# Seed developer Tools investors (2026 list)

> 235 seed developer Tools investors, 88% active in the last 12 months. Led by Y Combinator, 500 Global, Sequoia Capital. Ranked by what they funded.

Source: https://millionrounds.com/lists/seed-developer-tools-investors (Millionrounds; every figure on the page links to its filing or article)

[Investor Lists](https://millionrounds.com/lists)

# Seed developer Tools investors

Updated 7 November 2026

Firms we have watched take part in a seed round raised by a developer Tools company in the last two years. Both the stage and the sector are what they did, not what their website says.

[See all 235 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fseed-developer-tools-investors)The top 25

**235** investors on the list *+26* this week

**5,833** cheques in 12 months *-5%* against the market

**$8M** median round they joined *+0%* against the market median

**88%** wrote a cheque in 12 months

**37%** have led a round

## The Top 25

Ordered by cheques observed, never by anything anyone paid for

Deploying now (25)

- 1 [Y Combinator](https://millionrounds.com/fund/y-combinator) *Deploying now* Accelerator · United States **6,412** **$3M** median round **Oct 2026** last seen
- 2 [500 Global](https://millionrounds.com/fund/500-startups) *Deploying now* Angel · United States **2,140** **$3.6M** median round **Oct 2026** last seen
- 3 [Sequoia Capital](https://millionrounds.com/fund/sequoia-capital) *Deploying now* VC firm · United States **2,099** **$35M** median round **Nov 2026** last seen
- 4 [Andreessen Horowitz](https://millionrounds.com/fund/andreessen-horowitz) *Deploying now* VC firm · United States **1,661** **$27M** median round **Nov 2026** last seen
- 5 [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
- 6 [Plug and Play](https://millionrounds.com/fund/plug-and-play) *Deploying now* Accelerator · United States **1,561** **$5M** median round **Nov 2026** last seen
- 7 [General Catalyst](https://millionrounds.com/fund/general-catalyst) *Deploying now* VC firm · United States **1,387** **$27M** median round **Nov 2026** last seen
- 8 [SV Angel](https://millionrounds.com/fund/sv-angel) *Deploying now* VC firm · United States **1,349** **$18M** median round **Oct 2026** last seen
- 9 [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
- 10 [Bpifrance](https://millionrounds.com/fund/bpifrance) *Deploying now* Government · France **1,151** **$4.5M** median round **Oct 2026** last seen
- 11 [Founders Fund](https://millionrounds.com/fund/founders-fund) *Deploying now* VC firm · United States **1,122** **$15M** median round **Oct 2026** last seen
- 12 [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
- 13 [Index Ventures](https://millionrounds.com/fund/index-ventures) *Deploying now* VC firm · United Kingdom **1,027** **$31M** median round **Nov 2026** last seen
- 14 [Kima Ventures](https://millionrounds.com/fund/kima-ventures) *Deploying now* VC firm · France **859** **$4.2M** median round **Nov 2026** last seen
- 15 [BoxGroup](https://millionrounds.com/fund/boxgroup) *Deploying now* VC firm · United States **773** **$18M** median round **Nov 2026** last seen
- 16 [Menlo Ventures](https://millionrounds.com/fund/menlo-ventures) *Deploying now* VC firm · United States **740** **$37M** median round **Oct 2026** last seen
- 17 [Felicis](https://millionrounds.com/fund/felicis-ventures) *Deploying now* VC firm · United States **640** **$20M** median round **Nov 2026** last seen
- 18 [Liquid 2 Ventures](https://millionrounds.com/fund/liquid-2-ventures) *Deploying now* VC firm · United States **636** **$7M** median round **Oct 2026** last seen
- 19 [CRV](https://millionrounds.com/fund/crv) *Deploying now* VC firm · United States **588** **$20M** median round **Oct 2026** last seen
- 20 [Pioneer Fund](https://millionrounds.com/fund/pioneer-fund-2) *Deploying now* Private equity · United States **551** **$2.9M** median round **Nov 2026** last seen
- 21 [U.S. Venture Partners](https://millionrounds.com/fund/u-s-venture-partners-usvp) *Deploying now* VC firm · United States **535** **$15M** median round **Nov 2026** last seen
- 22 [Goodwater Capital](https://millionrounds.com/fund/goodwater-capital) *Deploying now* VC firm · United States **526** **$4.1M** median round **Sept 2026** last seen
- 23 [Seedcamp](https://millionrounds.com/fund/seedcamp) *Deploying now* VC firm · United Kingdom **519** **$5M** median round **Nov 2026** last seen
- 24 [Mitsubishi UFJ Capital](https://millionrounds.com/fund/mitsubishi-ufj-capital-co-ltd) *Deploying now* VC firm · Japan **493** **$4.7M** median round **Nov 2026** last seen
- 25 [Coinbase Ventures](https://millionrounds.com/fund/coinbase) *Deploying now* Corporate VC · United States **465** **$9.8M** median round **Nov 2026** last seen

**210 more on this list**

All 235 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%2Fseed-developer-tools-investors)

