Y Combinator Breakthrough Companies

YC has been investing in the later stage rounds of our alumni since 2015. These are the high-growth companies that have received significant additional investment or more in funding from YC. (Learn more about how we compile these lists.)

Discover more YC companies in the Startup Directory and find jobs at the best YC startups on Work at a Startup.

NameRankCompany
Description
StatusBatchHQJobs
Stripestripe.com#1Economic infrastructure for the internet.S09San Francisco, CA, USA; RemoteApply
Instacartinstacart.com#2Marketplace for grocery delivery and pickupS12San Francisco, CA, USA; RemoteApply
DoorDashdoordash.com#3Restaurant delivery.PublicS13San Francisco, CA, USAApply
Coinbasecoinbase.com#4Buy, sell, and manage cryptocurrencies.PublicS12Remote; San Francisco, CA, USAApply
OpenSeaopensea.io#5OpenSea is the world’s leading peer-to-peer marketplace for NFTsW18San Francisco, CA, USA; New York, NY, USA; Menlo Park, CA, USA; RemoteApply
Fairefaire.com#6The global online platform empowering independent retail.W17San Francisco, CA, USA; London, England, United Kingdom; Waterloo, ON, Canada; RemoteApply
Brexbrex.com#7Business accounts, corporate cards, and spend management software.W17Remote; San Francisco, CA, USAApply
Deeldeel.com#8The all-in-one HR platform for global teams.W19Remote; San Francisco, CA, USAApply
Ripplingrippling.com#9Magically Simplify Your HR & ITW17San Francisco, CA, USA; RemoteApply
Gustogusto.com#10Provides growing businesses with everything to take care of their teamW12San Francisco, CA, USA; RemoteApply
GitLabgitlab.com#11A complete DevOps platform delivered as a single application.PublicW15Remote; San Francisco, CA, USAApply
Razorpayrazorpay.com#12India's leading financial platform for all things payments & banking…W15Bengaluru, KA, India; RemoteApply
Scale AIscale.com#13End-to-end solutions for the entire ML lifecycleS16San Francisco, CA, USA; RemoteApply
Fivetranfivetran.com#14The leader in automated data movementW13Oakland, CA, USA; RemoteApply
Rappirappi.com#15On-demand delivery and financial services for Latin America.W16Bogotá, Bogota, ColombiaApply
Checkrcheckr.com#16A new era of background checks.S14San Francisco, CA, USA; RemoteApply
Zapierzapier.com#17The easiest way to automate your work.S12Remote; Mountain View, CA, USAApply
Monzo Bankmonzo.com#18A bank as smart as your phone.London, England, United Kingdom; RemoteApply
Whatnotwhatnot.com#19Whatnot is the largest livestream shopping platform in the U.S.W20Remote; Los Angeles, CA, USAApply
Webflowwebflow.com#20Professional website design and publishing platform. S13San Francisco, CA, USA; RemoteApply
Convoyconvoy.com#21The world's most efficient digital freight network.Seattle, WA, USA; RemoteApply
Segmentsegment.com#22Software and APIs to collect, clean, and control customer data.ExitS11San Francisco, CA, USA; Remote
Ironcladironcladapp.com#23Digital contracting platform for legal teams. S15San Francisco, CA, USA; RemoteApply
Podiumpodium.com#24A communication, marketing, and payments platform for local…W16Lehi, UT, USA; RemoteApply
Growwgroww.in#25Investing made simple for everyone in India.W18Bengaluru, KA, India; Mumbai, MH, IndiaApply
Vantavanta.com#26Helps simplify and centralize security for organizations of all sizesW18San Francisco, CA, USA; New York, NY, USA; Sydney, NSW, Australia; Dublin, County Dublin, Ireland; RemoteApply
Pavepave.com#27Plan, communicate, and benchmark your compensation in real-time.S20San Francisco, CA, USA; New York, NY, USA; RemoteApply
Snapdocssnapdocs.com#28Snapdocs digitizes real estate closingsW14San Francisco, CA, USA; RemoteApply
Salt Securitysalt.security#29Protects organizations from getting breached through their APIs.W16Palo Alto, CA, USA; Tel Aviv-Yafo, Tel Aviv District, Israel; RemoteApply
Zipziphq.com#30The future of B2B spendS20San Francisco, CA, USA; RemoteApply
Boomboomsupersonic.com#31Affordable, profitable, and sustainable supersonic airplanesW16Centennial, CO, USA; RemoteApply
Zeptozeptonow.com#3210-Minute Grocery Delivery in IndiaW21MH, India; RemoteApply
Kalshikalshi.com#331st federally regulated exchange where people can trade on eventsW19New York, NY, USA; RemoteApply
Vouchvouch.us#34Insurance and risk management tools for startups and growth-stage…S19Remote; San Francisco, CA, USA; New York, NY, USA; Chicago, IL, USAApply
Loblob.com#35Lob is the only automation platform that transforms direct mail into…S13San Francisco, CA, USA; RemoteApply
Mattermostmattermost.com#36Secure Collaboration for Technical TeamsS12Remote; Palo Alto, CA, USAApply
RevenueCatrevenuecat.com#37A simple API for managing in-app subscriptionsS18Remote; San Francisco, CA, USAApply
Convictionalconvictional.com#38Onboard and integrate suppliers for dropship and marketplaceW19Toronto, ON, Canada; RemoteApply
Breadfastbreadfast.com#39Household needs, from bread to everything.S19Cairo, Cairo Governorate, Egypt; RemoteApply
PostHogposthog.com#40Open source product analytics, self-hosted or in the cloud.W20Remote; San Francisco, CA, USAApply

Economic infrastructure for the internet.

