Mapping GitHub Sponsorships: A Longitudinal Observatory for Open-Source Sustainability

TL;DR

This paper presents a live observatory for tracking GitHub Sponsors, providing real-time data and analysis tools to study open-source funding patterns and sustainability.

Contribution

It introduces a novel, continuously updating observatory with an interactive dashboard for large-scale analysis of GitHub sponsorship data.

Findings

49,000+ users in the sample dataset across 144 countries

Strong participation asymmetries in sponsorship patterns

Geographic concentration of sponsors and sponsored developers

Abstract

Financial sustainability is vital for open-source software, yet systematic research on funding remains limited. GitHub Sponsors, launched in 2019 as a direct developer-to-developer funding model, lacks bulk API access, hindering large-scale studies. This paper introduces a live, continuously operating observatory for tracking and analyzing the GitHub Sponsors ecosystem. The observatory performs priority-based graph traversal with daily incremental updates, real-time normalization, and exposes collected data through an interactive dashboard and analysis-ready CSV exports. A sample dataset collected during a 72-hour run captures 49K+ users across 144 countries and serves as an example of the tool's output, not a fixed deliverable. An interactive dashboard (https://github-sponsorships.com) enables practitioners and researchers to explore sponsorship patterns, filter by geography and demographics, and benchmark against funded peers. Preliminary results on the sample show strong participation asymmetries and geographic concentration, suggesting several research directions.