The following notable startups have completed the

Y Combinator Y Combinator (YC) is an American technology startup accelerator launched in March 2005. It has been used to launch more than 3,000 companies, including Airbnb, Coinbase, Cruise, DoorDash, Dropbox, Instacart, Quora, PagerDuty, Reddit, Str ...

Accelerator program. Mike Isaac described Y Combinator as: "Y Combinator accepts batches of start-ups twice a year in a semester-like system and gives them money, advice and access to a vast network of start-up founders and technologists who can advise them."

2005−2006

Clustrix Clustrix, Inc. is a San Francisco-based private company founded in 2006 that develops a database management system marketed as NewSQL. History Clustrix was founded in November 2006, and is sometimes called ''Sprout-Clustrix'' as it formed with t ...

Loopt Loopt was a company based in Mountain View, California, United States which provided a service for smartphone users to share their location selectively with other people (see location-based service). The service supported iPhone, BlackBerry T ...

* OMGPop *

Reddit Reddit (; stylized in all lowercase as reddit) is an American social news aggregation, content rating, and discussion website. Registered users (commonly referred to as "Redditors") submit content to the site such as links, text posts, images ...

Scribd Scribd Inc. is an American e-book and audiobook subscription service that includes one million titles. Scribd hosts 60 million documents on its open publishing platform. The company was founded in 2007 by Trip Adler, Jared Friedman, and Tikhon ...

Xobni Xobni (''inbox'' spelled backwards; pronounced ) was a San Francisco-based company that made software applications and services including products for Microsoft Outlook and mobile devices. It was founded in March 2006 by Adam Smith and Matt Bre ...

YouOS YouOS was a web desktop and web integrated development environment, developed by Webshaka until June 2008. From 2006 to 2008 YouOS replicated the desktop environment of a modern operating system on a webpage, using JavaScript to communicate ...

2007–2008

* 280 North *

AppJet AppJet was a website that allowed users to create web-based applications in a client web browser. AppJet was founded by three MIT graduates, two of whom were engineers at Google before starting AppJet. They launched their initial public beta on ...

Biographicon The Biographicon was a wiki-based website containing biographies of famous and non-famous people, that existed from March to August 2008. The site also showed connections between individuals covered, and explained the circumstances under which they ...

Disqus Disqus () is an American blog comment hosting service for web sites and online communities that use a networked platform. The company's platform includes various features, such as social integration, social networking, user profiles, spam and ...

Dropbox Dropbox is a file hosting service operated by the American company Dropbox, Inc., headquartered in San Francisco, California, U.S. that offers cloud storage, file synchronization, personal cloud, and Client (computing), client software. Dropb ...

Heroku Heroku is a cloud platform as a service (PaaS) supporting several programming languages. One of the first cloud platforms, Heroku has been in development since June 2007, when it supported only the Ruby programming language, but now supports Java, ...

Justin.tv Justin.tv was a website created by Justin Kan, Emmett Shear, Michael Seibel, and Kyle Vogt in 2007 to allow anyone to broadcast video online. Justin.tv user accounts were called "channels", like those on YouTube, and users were encouraged to br ...

* Ninite *

Octopart Octopart.com is a search engine for electronic and industrial parts headquartered in New York, NY. It aggregates parts from distributors and manufacturers online, making them easy to search for and purchase. It is free for users, and as of August ...

Parakey Parakey is a web-based computer user interface proposed by Firefox contributors Blake Ross and Joe Hewitt. Ross describes it as "a Web operating system that can do everything an OS can do." The idea behind it is to make image, video, and writi ...

Posterous Posterous was a simple blogging platform started in May 2008. It supported integrated and automatic posting to other social media tools such as Flickr, Twitter, and Facebook, a built-in Google Analytics package, and custom themes. It was based in ...

Songkick Songkick is a concert discovery service owned by Warner Music Group. The service allows users to search for upcoming concert events in their area, and also track individual artists to receive notifications of upcoming shows in their area. It also p ...

Virtualmin Virtualmin is a domain hosting and website control panel which gives the ability to create and manage many domains, as well as simplify both automation and tasks. It is based on Webmin. Virtualmin is an alternative to cPanel and Plesk. General ...

