Investor Lists

VC firms backing Open Source

Updated 7 November 2026

VC firms we have observed in an open Source round in the last two years.

See all 114 →The top 25
114investors on the listNo change this week
4,292cheques in 12 months+3% against the market
$17Mmedian round they joined+106% against the market median
92%wrote a cheque in 12 months
70%have led a round

The Top 25

Ordered by cheques observed, never by anything anyone paid for

Deploying now (25)

  1. 1Sequoia CapitalDeploying nowVC firm · United States2,099$35Mmedian roundNov 2026last seen
  2. 2Andreessen HorowitzDeploying nowVC firm · United States1,661$27Mmedian roundNov 2026last seen
  3. 3New Enterprise AssociatesDeploying nowVC firm · United States1,610$34Mmedian roundOct 2026last seen
  4. 4Alumni VenturesDeploying nowVC firm · United States1,598$12Mmedian roundNov 2026last seen
  5. 5General CatalystDeploying nowVC firm · United States1,387$27Mmedian roundNov 2026last seen
  6. 6SV AngelDeploying nowVC firm · United States1,349$18Mmedian roundOct 2026last seen
  7. 7AccelDeploying nowVC firm · United States1,341$32Mmedian roundNov 2026last seen
  8. 8Lightspeed Venture PartnersDeploying nowVC firm · United States1,341$35Mmedian roundNov 2026last seen
  9. 9Khosla VenturesDeploying nowVC firm · United States1,128$26Mmedian roundNov 2026last seen
  10. 10Bessemer Venture PartnersDeploying nowVC firm · United States1,038$30Mmedian roundNov 2026last seen
  11. 11Index VenturesDeploying nowVC firm · United Kingdom1,027$31Mmedian roundNov 2026last seen
  12. 12Tiger Global ManagementDeploying nowVC firm · United States773$47Mmedian roundNov 2026last seen
  13. 13Insight PartnersDeploying nowVC firm · United States765$40Mmedian roundOct 2026last seen
  14. 14Menlo VenturesDeploying nowVC firm · United States740$37Mmedian roundOct 2026last seen
  15. 15FelicisDeploying nowVC firm · United States640$20Mmedian roundNov 2026last seen
  16. 16CRVDeploying nowVC firm · United States588$20Mmedian roundOct 2026last seen
  17. 17BenchmarkDeploying nowVC firm · United States587$30Mmedian roundOct 2026last seen
  18. 18FlybridgeDeploying nowVC firm · United States534$5Mmedian roundSept 2026last seen
  19. 19Goodwater CapitalDeploying nowVC firm · United States526$4.1Mmedian roundSept 2026last seen
  20. 20Bain Capital VenturesDeploying nowVC firm · United States524$27Mmedian roundNov 2026last seen
  21. 21SeedcampDeploying nowVC firm · United Kingdom519$5Mmedian roundNov 2026last seen
  22. 22Founder CollectiveDeploying nowVC firm · United States502$8Mmedian roundSept 2026last seen
  23. 23HSGDeploying nowVC firm · Hong Kong SAR China498$31Mmedian roundOct 2026last seen
  24. 248VCDeploying nowVC firm · United States497$23Mmedian roundOct 2026last seen
  25. 25B CapitalDeploying nowVC firm · United States495$14Mmedian roundOct 2026last seen
89 more on this list

All 114 are in the app, with filters for stage, sector and market. A free account shows 10 per search, Pro up to 1,000.

See the whole list →

Quick answers about VC firms backing Open Source

Who are the most active VC firms backing Open Source?

By cheques observed, the most active are Sequoia Capital, Andreessen Horowitz, New Enterprise Associates, Alumni Ventures and General Catalyst.

How many VC firms backing Open Source are there?

114 are on record. 92% made an investment in the last 12 months and 70% have led a round.

Which stages do VC firms backing Open Source back?

Of the rounds with a named stage in the last 12 months, mostly Series A (27%) and Seed (26%).

How big are the rounds VC firms backing Open Source join?

The typical (median) round among the leading investors here is $27M.

Which sectors do VC firms backing Open Source back most?

In the last 12 months, mostly AI, Fintech and Healthcare.

Which VC firms backing Open Source lead the most rounds?

Andreessen Horowitz (114 led), Accel (103 led) and General Catalyst (97 led).

Where are VC firms backing Open Source based?

Most of the leading investors here are based in the United States (22 of the top 25); the rest in the United Kingdom and Hong Kong SAR China.

What have VC firms backing Open Source invested in recently?

Recent rounds include Thinking Machines Lab (Other, Nov 2026, with Accel), Harbinger (Series D+, Nov 2026, with Tiger Global Management) and Siggy (Pre-seed, Nov 2026, with Village Global).

Built from the rounds we watched, refreshed every night. How we count · Report a correction