## The Newest Cheques

Rounds this list's investors joined most recently

- **7** Nov **[LionBio Therapeutics](https://millionrounds.com/company/lionbio-therapeutics)** Pre-seed · $6M *With* [South Park Commons](https://millionrounds.com/fund/south-park-commons)
- **6** Nov **[Physicl](https://millionrounds.com/company/physicl)** Seed · $10M *With* [U.S. Venture Partners](https://millionrounds.com/fund/u-s-venture-partners-usvp)
- **5** Nov **[Soter Insure](https://millionrounds.com/company/soter-insure)** Series B *With* [Coinbase Ventures](https://millionrounds.com/fund/coinbase)
- **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 **[Nyquis](https://millionrounds.com/company/nyquis)** Seed · $6.3M *Led by* [South Park Commons](https://millionrounds.com/fund/south-park-commons)
- **5** Nov **[Uranium Digital](https://millionrounds.com/company/uranium-digital)** Series A · $17M *Led by* [Blockchain Capital](https://millionrounds.com/fund/blockchain-capital)

## Stages This Year

3,778 rounds

- Seed **21%**
- Venture **19%**
- Series A **18%**
- Pre-seed **11%**
- Series B **9%**
- Other **22%**

## What They Backed

Sectors, last 12 months

- AI **1,879**
- Fintech **261**
- Big Data & Analytics **203**
- Healthcare **194**
- Biotech **158**
- Financial Services **147**

## Cheques by Quarter

Led Joined

1,565 Q1 25

1,567 Q2 25

1,742 Q3 25

1,873 Q4 25

1,761 Q1 26

1,655 Q2 26

1,258 Q3 26

409 Q4 26

The last bar is the quarter still running.

## Lists Like This

- [Seed AI investors 2,922](https://millionrounds.com/lists/seed-ai-investors)
- [Series A AI investors 2,490](https://millionrounds.com/lists/series-a-ai-investors)
- [Series B AI investors 1,557](https://millionrounds.com/lists/series-b-ai-investors)
- [Pre-seed AI investors 1,286](https://millionrounds.com/lists/pre-seed-ai-investors)
- [Growth AI investors 1,186](https://millionrounds.com/lists/growth-ai-investors)
- [Series A fintech investors 950](https://millionrounds.com/lists/series-a-fintech-investors)
- [Series C AI investors 930](https://millionrounds.com/lists/series-c-ai-investors)
- [Seed fintech investors 925](https://millionrounds.com/lists/seed-fintech-investors)
- [Series A biotech investors 650](https://millionrounds.com/lists/series-a-biotech-investors)

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

## Reading for founders in developer tools and open source

- Dreaming in Code: Two Dozen Programmers, Three Years, 4,732 Bugs, and One Quest for Transcendent Software Scott Rosenberg · 2007 3.71 from 3,101 ratings on Goodreads Developer tools and open source About the book Their story takes us through a maze of dead ends and exhilarating breakthroughs as they and their colleagues wrestle not only with the abstraction of code but with the unpredictability of human behavior, especially their own. Along the way, we encounter black holes, turtles,… On AmazonListen on Audible
- Implementing Domain-Driven Design Vernon Vaughn · 2013 4.05 from 1,292 ratings on Goodreads Developer tools and open source About the book “For software developers of all experience levels looking to improve their results, and design and implement domain-driven enterprise applications consistently with the best current state of professional practice, Implementing Domain-Driven Design will impart a treasure trove of… On AmazonListen on Audible
- Practices of an Agile Developer Venkat Subramaniam · 2006 3.88 from 1,001 ratings on Goodreads Developer tools and open source About the book Want to be a better developer? This books collects the personal habits, ideas, and approaches of successful agile software developers and presents them in a series of short, easy-to-digest tips. This isn't academic fluff; follow these ideas and you'll show yourself, your… On AmazonListen on Audible
- Developer Hegemony: The Future of Labor Erik Dietrich · 2017 4.02 from 475 ratings on Goodreads Developer tools and open source About the book It’s been said that software is eating the planet. The modern economy, the world itself, relies on technology. Demand for the people who can produce it far outweighs the supply. So why do developers occupy largely subordinate roles in the corporate structure? Developer Hegemony… On AmazonListen on Audible

More books for founders and investors on the [Reading List](https://millionrounds.com/reading-list?role=founder&model=developer&stage=seed).

As an Amazon Associate we earn from qualifying purchases.

## Quick answers about seed developer Tools investors

### Who are the most active seed developer Tools investors?

By cheques observed, the most active are Y Combinator, 500 Global, Sequoia Capital, Andreessen Horowitz and Alumni Ventures.

### How many seed developer Tools investors are there?

235 are on record. 88% made an investment in the last 12 months and 37% have led a round.

### Which stages do seed developer Tools investors back?

Of the rounds with a named stage in the last 12 months, mostly Seed (29%) and Series A (24%).

### How big are the rounds seed developer Tools investors join?

The typical (median) round among the leading investors here is $15M.

### Which sectors do seed developer Tools investors back most?

In the last 12 months, mostly AI, Fintech and Big Data & Analytics.

### Which seed developer Tools investors lead the most rounds?

Andreessen Horowitz (114 led), General Catalyst (97 led) and Sequoia Capital (91 led).

### Where are seed developer Tools investors based?

Most of the leading investors here are based in the United States (20 of the top 25); the rest in France and the United Kingdom.

### What have seed developer Tools investors invested in recently?

Recent rounds include LionBio Therapeutics (Pre-seed, Nov 2026, with South Park Commons), Physicl (Seed, Nov 2026, with U.S. Venture Partners) and Soter Insure (Series B, Nov 2026, with Coinbase Ventures).

Built from the rounds we watched, refreshed every night. [How we count](https://millionrounds.com/methodology) · [Report a correction](https://millionrounds.com/corrections)