Weebly Weebly () is a web hosting service, headquartered in San Francisco. Weebly is a subsidiary of Block, Inc. History Weebly was founded in 2006 by Chief Executive Officer David Rusenko, Chief Technology Officer Chris Fanini, and former Chief Prod ...

2009−2010

1000Memories 1000Memories was a website that let people organize, share, and discover old photos and memories and to set up family trees. It was shut down in late 2013 after an acquisition by Ancestry.com.Airbnb Airbnb, Inc. ( ), based in San Francisco, California, operates an online marketplace focused on short-term homestays and experiences. The company acts as a broker and charges a commission from each booking. The company was founded in 2008 b ...

Bump Bump or Bumps may refer to: * A collision or impact * A raised protrusion on the skin such as a pimple, goose bump, prayer bump, lie bumps, etc. Infrastructure and industry * Coal mine bump, a seismic jolt occurring within a mine * Bump (uni ...

Homejoy Homejoy was an online platform which connected customers with home service providers, including house cleaners and handymen. The company was based in San Francisco. Homejoy served the United States, Canada, and United Kingdom for a total of over ...

* Listia *

Mixpanel Mixpanel is a business analytics service company. It tracks user interactions with web and mobile applications and provides tools for targeted communication with them. Data collected is used to build custom reports and measure user engagement an ...

Optimizely Optimizely is an American company that provides digital experience platform software as a service. Optimizely provides A/B testing and multivariate testing in marketing, multivariate testing tools, Personalization#Web pages, website personalization ...

* OwnLocal *

PagerDuty PagerDuty is an American cloud computing company specializing in a SaaS incident response platform for IT departments. It has been recognized by ''Forbes'' on its "Cloud 100" as well as the ''USA Today'' list for the top small and mid-sized compa ...

Recurse Center The Recurse Center (formerly known as Hacker School; also called RC) is an independent educational institution, that, until the COVID-19 pandemic, combined a retreat for computer programmers with a recruiting agency. The retreat is an intentional ...

(Hacker School) * RethinkDB * Stripe * WakeMate *

WePay WePay is an online payment service provider based in the United States. It provides an integrated and customizable payment solution, through its APIs, to platform businesses such as crowdfunding sites, marketplaces and small business software co ...

2011

Circle A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre. Equivalently, it is the curve traced out by a point that moves in a plane so that its distance from a given point is const ...

Codecademy Codecademy is an American online interactive platform that offers free coding classes in 12 different programming languages including Python, Java, Go, JavaScript, Ruby, SQL, C++, C#, and Swift, as well as markup languages HTML and CSS. The ...

* drchrono *

Firebase Firebase is a set of hosting services for any type of application (Android, iOS, Javascript, Node.js, Java, Unity, PHP, C++ ...). It offers NoSQL and real-time hosting of databases, content, social authentication (Google, Facebook, Twitter an ...

HackerRank HackerRank is a technology company that focuses on competitive programming challenges for both consumers and businesses. Developers compete by writing programs according to provided specifications. HackerRank's programming challenges can be solve ...

Humble Bundle Humble Bundle, Inc. is a digital storefront for video games, which grew out of its original offering of Humble Bundles, collections of games sold at a price determined by the purchaser and with a portion of the price going towards charity and t ...

Lanyrd Lanyrd (pronounced and named after "lanyard") was a conference directory website. It was created by Simon Willison and Natalie Downe and launched in 2010. The site was created while the couple were on honeymoon. The site compiled blog posts, p ...

LeadGenius LeadGenius is a privately held software as a service, marketing automation, and demand generation startup located in Berkeley, California. The company uses a combination of artificial intelligence and human computation to identify and communicate ...

MemSQL SingleStore (formerly MemSQL) is a proprietary, cloud-native database designed for data-intensive applications. A distributed, relational, SQL database management system (RDBMS) that features ANSI SQL support, it is known for speed in data ...

Meteor A meteoroid () is a small rocky or metallic body in outer space. Meteoroids are defined as objects significantly smaller than asteroids, ranging in size from grains to objects up to a meter wide. Objects smaller than this are classified as micr ...

* MongoHQ * OrderAhead *

Parse Parsing, syntax analysis, or syntactic analysis is the process of analyzing a string of symbols, either in natural language, computer languages or data structures, conforming to the rules of a formal grammar. The term ''parsing'' comes from Lati ...

