Welcome to OSCI, where commercial organizations are ranked by the volume of their employees’ year-to-date open source contributions on GitHub, the leading source code repository for free and open source (FOSS) projects.

Open Source Contributor Index

Updated April 2nd, 2021

The table below shows the OSCI ranking for GitHub activity in March 2021. This month Microsoft has reached the top spot in the ranking. Huawei, Tencent and Alibaba climbed in to the Top 20 following a strong upwards trend in activity from the start of the year.

Take a look at our latest article: Programming Language Popularity on GitHub

Monthly

Yearly

March
2021
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About OSCI

More about OSCI

To learn more about OSCI, take a look at this article in our blog section about OSCI and why we created it.

How does OSCI work?

To create this index, we use publicly available GitHub commit event data from GH Archive. This includes all year-to-date commits to public GitHub projects, which generally correlates to them being open source. OSCI measures the Active Contributors (10+ commits) and the Total Community (1+ commit) at each organization. In the spirit of transparency in the open source community, the query logic of OSCI is available on GitHub. The latest OSCI rankings are published monthly. The archive of the previous rankings is stored on the OSCI GitHub repo.

How are commit authors linked to commercial organizations?

The email domain of the commit author is used to identify their organization. The goal of OSCI is to rank open source activity by commercial organizations, so contributors with email addresses from universities, research institutions and free email providers are not included.

Who owns and manages OSCI?

EPAM is the company behind OSCI. Our team created OSCI because we believe it is important to highlight the top contributing organizations who recognize the value of open source as much as we do.