YC Companies/Summer 2011

YC Summer 2011 Data Room

60 companies·Last synced Mar 26, 2026
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Predictive analytics and clinical pathways for hospitals

Hiring
Healthcare
Healthcare -> Healthcare IT
San Francisco, CA, USA; Remote
Machine Learning
Healthcare

At AgileMD, we are building the most advanced real-time predictive analytics and clinical algorithms platform for hospitals. Our cloud-based engine helps thousands of doctors and nurses around the country make medical de…

19
Borna Safabakhsh

Grocery deals.

Consumer
Consumer -> Home and Personal
Chicago, IL, USA
Grocery

Aisle50 came out of the summer 2011 class at Y Combinator, the Silicon Valley accelerator. Aisle50 builds CPG and retailer campaigns aimed to get both banner and brand incremental shoppers, bigger share and valuable bra…

11
Christopher Steiner
George Korsnick
Riley Scott

Apollo helps engineering teams accelerate delivery

Hiring
B2B
B2B -> Infrastructure
San Francisco, CA, USA; Remote
Developer Tools
Open Source
GraphQL

Apollo GraphQL is the leader in open source and commercial GraphQL technologies. Apollo’s open-source GraphQL client, server, and gateway are downloaded more than 17M times per month and used in production by over 30% of…

200
Geoff Schmidt
matt debergalis
Nick Martin

Automatic connects your car to the rest of your digital life.

Consumer
Consumer -> Consumer Electronics
San Francisco, CA, USA
IoT
Automotive

Our Mission: To empower drivers with knowledge about themselves and their cars so they can be safer and drive smarter. We believe you shouldn’t have to buy a new car to have a better driving experience, and that the phon…

51
Jerry J

Uber for food.

Consumer
Consumer -> Food and Beverage
San Francisco, CA, USA
Delivery
Food Tech

Caviar delivers the best restaurants. We partner directly with restaurants to bring food to customers across the country — whether dining for one or 100. Customers can order ahead on the web, or instantly from the Caviar…

51
Andy Zhang
Jason Wang
Richard Din
+1 more

Real-time. Big data. PostgreSQL

B2B
B2B -> Infrastructure
San Francisco, CA, USA; Istanbul, Istanbul, Turkey; Amsterdam, NH, Netherlands
Open Source
Big Data
Databases

The amount of time businesses spend on their databases is altogether too much time. Citus is fixing this problem. Citus is worry-free Postgres. Built to scale out, Citus is an extension to Postgres that is available a…

45
Sumedh Pathak

Makes legal paperwork easy for startups and their attorneys.

B2B
B2B -> Legal
Palo Alto, CA, USA; Burlingame, CA, USA; Remote
Documents
Legal
LegalTech

Clerky builds software to make legal paperwork easier for startups and their attorneys. From formation to fundraising to hiring - everything a startup needs. Thousands of top startups use Clerky to get legal paperwork …

15
Chris Field
Darby Wong

An easy to integrate library for native iOS applications designed to…

B2B
B2B -> Engineering, Product and Design
San Francisco, CA, USA
Developer Tools

Clutch.io builds tools for mobile application developers. Clutch's line of tools helps developers overcome some common problems with mobile app development including A/B testing for mobile apps as well as a framework tha…

2
Eric Florenzano

The leading online learning platform for technical skills.

Top Company
Education
Education
New York, NY, USA
Education

Working professionals are experiencing their jobs changing amidst the rise of technology and automation threatens over 800 million jobs. At the same time, software is eating the world, disrupting every major industry, an…

225
Zach Sims

We make it easy to run databases. PostgreSQL, Redis, MongoDB,…

B2B
B2B -> Infrastructure
San Mateo, CA, USA
DevOps
Databases

Compose is a fully-managed platform used by developers to deploy, host, and scale databases to help you conquer the data layer. www.compose.io

51
Ben Wyrosdick
Jason McCay

Server key management, VPN as a Service, Privacy VPN. Sold to…

B2B
B2B -> Infrastructure
Mountain View, CA, USA
Cloud Workload Protection
DevSecOps
Next-gen Network Security

CryptoSeal provides Virtual Private Networks (VPNs) as a service.

3
Erik Berls
Ryan Lackey
Thomas Sparks

Automate credit counseling.

Fintech
Fintech -> Consumer Finance
Chicago, IL, USA
Fintech

Automate credit counseling.

