# Y Combinator's Collaboration Tools Investments: 11 Startups in Its Portfolio (2026)

> The 11 Collaboration Tools startups Y Combinator has backed, by stage: $65M raised between them. From the rounds we track; updated nightly.

Source: https://millionrounds.com/portfolio-maps/y-combinator-collaboration-tools-portfolio (Millionrounds; every figure on the page links to its filing or article)

## Pre-seed and seed

7

- [*S* Sorted](https://millionrounds.com/company/sorted)
- [Magma](https://millionrounds.com/company/magma)
- [*T* Tella](https://millionrounds.com/company/tella)
- [Screenhero](https://millionrounds.com/company/screenhero)
- [Berry](https://millionrounds.com/company/berry)
- [Rapportive](https://millionrounds.com/company/rapportive)
- [TeamNote](https://millionrounds.com/company/teamnote)

## Stage not reported

4

- [Omnidoc](https://millionrounds.com/company/omnidoc)
- [*I* Index](https://millionrounds.com/company/index)
- [Zeplin](https://millionrounds.com/company/zeplin)
- [Auctor](https://millionrounds.com/company/auctor)

## Segment by segment

### Pre-seed and seed

7 startups · $53M raised

- [*S* **Sorted**](https://millionrounds.com/company/sorted) United Kingdom $41M
- [**Magma**](https://millionrounds.com/company/magma) MAGMA is a renewable energy company that installs and maintains solar systems. United States $5.5M
- [*T* **Tella**](https://millionrounds.com/company/tella) Connecting support and product teams. Netherlands $2.1M
- [**Screenhero**](https://millionrounds.com/company/screenhero) Screenhero lets you screen share any application with anyone, no matter where they are. United States $1.8M
- [**Berry**](https://millionrounds.com/company/berry) Berry's AI CSM helps SaaS companies train/onboard customers at scale United States $1.7M
- [**Rapportive**](https://millionrounds.com/company/rapportive) Rapportive shows you everything about your contacts right inside your inbox. United States $1.0M
- [**TeamNote**](https://millionrounds.com/company/teamnote) TeamNote is a cloud based mobile collaboration tool which helps corporations to unleash the productivity of their mobile workforce. Hong Kong SAR China $161K

### Stage not reported

4 startups · $12M raised

- [**Omnidoc**](https://millionrounds.com/company/omnidoc) Omnidoc is a Paris-based startup founded in 2019, focused on enhancing healthcare through digital solutions. France $6.3M
- [*I* **Index**](https://millionrounds.com/company/index) Australia $3.5M
- [**Zeplin**](https://millionrounds.com/company/zeplin) Zeplin is a design delivery platform founded in 2014 that connects UI designers and frontend developers. United States $1.3M
- [**Auctor**](https://millionrounds.com/company/auctor) Auctor is an AI startup founded in 2025, based in New York, with an additional office in San Francisco. United States $500K

**How this map is made.** Every startup here works in Collaboration Tools and has raised money in a round we track that names Y Combinator as an investor. Each sits under the stage of its latest round. Rebuilt nightly; updated 15 November 2026.

## More portfolio maps

[All portfolios](https://millionrounds.com/portfolio-maps)

[Sector portfolio **Y Combinator's AI portfolio** 1,143 startups · $44B](https://millionrounds.com/portfolio-maps/y-combinator-ai-portfolio)[Sector portfolio **Y Combinator's Fintech portfolio** 338 startups · $24B](https://millionrounds.com/portfolio-maps/y-combinator-fintech-portfolio)[Sector portfolio **Y Combinator's Big Data & Analytics portfolio** 201 startups · $3.4B](https://millionrounds.com/portfolio-maps/y-combinator-big-data-analytics-portfolio)[Sector portfolio **Y Combinator's Healthtech portfolio** 150 startups · $4.2B](https://millionrounds.com/portfolio-maps/y-combinator-healthtech-portfolio)[Sector portfolio **Y Combinator's IT Services portfolio** 148 startups · $840M](https://millionrounds.com/portfolio-maps/y-combinator-it-services-portfolio)[Sector portfolio **Y Combinator's Web3 & Crypto portfolio** 139 startups · $7.4B](https://millionrounds.com/portfolio-maps/y-combinator-web3-crypto-portfolio)

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