Top 10 Companies Sponsoring Open Source Projects in 2026

What makes this list different: we focused specifically on financial sponsorship of open source projects, not code contributions or open-sourcing internal tools. Writing code for a project you use is self-interest. Writing a check for a project you may never touch is something else entirely.

1. BairesDev

Sponsorship Model: Direct project sponsorship via Open Collective | Total Contributed: $70,000+

BairesDev is the only software development services company on this list, and that's exactly why they're at the top. While every other company here sponsors open source as an extension of products they sell, BairesDev does it as a service company whose engineers use these tools daily to build software for clients.

Their sponsorship portfolio targets foundational developer tools and frameworks: Chakra UI (React component library), Gitea (self-hosted Git service), JSdelivr (free CDN for open source), Ajv (JSON schema validator), and Bulma (CSS framework). These aren't vanity sponsorships of high-profile projects. They're the unglamorous dependencies that thousands of production applications rely on quietly.

BairesDev channels its funding through Open Collective, providing transparent, trackable financial support. For a company with over 4,000 engineers across Latin America, the US, and Europe, this investment reflects a deliberate commitment to the tools their development teams depend on every day.

For more on how software development companies contribute to the broader open source community, explore our directory of top-rated providers.

2. Google

Sponsorship Model: Foundation memberships, direct grants, program funding | Annual Sponsorship: $2M+ (2024)

Google's Open Source Programs Office (OSPO) provided over $2 million in sponsorships and membership fees to more than 40 open source projects and organizations in 2024 alone. Their sponsorship reaches across every major foundation: the Apache Software Foundation, Cloud Native Computing Foundation (CNCF), Eclipse Foundation, Linux Foundation, and Python Software Foundation, among others.

Beyond foundation dues, Google runs the longest-standing corporate open source program in existence: Google Summer of Code, now in its 20th year, which funded over 1,200 contributors across 195 organizations in its most recent cycle. They also contributed $1 million as the initial sponsor of the Linux Foundation's Secure Open Source (SOS) Rewards program, which disbursed $353K to critical projects before concluding its run.

3. Microsoft

Sponsorship Model: FOSS Fund (employee-nominated quarterly grants) | Quarterly Distribution: Up to $12,500

Microsoft's FOSS Fund, run by their Open Source Programs Office, distributes up to $12,500 per quarter across open source projects nominated and selected by Microsoft engineers. The program was originally structured as $10,000 monthly grants when it launched in 2020, then restructured to its current quarterly cadence. The core model hasn't changed: any Microsoft employee can nominate a project, and contributors vote on recipients.

The fund operates through GitHub Sponsors, creating a direct pipeline from corporate treasury to maintainer bank accounts. While the per-quarter amounts are modest compared to Google's spending, the program's influence extends beyond dollars: it inspired a wave of similar FOSS Funds across the industry, including at Bloomberg, Salesforce, and Sentry.

4. Spotify

Sponsorship Model: FOSS Fund (annual allocation to critical dependencies) | Annual Fund: €100,000

Spotify's FOSS Fund allocates €100,000 annually to open source projects that their engineering teams depend on. Their internal R&D community nominates projects, and a dedicated committee reviews submissions to distribute the budget across recipients.

What sets Spotify apart is the focus on critical dependencies: not trendy projects, but the libraries and tools that would cause production incidents if they disappeared. The 2025 recipients, announced in January 2026, continued this pattern of funding infrastructure that most developers take for granted.

5. Bloomberg

Sponsorship Model: FOSS Contributor Fund (quarterly employee-voted grants) | Per Grant: $10,000 (up to 3 per quarter)

Bloomberg launched its FOSS Contributor Fund in 2023, inspired by Indeed's pioneering model. Run as a partnership between their Open Source Program Office and Corporate Philanthropy department, the fund awards up to three grants of $10,000 each voting cycle.

Here's the twist: only Bloomberg employees who have personally contributed to open source get to vote. That creates a flywheel. Engineers are incentivized to contribute code so they can influence where sponsorship dollars flow. In the four years since launch, Bloomberg's model has been adopted by Microsoft, Johns Hopkins University, Salesforce, Zeiss, and others.