2
John Sun
Kevin Yu
Paul Zhang

Making Draft. Super simple version control and collaboration for…

B2B
B2B -> Productivity
Chicago, IL, USA; Remote
Documents
SaaS
Collaboration

Draft is a streamlined online word processor with version control. Draft offers clean saves of drafts instead of the usual autosave jumble, clear version control between multiple users, easy importing from popular fil…

1
Nathan Kontny

Dubjoy translates and voice-overs your video to any language

B2B
B2B -> Marketing
San Francisco, CA, USA
Video

Dubjoy makes it easy for anyone to translate and voice-over any video. Businesses that produce or host a lot of video content use Dubjoy to grow faster and go global. People who speak at least 2 languages are able …

2
Miha Rebernik
Robert Farazin
Rok Gregorič

Public transit apps. Acquired by Apple in 2013.

Consumer
Consumer -> Transportation Services
San Francisco, CA, USA
Transportation

Embark is a mobile application designed to make it easy to get around cities using mass transit. Among other features, the iOS and Android application tells users when trains and busses are coming and will send push noti…

2
Taylor Malloy

The #1 private social network

Consumer
Consumer -> Social
Mountain View, CA, USA
Social Network

Everyme is the private social network. With Everyme, you can share like you do in real life, in intimate Circles. A Circle is a private news feed between you and a group of people. It’s private and secure, so you no l…

2
Oliver Cameron
Vibhu Norby

Build and grow iOS, Android, and Web apps.

B2B
B2B -> Infrastructure
Mountain View, CA, USA

Firebase is a mobile platform that gives developers the tools and infrastructure to build better apps and grow successful businesses Firebase was acquired by Google in October, 2014. Learn more at firebase.google.com

500
James Tamplin

Sell to people nearby.

Consumer
Consumer -> Home and Personal
San Francisco, CA, USA
E-Commerce
Location-based

FOBO is a local marketplace for selling consumer electronics. FOBO offers users a new way to sell goods via mobile app. It gets rid of all the hassle that is usually associated with local marketplaces and makes it ult…

2
Ed McManus
Ryan Mickle

Analytics with action

B2B
B2B -> Analytics
San Francisco, CA, USA
Analytics

Freshplum's goal is to bring the decision-making power of data science to companies who sell goods and services electronically.

8
Nick Alexander
Sam Odio

Music Intelligence

Consumer
Consumer -> Content
NY, USA
Music

Genius is the world's biggest encyclopedia of music. Powered by its community, in-house creative team, and the artists themselves, Genius serves music knowledge to over 100 million people each month on Genius.com and eve…

101
Ilan Zechory
Tom Lehman

Location sharing. Acquired by Groupon in 2013.

Consumer
Consumer -> Social
San Francisco, CA, USA

Glassmap was acquired by Groupon (NASDAQ: GRPN) in January 2013. Glassmap is a simple, beautiful way to show your friends where you are and what you are up to! Use it to coordinate meetings and hangouts, keep up with lo…

11
Geoffrey Woo
Jon Zhang
Jono Chang

We’re building the world’s bank payment network.

Fintech
Fintech -> Consumer Finance
London, England, United Kingdom
Fintech
Payments

At GoCardless we believe that bank payments are the best way to pay and get paid. We help businesses collect both recurring and one-off payments, without the chasing, stress or expensive fees. We’re building a global …

900
Hiroki Takeuchi
Tom Blomfield

Change the world to value skills over pedigree

Hiring
B2B
B2B -> Recruiting and Talent
Mountain View, CA, USA; Remote
Developer Tools
Recruiting

At HackerRank, our mission is to change the world to value skills over pedigree. Thousands of companies use our AI-powered platform to hire next-gen developers based on what they can do - not just what’s on their resu…

300
Harishankaran
Vivek Ravisankar

Now part of Snaplayer.

Consumer
Consumer -> Social
Public profile enrichment pending.2
Kevin Lacker

The platform for your visual media.

B2B
B2B -> Infrastructure
San Francisco, CA, USA
Developer Tools
SaaS
Video

Nobody should have to employ expensive imaging scientists and engineers for their business to get the most out of their visual media. This is where imgix has your back. imgix is a platform for managing, processing, rende…

34
Chris Zacharias

Create & Share Product Roadmaps

B2B
B2B -> Productivity
San Francisco, CA, USA
Productivity

BakedCode create applications which help developers and businesses, focusing on making new solutions or improving on current solutions.