Pebble (watch) Pebble is a discontinued smartwatch developed by Pebble Technology Corporation. Funding was conducted through a Kickstarter campaign running from April 11, 2012, to May 18, 2012, which raised $10.3 million; it was the most funded project in Kick ...

* Quartzy * Science Exchange *

Upverter Upverter is an electronic circuit design system delivered in a web browser, which enables hardware engineers to design, share, and review schematics and printed circuit boards. It additionally features the ability to generate a bill of materials ...

Verbling Verbling is an online language learning platform that pairs individuals with language teachers via video chat. The company was created at Y Combinator (company), Y Combinator in 2011. In 2015, Verbling raised $2.7 million in series A round funding ...

Vidyard Vidyard is a software company headquartered in Kitchener, Ontario, that creates software to host and analyze video performance. The company was founded in May 2010. Beginnings Originally starting as a fourth-year design project at the University ...

* ZeroCater

2012

* 9GAG * Boosted *

BufferBox BufferBox Inc. was a Canadian startup from the University of Waterloo, Ontario, Canada that leveraged parcel kiosks to provide consumers the convenience of picking up their online purchases 24/7. Founded by Jay Shah, Aditya Bali and Mike McCaule ...

Canopy Labs Canopy Labs is a customer analytics company headquartered in Toronto, Ontario, Canada with offices in San Francisco. It was founded in 2012 and offers SaaS marketing analytics for businesses and organizations.Ha, AnthonyY Combinator-Backed Canopy ...

Coinbase Coinbase Global, Inc., branded Coinbase, is an American publicly traded company that operates a cryptocurrency exchange platform. Coinbase is a distributed company; all employees operate via remote work and the company lacks a physical headquar ...

Diaspora A diaspora ( ) is a population that is scattered across regions which are separate from its geographic place of origin. Historically, the word was used first in reference to the dispersion of Greeks in the Hellenic world, and later Jews after ...

* Double Robotics *

Exec Exec or EXEC may refer to: * Executive officer, a person responsible for running an organization * Executive producer, provides finance and guidance for the making of a commercial entertainment product * A family of kit helicopters produced by Rot ...

Fullstack Academy Fullstack Academy is an immersive software engineering coding bootcamp located in New York City. Students of the full-time flagship course learn full stack JavaScript over the course of a 13-week, on-campus program. Fullstack Academy offers be ...

* Gusto *

Hackpad Hackpad was a web-based collaborative real-time text editor forked from Etherpad. It was used as the company wikis by multiple prominent startups of the 2010s, such as Airbnb, Stripe, and Upworthy. In April 2014, Hackpad was acquired by Dropbox. ...

Instacart Instacart is an American company that operates a grocery delivery and pick-up service in the United States and Canada. The company offers its services via a website and mobile app. The service allows customers to order groceries from participatin ...

* Kamcord * LendUp * LightTable *

PlanGrid PlanGrid is a construction productivity software designed for onsite construction workers. PlanGrid digitises blueprints. It has features such as version control and collaboration tools such as field markups, progress photos and issues tracking. P ...

Socialcam Socialcam was a mobile social video application for iPhone, Android and Windows Phone, that was launched March 7, 2011 and ended October 28, 2015. It allowed users to capture and share videos online and on mobile, as well as via Facebook, Twitter, ...

Survata Upwave, formerly Survata, is a marketing analytics company based in San Francisco, California. It is the leading Analytics Platform that provides software and data to plan, measure and optimize brand marketing. Upwave rebranded from Survata in Sept ...

Swiftype Swiftype is a search and index company based in San Francisco, California, that provides search software for organizations, websites, and computer programs. Notable customers include AT&T, Dr. Pepper, Hubspot and TechCrunch. History Swiftype was ...

* The Muse (The Daily Muse) *

Tilt.com Founded in 2012, Tilt (formerly Crowdtilt) was a crowdfunding company that allowed for groups and communities to collect, fundraise, or pool money online. James Beshara and Khaled Hussein launched the platform under the name Crowdtilt in Februar ...

Zapier Zapier is a product that allows end users to integrate the web applications they use and automate workflows. The company is fully remote. As of 2021, it connects to more than 4,000 apps, with free and paid plans. Overview Zapier provides workflo ...

