Y Combinator Summer 2011 (S11) Companies

AgileMD provides a cloud-based platform offering real-time predictive analytics and clinical pathways/algorithms to help doctors and nurses make medical decisions. It serves hospitals and clinicians in the United States.

3 investors

Aisle50 builds grocery deal and promotional campaigns for consumer packaged goods brands and retailers, delivering paid offers through web and mobile to drive store trips and larger shopper baskets. It serves retailers and CPG companies looking to attract incremental shoppers and reach consumers with discounts.

2 investors

Apollo GraphQL builds open-source and commercial GraphQL technologies—including a client, server, and gateway—used by engineering teams to unify and develop their GraphQL efforts. Its tools are used in production by large enterprises such as Walmart, Expedia, and PayPal.

13 investors

Automatic makes a product that links a car to the driver's smartphone and digital services, giving drivers insights about themselves and their vehicles to drive more safely and smartly. It positions the phone as a way to add connected-car features to existing vehicles without buying a new car.

6 investors

Caviar is a food delivery service that partners directly with restaurants to bring meals to customers, with ordering available on the web and via its iOS and Android apps. It operates in major U.S. cities and is part of Square's suite of business tools for restaurants.

4 investors

Citus Data builds Citus, an extension to PostgreSQL that scales the database out, offered as open source, as enterprise software for on-prem or cloud deployment, and as a fully managed database-as-a-service. It targets developers running multi-tenant applications or real-time analytics that need their Postgres database to scale.

8 investors

Clerky builds software that handles legal paperwork for startups and their attorneys, covering tasks from company formation to fundraising and hiring. It serves startups seeking to complete legal documents efficiently.

1 investor

Clutch.io builds developer tools for mobile applications, including an easy-to-integrate library for native iOS apps, A/B testing for mobile apps, and a framework for faster iteration. It serves mobile application developers.

4 investors

Codecademy is an online learning platform offering interactive coding and technical skills courses for working professionals and individuals seeking technology jobs. Founded in 2011, its free interactive courses have been used by over 45 million people.

9 investors

Compose offers a fully-managed platform that developers use to deploy, host, and scale databases such as PostgreSQL, Redis, and MongoDB. It handles the data layer for its users as a database-as-a-service product.

3 investors

A company providing physical infrastructure services including colocation, GPU/compute farms, and security and network buildouts.

1 investor

Debteye builds software to automate credit counseling. The company operated in the consumer finance space.

1 investor

Draft is an online word processor focused on version control and collaboration, offering clean draft saves, version tracking across multiple users, imports from services like Dropbox and Evernote, and an editing service. It targets individual writers and teams working on written documents.

1 investor

Dubjoy is a tool for translating and creating voice-overs for videos in multiple languages, aimed at businesses with large volumes of video content looking to reach international audiences. It also lets bilingual individuals earn money by performing translation and voice-over work.

1 investor

Embark builds a mobile app for iOS and Android that helps people navigate cities using public transit, showing real-time arrival information for trains and buses and sending push notifications about service delays. It serves urban commuters across twelve major transportation systems in the US and UK and was acquired by Apple in 2013.

2 investors

Everyme is a private social network that lets people share updates within intimate groups called Circles, which are created from a user's address book. It positions itself as a privacy-focused alternative to public social sharing.

2 investors

Firebase is a mobile development platform that provides developers with tools and backend infrastructure to build and grow iOS, Android, and web apps. The company was acquired by Google in October 2014.

7 investors

FOBO is a mobile marketplace app for selling consumer electronics to nearby buyers. It guarantees sellers a set price paid upfront and fast sales within 97 minutes.

1 investor

Freshplum applied data science to help companies that sell goods and services online make data-driven decisions. The company operated in the analytics space for e-commerce sellers.

3 investors

Genius operates an online music encyclopedia where a community, an in-house creative team, and artists annotate and explain song lyrics and the stories behind music. The service reaches over 100 million people monthly through Genius.com and other platforms where music fans gather.

5 investors

Glassmap offered a location-sharing mobile app for iOS and Android that let people show friends their whereabouts, coordinate meetups, and discover who and what is nearby. The company was acquired by Groupon in January 2013.

1 investor

GoCardless operates a global bank payment network that lets businesses collect recurring and one-off payments directly from customers' bank accounts across multiple countries and currencies. It also offers add-on products for recovering failed payments, fighting fraud, and accessing bank account data via open banking.

13 investors

HackerRank operates an AI-powered platform for technical hiring and upskilling, letting companies assess, interview, and grow developer talent based on demonstrated skills. It serves recruiters and hiring teams and hosts a community of over 26 million developers who learn, certify skills, and find jobs.

6 investors

Hungry Labs was a company that later became part of Snaplayer. The page provides no details about its product or market; it is now inactive.

1 investor