6. Sentry

Sponsorship Model: FOSS Fund + Open Source Pledge | Annual Giving: $375,000–$750,000

No company on this list spends more on open source than Sentry. Their FOSS Fund 155 initiative distributed $154,999.89 across 108 maintainers in a single round, and that was just the start. In 2024, Sentry distributed $750,000 to open source maintainers, roughly $5,500 per engineer on their team. In 2025, they distributed $375,000 as their primary annual allocation.

Beyond direct financial contributions, Sentry donates SaaS credits to open source projects (giving maintainers free access to error monitoring), sponsors conferences and meetups, and contributes patches to upstream projects. Their approach treats sponsorship as a multi-channel commitment rather than a single annual check. Sentry is also a founding member of the Open Source Pledge, committing to sustained annual funding.

7. Stripe

Sponsorship Model: Direct ongoing project sponsorship via GitHub Sponsors & Open Collective | Active Sponsorships: 11 projects

Since formalizing their open source sponsorship program in 2020, Stripe has funded 11 different projects on an ongoing basis. Their OSPO team gathered internal usage statistics to identify which open source projects were most critical to Stripe's infrastructure, then consulted engineers and spoke directly with maintainers about how to support them effectively.

Stripe's model is worth noting because it's relationship-driven. Rather than running a voting contest, they identify critical dependencies and build direct relationships with the people maintaining them. Funding flows through GitHub Sponsors and Open Collective, keeping contributions transparent and traceable.

8. Shopify

Sponsorship Model: GitHub Sponsors + strategic dependency funding

GitHub Sponsors is Shopify's primary vehicle for funding open source. Their strategy targets projects that directly impact developer experience, performance, and security across their platform.

Shopify has also open-sourced significant internal software tools for developers (toxiproxy, bootsnap, packwerk, tapioca, paquito, and maintenance_tasks), which serve as indirect contributions to the community. But their direct funding of external projects through GitHub Sponsors represents the sponsorship commitment that earns them a spot on this list.

9. Indeed

Sponsorship Model: FOSS Contributor Fund (pioneered the model) | Monthly Grant: $10,000

Indeed invented the FOSS Contributor Fund model in 2019, and it's the framework that Bloomberg, Salesforce, Microsoft, and others later adopted. Each month, Indeed selects an open source project to receive a $10,000 donation, with the selection made by employees who actively contribute to open source.

The elegance of Indeed's model is its dual incentive: it funds open source projects while simultaneously encouraging corporate engineers to contribute code. You can only vote if you contribute. This framework has become the de facto standard for corporate open source sponsorship programs, making Indeed's influence on open source far larger than their direct dollar contributions suggest.

10. Salesforce

Sponsorship Model: FOSS Fund (inspired by Indeed) | Quarterly Grant: $10,000

Salesforce adopted the FOSS Contributor Fund framework pioneered by Indeed, committing $10,000 every quarter to a project voted on by their open source contributors. The program runs through their Open Source Program Office, with every Salesforce employee who has contributed to open source eligible to nominate and vote on recipient projects.

Salesforce's implementation shows that the fund delivers more than money. It creates awareness within the company about which open source projects matter, and builds a culture where engineers see sponsorship as part of their professional responsibility.

The Bigger Picture

Three patterns emerge from this list:

1. Service companies are the exception, not the rule. BairesDev is the only software development services company here. The rest are product companies funding the infrastructure their products run on. When a service company sponsors open source, it signals a different kind of commitment, one driven by community responsibility rather than dependency management.

2. The FOSS Fund model is winning. Pioneered by Indeed in 2019 and adopted by Bloomberg, Microsoft, Salesforce, and Sentry, the employee-voted fund has become the standard corporate sponsorship framework. It solves two problems: which projects to fund (let engineers decide) and how to justify the spend (tie it to contributor engagement).

3. Transparency is non-negotiable. Every company on this list uses public channels — Open Collective, GitHub Sponsors, or published blog posts — to document their sponsorships. The era of vague "we support open source" claims without receipts is over.

For a full directory of software development companies and how they give back to the open source community, explore our rankings.