# Series C developer Tools investors (2026 list)

> 110 series C developer Tools investors, 92% active in the last 12 months. Led by Y Combinator, Sequoia Capital, Alumni Ventures. Ranked by what they funded.

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

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

# Series C developer Tools investors

Updated 7 November 2026

Firms we have watched take part in a Series C 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 110 *→*](https://millionrounds.com/login?join=1&next=%2Fapp%2Finvestor-lists%2Fseries-c-developer-tools-investors)The top 25

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

**4,598** cheques in 12 months *+1%* against the market

**$38M** median round they joined *+369%* against the market median

**92%** wrote a cheque in 12 months

**68%** 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 [Sequoia Capital](https://millionrounds.com/fund/sequoia-capital) *Deploying now* VC firm · United States **2,099** **$35M** median round **Nov 2026** last seen
- 3 [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
- 4 [General Catalyst](https://millionrounds.com/fund/general-catalyst) *Deploying now* VC firm · United States **1,387** **$27M** median round **Nov 2026** last seen
- 5 [Accel](https://millionrounds.com/fund/accel) *Deploying now* VC firm · United States **1,341** **$32M** median round **Nov 2026** last seen
- 6 [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
- 7 [Bpifrance](https://millionrounds.com/fund/bpifrance) *Deploying now* Government · France **1,151** **$4.5M** median round **Oct 2026** last seen
- 8 [Khosla Ventures](https://millionrounds.com/fund/khosla-ventures) *Deploying now* VC firm · United States **1,128** **$26M** median round **Nov 2026** last seen
- 9 [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
- 10 [Index Ventures](https://millionrounds.com/fund/index-ventures) *Deploying now* VC firm · United Kingdom **1,027** **$31M** median round **Nov 2026** last seen
- 11 [First Round Capital](https://millionrounds.com/fund/first-round-capital) *Deploying now* VC firm · United States **807** **$18M** median round **Oct 2026** last seen
- 12 [BoxGroup](https://millionrounds.com/fund/boxgroup) *Deploying now* VC firm · United States **773** **$18M** median round **Nov 2026** last seen
- 13 [Tiger Global Management](https://millionrounds.com/fund/tiger-global-management) *Deploying now* VC firm · United States **773** **$47M** median round **Nov 2026** last seen
- 14 [Insight Partners](https://millionrounds.com/fund/insight-venture-partners) *Deploying now* VC firm · United States **765** **$40M** median round **Oct 2026** last seen
- 15 [Menlo Ventures](https://millionrounds.com/fund/menlo-ventures) *Deploying now* VC firm · United States **740** **$37M** median round **Oct 2026** last seen
- 16 [Antler](https://millionrounds.com/fund/antler) *Deploying now* VC firm · United Kingdom **729** **$1M** median round **Nov 2026** last seen
- 17 [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) *Deploying now* Corporate VC · United States **649** **$26M** median round **Nov 2026** last seen
- 18 [CRV](https://millionrounds.com/fund/crv) *Deploying now* VC firm · United States **588** **$20M** median round **Oct 2026** last seen
- 19 [Tengxun Touzi](https://millionrounds.com/fund/tengxun-touzi) *Deploying now* VC firm · China **553** **$50M** median round **Nov 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 [Madrona Venture Group](https://millionrounds.com/fund/madrona) *Deploying now* VC firm · United States **435** **$14M** median round **Nov 2026** last seen
- 22 [Union Square Ventures](https://millionrounds.com/fund/union-square-ventures) *Deploying now* VC firm · United States **407** **$17M** median round **Nov 2026** last seen
- 23 [Balderton Capital](https://millionrounds.com/fund/balderton-capital) *Deploying now* VC firm · United Kingdom **368** **$30M** median round **Oct 2026** last seen
- 24 [FundersClub](https://millionrounds.com/fund/fundersclub) *Deploying now* VC firm · United States **348** **$4.8M** median round **Jul 2026** last seen
- 25 [M12](https://millionrounds.com/fund/m12) *Deploying now* Corporate VC · United States **300** **$30M** median round **Oct 2026** last seen

**85 more on this list**

All 110 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%2Fseries-c-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 **[Ocient](https://millionrounds.com/company/ocient)** Series C · $100M *With* [In-Q-Tel](https://millionrounds.com/fund/iqt)
- **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 **[T-Therapeutics](https://millionrounds.com/company/t-therapeutics)** Series B · $133M *With* [Tengxun Touzi](https://millionrounds.com/fund/tengxun-touzi)
- **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)

## Stages This Year

3,237 rounds

- Venture **19%**
- Series A **17%**
- Seed **17%**
- Pre-seed **11%**
- Series B **10%**
- Other **26%**

## What They Backed

Sectors, last 12 months

- AI **1,650**
- Fintech **226**
- Big Data & Analytics **187**
- Healthcare **163**
- Biotech **146**
- Cybersecurity **123**

## Cheques by Quarter

Led Joined

1,120 Q1 25

1,195 Q2 25

1,278 Q3 25

1,366 Q4 25

1,414 Q1 26

1,227 Q2 26

1,094 Q3 26

292 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
- The Art of Agile Development: Pragmatic Guide to Agile Software Development James Shore · 2007 3.98 from 918 ratings on Goodreads Developer tools and open source About the book The Art of Agile Development contains practical guidance for anyone considering or applying agile development for building valuable software. Plenty of books describe what agile development is or why it helps software projects succeed, but very few combine information for… On AmazonListen on Audible

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

As an Amazon Associate we earn from qualifying purchases.

## Quick answers about series C developer Tools investors

### Who are the most active series C developer Tools investors?

By cheques observed, the most active are Y Combinator, Sequoia Capital, Alumni Ventures, General Catalyst and Accel.

### How many series C developer Tools investors are there?

110 are on record. 92% made an investment in the last 12 months and 68% have led a round.

### Which stages do series C developer Tools investors back?

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

### How big are the rounds series C developer Tools investors join?

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

### Which sectors do series C developer Tools investors back most?

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

### Which series C developer Tools investors lead the most rounds?

Accel (103 led), General Catalyst (97 led) and Sequoia Capital (91 led).

### Where are series C developer Tools investors based?

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

### What have series C developer Tools investors invested in recently?

Recent rounds include LionBio Therapeutics (Pre-seed, Nov 2026, with South Park Commons), Ocient (Series C, Nov 2026, with In-Q-Tel) and Thinking Machines Lab (Other, Nov 2026, with Accel).

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