Programming Languages & Frameworks
8,991,584 contributors
$135B
Open Source Index
Curated list of the most critical open source projects powering our modern digital infrastructure, measured by contributor volume and software value
Stacks
Most contributors
Developer Tools
8,321,745 contributors
$156B
Application Definition and Development
3,199,399 contributors
$54B
Artificial Intelligence & Machine Learning
1,927,878 contributors
$17B
Observability & Analysis
1,915,083 contributors
$48B
Operating Systems & Virtualization
1,571,255 contributors
$54B
Orchestration & Management
1,369,596 contributors
$80B
Security & Privacy
910,996 contributors
$35B
User Interface & Applications
745,690 contributors
$12B
Data Infrastructure & Analytics
608,415 contributors
$22B
Networking
577,680 contributors
$14B
Provisioning
534,421 contributors
$19B
Runtime
434,960 contributors
$20B
Blockchain & Distributed Ledger
414,328 contributors
$6.9B
Scientific Computing & Engineering
375,552 contributors
$13B
End‑User Applications
371,397 contributors
$4.1B
Web & CMS Development
321,793 contributors
$3.8B
Community & Collaboration
266,773 contributors
$15B
Interactive Entertainment
254,606 contributors
$5.1B
Self-Hosted Solutions
200,080 contributors
$1.6B
Internet of Things
171,588 contributors
$1.4B
Smart Home & IoT
170,301 contributors
$284M
Business Intelligence & Analytics
144,094 contributors
$1.7B
Game Development
139,010 contributors
$3.6B
Web Platforms
106,922 contributors
$852M
Web Foundations
99,611 contributors
$5.3B
Business Automation & Integration
68,924 contributors
$826M
User Environment
65,098 contributors
$19M
Collaboration & Social Platforms
30,363 contributors
$837M
Privacy Tools
29,896 contributors
$241M
Peripherals & Hardware Integration
29,169 contributors
$172M
Business & Productivity
27,450 contributors
$847M
Creative & Design Tools
26,222 contributors
$1.1B
Decentralized Technologies
26,187 contributors
$121M
Communication & Collaboration
21,848 contributors
$80M
Multimedia & Creative Tools
16,721 contributors
$187M
Product Intelligence & Experimentation
13,984 contributors
$202M
IT Operations & Management
13,867 contributors
$158M
Scientific & Medical Applications
13,503 contributors
$271M
Surveillance & Video Analytics
12,434 contributors
$44M
Communication Infrastructure
9,980 contributors
$66M
Hardware & Embedded
9,216 contributors
$162M
Digital Presence & Marketing
8,857 contributors
$74M
Enterprise IT Operations & Management
8,532 contributors
$324M
Embedded Systems & Hardware
8,344 contributors
$125M
Developer Resources
7,496 contributors
$15M
Quantum Computing
5,970 contributors
$116M
Signal Processing & Communications
5,055 contributors
$114M
Compatibility & Emulation
4,497 contributors
$6M
Business Automation & Decision Management
3,515 contributors
$155M
Geospatial Software
3,337 contributors
$128M
Download Management
3,239 contributors
$13M
Computer Science Fundamentals
2,861 contributors
$151M
Data Repositories
2,622 contributors
$292M
Microsoft Ecosystem Development
1,960 contributors
$1.3M
Systems & Infrastructure
1,901 contributors
$8.1M
Enterprise Middleware
1,825 contributors
$120M
Home Automation & IoT
1,310 contributors
$2.2M
Digital Identifier Infrastructure
445 contributors
$58M
Hardware Design & Automation
222 contributors
$217M
Software Discovery
2 contributors
$12K