TL;DR Established in 2022 as a way to help support the great open source ecosystem projects that Spotify relies on and that our developers love, the  provides monetary support to projects that underpin our technology stack. To close out last year, we chose three projects to receive support from the 2025 fund:

The Spotify Engineering Blog provides  insights, technical deep dives, and behind-the-scenes stories from the engineering team at Spotify. Covering a wide range of topics, including backend systems, data processing pipelines, and frontend architecture, the blog offers a glimpse into the technology stack and engineering practices used to power one of the world's leading music streaming platforms. Developers can learn about scalable infrastructure solutions, innovative engineering techniques, and best practices for building high-performance software systems. By following the Spotify Engineering Blog, developers can gain inspiration, knowledge, and practical insights to apply to their own projects and endeavors.

Spotify Labs

Spotify's 2025 FOSS Fund awarded €70,000 total to three open source projects: FFmpeg (€30,000) for multimedia processing infrastructure, Mock Service Worker/MSW (€15,000) for JavaScript API mocking, and Xiph.org Foundation (€25,000) for audio codecs like Opus and FLAC. FFmpeg will use funds for hardware, conference travel, and development. MSW's sole maintainer Artem Zakharchenko used previous funds for living expenses while working on major architectural improvements. Xiph.org continues receiving annual support for maintaining critical audio infrastructure that powers Spotify's delivery. All three projects rely heavily on volunteer contributors and face ongoing sustainability challenges despite their widespread industry adoption.

Congratulations to the recipients of the 2025 Spotify FOSS Fund