2013

7 Cups 7 Cups (formerly called 7 Cups of Tea) is an online platform that provides counseling and therapy. The site connects users to "listeners", who have been trained in active listening, via anonymous text or voice chats. The site features distinct g ...

Airware Airware (incorporated as Unmanned Innovation, Inc.) was an American venture-funded startup that provided commercial unmanned aerial vehicles for enterprises. The company ceased operations on September 14, 2018. Airware was founded in 2011 in New ...

Bitnami Bitnami is a library of installers or software packages for web applications and software stacks as well as virtual appliances. Bitnami is sponsored by Bitrock, a company founded in 2003 in Seville, Spain by Daniel Lopez Ridruejo and Erica Bresc ...

Container Linux Container Linux (formerly CoreOS Linux) is a discontinued open-source lightweight operating system based on the Linux kernel and designed for providing infrastructure to clustered deployments, while focusing on automation, ease of application ...

(CoreOS Linux) *

CrowdMed CrowdMed is a healthcare platform based in San Francisco, California. Jared Heyman, Axel Setyanto and Jessica Greenwalt founded the company in 2012. CrowdMed aims to diagnose rare medical conditions through crowdsourcing and applying prediction m ...

DoorDash DoorDash, Inc. is an American company that operates an online food ordering and food delivery platform. The company is based in San Francisco, California. It went public in December 2020 on NYSE and trades under the symbol DASH. With a 56% mar ...

Experiment An experiment is a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried. Experiments provide insight into Causality, cause-and-effect by demonstrating what outcome oc ...

Goldbelly Goldbelly is an online marketplace for food products. Customers can order products from restaurants, bakeries, delis, etc. and have them shipped across the United States. The ordered food sometimes requires preparation and cooking. History ...

* Strikingly *

Teespring Teespring (Spring, Inc.) is an American company that operates ''Spring'', a social commerce platform that allows people to create and sell custom products.Rich, NathanielSilicon Valley's Start-Up Machine''The New York Times''. May 2, 2013. The c ...

True Link True most commonly refers to truth, the state of being in congruence with fact or reality. True may also refer to: Places * True, West Virginia, an unincorporated community in the United States * True, Wisconsin, a town in the United States * Tr ...

Watsi Watsi, legally Watsi, Inc., is a nonprofit healthcare crowdsourcing platform that enables individual donors to directly fund medical care for individuals in developing countries without access to affordable medical care. Background Watsi was ...

* Webflow *

Zenefits TriNet Zenefits (legal name: YourPeople, Inc., previously known as Zenefits) is a technology company based in San Francisco, that offers cloud-based software as a service to companies for managing their human resources, with a particular focus o ...

2014–2015

80,000 Hours 80,000 Hours is a London-based nonprofit organisation that conducts research on which careers have the largest positive social impact and provides career advice based on that research. It provides this advice on their website and podcast, and ...

* AirPair *

Algolia Algolia is a proprietary search engine offering, usable through the software as a service (SaaS) model. Company Algolia was founded in 2012 by Nicolas Dessaigne and Julien Lemoine, both originally from Paris, France. It was originally a comp ...

* Bluesmart *

Cofactor Genomics Cofactor Genomics is a Biotechnology, biotech company that primarily focuses on drug development, medical research, and personalized medicine. Overview Cofactor Genomics was founded in August 2008 by Jarret Glasscock, Matt Hickenbotham, and R ...

Flexport Flexport Inc. is an American multinational corporation that focuses on supply chain management and logistics, including order management, trade financing, insurance, freight forwarding and customs brokerage. The company is headquartered in San Fra ...

* Gigster *

GitLab GitLab Inc. is an open-core company that operates GitLab, a DevOps software package which can develop, secure, and operate software. The open source software project was created by Ukrainian developer Dmitriy Zaporozhets and Dutch developer S ...

* Kickback *

Lumi Lumi may refer to: Computing * Lumi (software), chemical analysis software * Lumi masking, a technique used by video compression software * LUMI, a supercomputer located in Finland Music * ''Lumi'' (album), a 1987 album by Edward Vesala * ...

* Move Loot *

Paribus Paribus is an American company and creator of the price tracking app of the same name, which syncs with a user's email account to scan for receipts and negotiates with online companies to refund the difference if there is a price drop shortly a ...

