GitHub Fund is a dedicated venture capital vehicle focused on open source builders, launched in partnership with Microsoft's venture fund M12. It invests in pre-seed and seed stage open source-first startups across developer tools, AI, security, and cloud-native infrastructure.
50% of their portfolio is in Developer Tools. Their most common stage is seed (44% of deals). Average disclosed round size is $17.8M (across 28 rounds with reported amounts).
Portfolio
27
Fund Size
$10M
Top Stage
Seed
Last 12 Mo
1
Team
KC
Kevin Crosby
Lead, GitHub Fund
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
32 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Mem0 | Series A | $24M | Oct 2025 |
 Sourcetable | Seed | — | Mar 2025 |
 Flare | Series B | $15M | Jan 2025 |
 Not Diamond | Seed | $2.3M | Jul 2024 |
 The Browser Company | Series C | $50M | Mar 2024 |
 Codezero | Seed | $3.5M | Mar 2024 |
 Guardrails AI | Seed | $7.5M | Mar 2024 |
 Recraft | Series A | $12M | Jan 2024 |
 Appflowy | Seed | $6.4M | Nov 2023 |
 Cerbos Dev | Seed | $7.5M | Apr 2023 |
 Polywork | Series B | $28M | Sep 2022 |
 Retool | Series C | $20M | Jul 2022 |
 Strapi | Series B | $31M | Jun 2022 |
 Code Intelligence | Series A | $12M | Jun 2022 |
 Railway | Series A | $20M | May 2022 |
 Doppler | Series A | $20M | Apr 2022 |
 StackBlitz | Seed | $7.9M | Apr 2022 |
| Retool | Series C | — | Jan 2022 |
 EdgeDB | Series A | $15M | Jan 2022 |
 Mondoo | Series A | — | Oct 2021 |
 Nextmv | Series A | $8M | Feb 2021 |
 Jam | Seed | $3.5M | Oct 2020 |
| The Browser Company | Seed | $5M | Jul 2020 |
 Weights & Biases | Series B | $15M | May 2019 |
 Atomic Semi | Seed | $15M | — |
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Top Co-Investors
Y Combinator7 shared
GV4 shared
Stripe3 shared
Sequoia Capital3 shared
OpenAI Startup Fund3 shared
Peak XV Partners3 shared
Accel3 shared
Figma Ventures3 shared
Coatue Management LLC2 shared
BOND2 shared
Madrona Venture Group2 shared
Vercel2 shared
Zetta Venture Partners2 shared
Bloomberg Beta2 shared
Factory2 shared
Pear VC2 shared
MongoDB Ventures2 shared
Red Hat2 shared
CRV2 shared
Datadog2 shared
Last updated: 20 October 2026