Status
HQ
San Francisco, CA, USA; Remote
Batch
S09

Marketplace for grocery delivery and pickup

Status
HQ
San Francisco, CA, USA; Remote
Batch
S12

Restaurant delivery.

Status
Public
HQ
San Francisco, CA, USA
Batch
S13

Buy, sell, and manage cryptocurrencies.

Status
Public
HQ
Remote; San Francisco, CA, USA
Batch
S12

OpenSea is the world’s leading peer-to-peer marketplace for NFTs

Status
HQ
San Francisco, CA, USA; New York, NY, USA; Menlo Park, CA, USA; Remote
Batch
W18

The global online platform empowering independent retail.

Status
HQ
San Francisco, CA, USA; London, England, United Kingdom; Waterloo, ON, Canada; Remote
Batch
W17

Business accounts, corporate cards, and spend management software.

Status
HQ
Remote; San Francisco, CA, USA
Batch
W17

The all-in-one HR platform for global teams.

Status
HQ
Remote; San Francisco, CA, USA
Batch
W19

Magically Simplify Your HR & IT

Status
HQ
San Francisco, CA, USA; Remote
Batch
W17

Provides growing businesses with everything to take care of their team

Status
HQ
San Francisco, CA, USA; Remote
Batch
W12

A complete DevOps platform delivered as a single application.

Status
Public
HQ
Remote; San Francisco, CA, USA
Batch
W15

India's leading financial platform for all things payments & banking…

Status
HQ
Bengaluru, KA, India; Remote
Batch
W15

End-to-end solutions for the entire ML lifecycle

Status
HQ
San Francisco, CA, USA; Remote
Batch
S16

The leader in automated data movement

Status
HQ
Oakland, CA, USA; Remote
Batch
W13

On-demand delivery and financial services for Latin America.

Status
HQ
Bogotá, Bogota, Colombia
Batch
W16

A new era of background checks.

Status
HQ
San Francisco, CA, USA; Remote
Batch
S14

The easiest way to automate your work.

Status
HQ
Remote; Mountain View, CA, USA
Batch
S12

A bank as smart as your phone.

Status
HQ
London, England, United Kingdom; Remote
Batch

Whatnot is the largest livestream shopping platform in the U.S.

Status
HQ
Remote; Los Angeles, CA, USA
Batch
W20

Professional website design and publishing platform.

Status
HQ
San Francisco, CA, USA; Remote
Batch
S13

The world's most efficient digital freight network.

Status
HQ
Seattle, WA, USA; Remote
Batch
22

Software and APIs to collect, clean, and control customer data.

Status
Exit
HQ
San Francisco, CA, USA; Remote
Batch
S11

Digital contracting platform for legal teams.

Status
HQ
San Francisco, CA, USA; Remote
Batch
S15

A communication, marketing, and payments platform for local…

Status
HQ
Lehi, UT, USA; Remote
Batch
W16

Investing made simple for everyone in India.

Status
HQ
Bengaluru, KA, India; Mumbai, MH, India
Batch
W18

Helps simplify and centralize security for organizations of all sizes

Status
HQ
San Francisco, CA, USA; New York, NY, USA; Sydney, NSW, Australia; Dublin, County Dublin, Ireland; Remote
Batch
W18

Plan, communicate, and benchmark your compensation in real-time.

Status
HQ
San Francisco, CA, USA; New York, NY, USA; Remote
Batch
S20

Snapdocs digitizes real estate closings

Status
HQ
San Francisco, CA, USA; Remote
Batch
W14

Protects organizations from getting breached through their APIs.

Status
HQ
Palo Alto, CA, USA; Tel Aviv-Yafo, Tel Aviv District, Israel; Remote
Batch
W16

The future of B2B spend

Status
HQ
San Francisco, CA, USA; Remote
Batch
S20

Affordable, profitable, and sustainable supersonic airplanes

Status
HQ
Centennial, CO, USA; Remote
Batch
W16

10-Minute Grocery Delivery in India

Status
HQ
MH, India; Remote
Batch
W21

1st federally regulated exchange where people can trade on events

Status
HQ
New York, NY, USA; Remote
Batch
W19

Insurance and risk management tools for startups and growth-stage…

Status
HQ
Remote; San Francisco, CA, USA; New York, NY, USA; Chicago, IL, USA
Batch
S19

Lob is the only automation platform that transforms direct mail into…

Status
HQ
San Francisco, CA, USA; Remote
Batch
S13

Secure Collaboration for Technical Teams

Status
HQ
Remote; Palo Alto, CA, USA
Batch
S12

A simple API for managing in-app subscriptions

Status
HQ
Remote; San Francisco, CA, USA
Batch
S18

Onboard and integrate suppliers for dropship and marketplace

Status
HQ
Toronto, ON, Canada; Remote
Batch
W19

Household needs, from bread to everything.

Status
HQ
Cairo, Cairo Governorate, Egypt; Remote
Batch
S19

Open source product analytics, self-hosted or in the cloud.

Status
HQ
Remote; San Francisco, CA, USA
Batch
W20