* Platzi *

Product Hunt Product Hunt is an American website to share and discover new products. It was founded by Ryan Hoover in November 2013. Users submit products, which are listed in a linear format by day. The site includes a comments system and a voting system si ...

Quora Quora () is a social question-and-answer website based in Mountain View, California. It was founded on June 25, 2009, and made available to the public on June 21, 2010. Users can collaborate by editing questions and commenting on answers that ...

Rigetti Computing Rigetti Computing is a Berkeley, California-based developer of quantum integrated circuits used for quantum computers. The company also develops a cloud platform called Forest that enables programmers to write quantum algorithms. History Rigetti ...

uBiome uBiome, Inc. was a biotechnology company based in San Francisco that developed technology to sequence the human microbiome. Its main product analyzed gut microbes in patients with long-term intestinal disorders. Founded in 2012, the company ...

Unbabel Unbabel is an artificial intelligence-powered human translation platform. The company has headquarters in Lisbon, Portugal, and San Francisco, California. Unbabel combines Neural Machine Translation with machine learning and a crowdsourced mod ...

Zesty Zest may refer to: Common usage * Zest (ingredient), the outer peel of a citrus fruit ** Zester, a tool for preparing zest ** Twist (cocktail garnish), a piece of zest * Zest (positive psychology), a component of character Brands * Zest (brand ...

Zidisha Zidisha allows people to lend small amounts of money directly to entrepreneurs in developing countries. It is the first peer-to-peer microlending service to link borrowers and lenders across international borders without a local microfinance ins ...

2016−2018

Boom Technology Boom Technology, Inc. (trade name Boom Supersonic) is an American company designing a , 65-88-passenger supersonic airliner. Named the Boom Overture, the airliner is planned to have a range of and to be introduced in 2025. After being incubat ...

Brex Brex Inc is an American financial service and technology company based in San Francisco, California. Brex offers business credit cards and Cash Management Accounts to technology companies. Brex cards are business charge cards, which require at ...

Coub Coub is a video streaming platform available on the web, iOS and Android. It allows users to create and share looped audio-visual collages up to ten seconds long, using existing video clips from YouTube, Vimeo, and other popular video sharing ...

* LendEDU * Modal Commerce (Drive Motors) *

Netomi Netomi, formerly msg.ai, is an American artificial intelligence company and developer of chatbot technologies. History msg.ai was founded in may 2015 by Puneet Mehta. msg.ai worked with Sony Pictures to launch a chat bot on Facebook Messeng ...

(msg.ai) *

Rappi Rappi is a Colombian multivertical company headquartered in Bogotá, Colombia, and with main offices in São Paulo and Mexico City. It was founded in 2015 by Simón Borrero, Sebastian Mejía, Felipe Villamarín and Guillermo Plaza. History Ra ...

Replit Replit (), formerly Repl.it, is a San Francisco-based start-up and an online integrated development environment ( IDE). Replit being Software as a service (SaaS) allows users to create online projects (called Repls, not to be confused with RE ...

Women Who Code Women Who Code (WWCode) is an international non-profit organization that provides services for women pursuing technology careers and a job board for companies seeking coding professionals. The company aims to provide an avenue into the technolo ...

2019−2020

Our World in Data Our World in Data (OWID) is a scientific online publication that focuses on large global problems such as poverty, disease, hunger, climate change, war, existential risks, and inequality. It is a project of the Global Change Data Lab, a re ...

* Upsolve

References

Sources

TechCrunch Article on YC Demo Day 1 for Summer 2015

TechCrunch Article on YC Demo Day 2 for Summer 2015

YCList.com

Here are the 63 Startups That Launched Today at Y Combinator's S18 Demo Day 1

All 59 Startups that Launched Today at Y Combinator's S18 Demo Day 2

YC Summer 2018 Batch Stats

6 Companies from the YC Summer 2018 Batch

9 companies from the YC Summer 2018 Batch

15 Companies from the YC Summer 2018 Batch

16 Companies from the YC Summer 2018 Batch13 Companies From YC Winter 20189 Companies from the YC W19 Batch13 Companies from the YC Winter 2019 Batch Part 217 Companies from the YC Winter 2019 Batch Part 4

External links

"YC Companies"
at ycombinator.com {{Y Combinator *