (IaC)
Software for defining and managing infrastructure using code
103 projects
252,025 contributors
$6.9B
Featured projects
ORM & Persistence Frameworks
Libraries and frameworks that simplify data persistence by mapping objects to relational databases, easing integration between object models and SQL databases.
101 projects
167,155 contributors
$377M
Data Modeling & Validation Libraries
Libraries that provide tools for parsing, validating, and transforming data using language-native features such as type hints.
94 projects
90,908 contributors
$194M
Microservices Integration Tools
Libraries and frameworks that simplify the integration of microservices patterns—including service discovery, client‐side load balancing, circuit breaking, and dynamic routing—to build resilient cloud-native applications.
93 projects
100,234 contributors
$5.5B
ML Libraries & Toolkits
Specialized libraries and tools for specific machine learning tasks and algorithms.
84 projects
128,052 contributors
$844M
Featured projects
Cross-Platform & Low-Code Mobile
Frameworks supporting multi-OS deployment—ranging from code-driven solutions (React Native, Flutter) to low-/no-code visual app builders.
83 projects
260,895 contributors
$661M
Featured projects