# VC firms backing Open Source (2026 list)

> 114 VC firms backing Open Source, 92% active in the last 12 months. Led by Sequoia Capital, Andreessen Horowitz, New Enterprise Associates.

Source: https://millionrounds.com/lists/vc-firms-open-source (Millionrounds; every figure on the page links to its filing or article)

[Investor Lists](https://millionrounds.com/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 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fvc-firms-open-source)The top 25

**114** investors on the list No change this week

**4,292** cheques in 12 months *+3%* against the market

**$17M** median 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 [Sequoia Capital](https://millionrounds.com/fund/sequoia-capital) *Deploying now* VC firm · United States **2,099** **$35M** median round **Nov 2026** last seen
- 2 [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) *Deploying now* VC firm · United States **1,661** **$27M** median round **Nov 2026** last seen
- 3 [New Enterprise Associates](https://millionrounds.com/fund/new-enterprise-associates) *Deploying now* VC firm · United States **1,610** **$34M** median round **Oct 2026** last seen
- 4 [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) *Deploying now* VC firm · United States **1,598** **$12M** median round **Nov 2026** last seen
- 5 [General Catalyst](https://millionrounds.com/fund/general-catalyst) *Deploying now* VC firm · United States **1,387** **$27M** median round **Nov 2026** last seen
- 6 [SV Angel](https://millionrounds.com/fund/sv-angel) *Deploying now* VC firm · United States **1,349** **$18M** median round **Oct 2026** last seen
- 7 [Accel](https://millionrounds.com/fund/accel) *Deploying now* VC firm · United States **1,341** **$32M** median round **Nov 2026** last seen
- 8 [Lightspeed Venture Partners](https://millionrounds.com/fund/lightspeed-venture-partners) *Deploying now* VC firm · United States **1,341** **$35M** median round **Nov 2026** last seen
- 9 [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) *Deploying now* VC firm · United States **1,128** **$26M** median round **Nov 2026** last seen
- 10 [Bessemer Venture Partners](https://millionrounds.com/fund/bessemer-venture-partners) *Deploying now* VC firm · United States **1,038** **$30M** median round **Nov 2026** last seen
- 11 [Index Ventures](https://millionrounds.com/fund/index-ventures) *Deploying now* VC firm · United Kingdom **1,027** **$31M** median round **Nov 2026** last seen
- 12 [Tiger Global Management](https://millionrounds.com/fund/tiger-global-management) *Deploying now* VC firm · United States **773** **$47M** median round **Nov 2026** last seen
- 13 [Insight Partners](https://millionrounds.com/fund/insight-venture-partners) *Deploying now* VC firm · United States **765** **$40M** median round **Oct 2026** last seen
- 14 [Menlo Ventures](https://millionrounds.com/fund/menlo-ventures) *Deploying now* VC firm · United States **740** **$37M** median round **Oct 2026** last seen
- 15 [Felicis](https://millionrounds.com/fund/felicis-ventures) *Deploying now* VC firm · United States **640** **$20M** median round **Nov 2026** last seen
- 16 [CRV](https://millionrounds.com/fund/crv) *Deploying now* VC firm · United States **588** **$20M** median round **Oct 2026** last seen
- 17 [Benchmark](https://millionrounds.com/fund/benchmark) *Deploying now* VC firm · United States **587** **$30M** median round **Oct 2026** last seen
- 18 [Flybridge](https://millionrounds.com/fund/flybridge) *Deploying now* VC firm · United States **534** **$5M** median round **Sept 2026** last seen
- 19 [Goodwater Capital](https://millionrounds.com/fund/goodwater-capital) *Deploying now* VC firm · United States **526** **$4.1M** median round **Sept 2026** last seen
- 20 [Bain Capital Ventures](https://millionrounds.com/fund/bain-capital-ventures) *Deploying now* VC firm · United States **524** **$27M** median round **Nov 2026** last seen
- 21 [Seedcamp](https://millionrounds.com/fund/seedcamp) *Deploying now* VC firm · United Kingdom **519** **$5M** median round **Nov 2026** last seen
- 22 [Founder Collective](https://millionrounds.com/fund/founder-collective) *Deploying now* VC firm · United States **502** **$8M** median round **Sept 2026** last seen
- 23 [HSG](https://millionrounds.com/fund/hsg) *Deploying now* VC firm · Hong Kong SAR China **498** **$31M** median round **Oct 2026** last seen
- 24 [8VC](https://millionrounds.com/fund/8vc) *Deploying now* VC firm · United States **497** **$23M** median round **Oct 2026** last seen
- 25 [B Capital](https://millionrounds.com/fund/b-capital) *Deploying now* VC firm · United States **495** **$14M** median round **Oct 2026** last 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 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fvc-firms-open-source)

## The Newest Cheques

Rounds this list's investors joined most recently

- **6** Nov **[Thinking Machines Lab](https://millionrounds.com/company/thinking-machines-lab)** Other · $5B *Led by* [Accel](https://millionrounds.com/fund/accel)
- **6** Nov **[Harbinger](https://millionrounds.com/company/harbinger)** Series D+ · $240M *Led by* [Tiger Global Management](https://millionrounds.com/fund/tiger-global-management)
- **5** Nov **[Siggy](https://millionrounds.com/company/siggy)** Pre-seed · $6M *Led by* [Village Global](https://millionrounds.com/fund/village-global-2)
- **5** Nov **[firmly](https://millionrounds.com/company/firmly)** Series A · $15M *With* [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund)
- **5** Nov **[Uranium Digital](https://millionrounds.com/company/uranium-digital)** Series A · $17M *Led by* [Blockchain Capital](https://millionrounds.com/fund/blockchain-capital)
- **5** Nov **[Granit](https://millionrounds.com/company/granit)** Seed · $6M *Led by* [Seedcamp](https://millionrounds.com/fund/seedcamp)

## Stages This Year

2,707 rounds

- Series A **20%**
- Seed **20%**
- Venture **16%**
- Series B **12%**
- Series C **7%**
- Other **26%**

## What They Backed

Sectors, last 12 months

- AI **1,379**
- Fintech **217**
- Healthcare **161**
- Biotech **145**
- Big Data & Analytics **139**
- Robotics **127**

## Cheques by Quarter

Led Joined

1,021 Q1 25

1,082 Q2 25

1,165 Q3 25

1,320 Q4 25

1,327 Q1 26

1,124 Q2 26

1,001 Q3 26

331 Q4 26

The last bar is the quarter still running.

## Lists Like This

- [VC firms backing AI 4,329](https://millionrounds.com/lists/vc-firms-ai)
- [VC firms backing Fintech 1,856](https://millionrounds.com/lists/vc-firms-fintech)
- [VC firms backing Big Data & Analytics 1,248](https://millionrounds.com/lists/vc-firms-big-data)
- [VC firms backing Biotech 1,207](https://millionrounds.com/lists/vc-firms-biotech)
- [VC firms backing Robotics 1,098](https://millionrounds.com/lists/vc-firms-robotics)
- [VC firms backing Construction 1,025](https://millionrounds.com/lists/vc-firms-construction)
- [VC firms backing Energy 998](https://millionrounds.com/lists/vc-firms-energy)
- [PE firms backing AI 956](https://millionrounds.com/lists/pe-firms-ai)
- [VC firms backing Cybersecurity 950](https://millionrounds.com/lists/vc-firms-cybersecurity)

[All investor lists *→*](https://millionrounds.com/lists)

## 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](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections)