Yes, we're open source!
Don't think a bank can do open source? We'd like to change your mind.
We launched the Capital One Open Source Program Office in 2015, one year after our first open source contributions. Using open source throughout our tech stack lets us use the power of the open source community to innovate quickly and build software that’s as high quality and secure as our industry demands.
Open Source First
We develop and open source software designed to meet the demands of our highly regulated industry.
Contributions to 100+ Projects
Our technologists have made thousands of contributions to more than 100 projects, including 25 of our own.
Invested in the Community
We sponsor the Cloud Native Computing Foundation, Python, FINOS, Apache and more to help keep open source sustainable.
New Project
Introducing Data Profiler
A Python library designed to make data analysis, monitoring and sensitive data detection easy.
Events
Here, there and everywhere
Every year we sponsor and attend open source events like All Things Open, PyCon, KubeCon and more. Check out where we’ll be next.
Careers
Yes, we’re hiring!
Come help us change banking for good by using technology to serve our customers quicker and more easily than ever.
Featured Open Source Articles
Open Source
Data Profiler - An Open Source Solution to Explain Your Data
Gain insight into large data with Data Profiler, an open source project from Capital One
Open Source
Standardizing the Model Development Process with Rubicon
An open source tool for capturing & storing model training & execution information in a repeatable & searchable way
Open Source
Lessons From Adopting Python as a Team
Rewriting legacy ETL jobs in python when you’re not python devs
Open Source
Lessons From Adopting Python as a Team
Open Source
A Better Way to View Sequence Diagrams
With Capital One’s Open Source Architecture-Viewer