2
Greg Cooper
Simon Fletcher

Send and print photo albums with people you love. Acquired by Lyft

Consumer
Consumer -> Home and Personal
Mountain View, CA, USA

Kicksend is a web, mobile and desktop app that provides an easy solution for printing and sending photographs. Kicksend platform is complete with social tools, multiple payment options, one click purchasing and a robust …

11
Brendan Lim
Pradeep Elankumaran

Creativity at Play. Tablet toys. Acquired by Google, 2015.

Consumer
Consumer -> Gaming
San Francisco, CA, USA
Education
Gaming

We're creating digital toys and tools that empower kids to create, learn & share their ideas through play. Give a young child a couple of toys or a box of crayons and he or she is likely to play for hours, deeply engr…

2
Andy Russell
Thushan Amarasiriwardena

LeadGenius is an account-based marketing and lead generation…

B2B
B2B -> Sales
Berkeley, CA, USA
B2B
Sales
Marketing

LeadGenius is the most efficient way to equip sales and marketing teams with custom B2B lead data at scale. Our data experts conduct ongoing research to automatically supply teams with accurate contact information and ha…

50
Anand Kulkarni
Dave Rolnitzky
Philipp Gutheim
+1 more

Online auto and business insurance. (Acquired 2013)

Fintech
Fintech -> Consumer Finance
San Francisco, CA, USA
Insurance

Leaky is the best, free way to compare insurance. With Leaky, we let you compare both prices and personalized quality scores for the largest insurers in the US. Insurance doesn't need to be scary, and so we do our bes…

2
Darren Nix
Jason Traff

Generate stories from SEC filings.

Fintech
Fintech -> Consumer Finance
San Francisco, CA, USA
Analytics

MarketBrief analyzes 30,000+ trusted documents per day looking for relevant business headlines and breaking news all within fractions of a second.

2
Chris Auer

Data products for sales, marketing, finance, recruiting, and more.

Hiring
B2B
B2B
San Francisco, CA, USA; Remote
SaaS
B2B

MixRank processes petabytes of data every month from web crawls, Google Play Store, Apple App Store, social media, and dozens of other sources. We have hundreds of customers using our data products including Google, Amaz…

31
Scott Milliken

Engage customers through personalized omni-channel messaging

Hiring
B2B
B2B -> Marketing
San Mateo, CA, USA
Developer Tools
SaaS
B2B

OneSignal is the leading omnichannel customer engagement solution, powering personalized customer journeys across mobile and web push notifications, in-app messaging, SMS, and email. Our easy-to-use interface empowers co…

150
Long Vo

Yelp for service pros.

Consumer
Consumer -> Home and Personal
San Francisco, CA, USA
Marketplace
Reviews

Opez is dedicated to helping you discover exceptional service professionals. But who are these people, you might ask, and what are they like? Well, friends, let us tell you. To us, exceptional service professionals are i…

11
Paul Chou

Facebook analytics. Acquired by Unified in January 2013.

B2B
B2B -> Analytics
San Francisco, CA, USA
Analytics
Social

PageLever is the leading analytics platform for measuring your brand’s presence on Facebook. 4 of the top 10 Facebook pages rely on PageLever, as well as brands like YouTube, MTV, and Intel. In January 2013, PageLever …

11
David Turner
Jeff Widman

Parse is the easiest way to build apps.

B2B
B2B -> Engineering, Product and Design
Menlo Park, CA, USA

Parse offers cloud-based software developer kits that enable users to create apps for desktop, mobile, and embedded devices. Its product portfolio is comprised of Parse Core to save data in the cloud; make the app social…

11
Kevin Lacker

Hyperlinking the real world.

Consumer
Consumer -> Food and Beverage
Los Angeles, CA, USA

Paperlinks' mission is to hyperlink the real world. Currently, Paperlinks fulfills this by providing the ultimate QR code infrastructure for businesses. Paperlinks' solution is end-to-end, providing: a free QR reading ap…

11
Hamilton Chan

Self-service display advertising for SaaS and online retail.

B2B
B2B -> Marketing
San Francisco, CA, USA
SaaS
Advertising

Perfect Audience is a retargeting platform that lets businesses bring back lost customers and get more sales effortlessly.

11
Brad Flora
Jordi Buller
Kurt Mackey

The Phone System for Sales Teams.

B2B
B2B -> Infrastructure
Mountain View, CA, USA
Sales
CRM
Telecommunications

Formerly Pingm.

4
David Dolphin
Patrick O'Doherty
Consumer
Consumer -> Home and Personal
San Francisco, CA, USA

Picplum is a photo printing service that is the perfect addition to any family with young children. We know parents are too busy to organize their photos, let alone to find the time to print and share them. That's where …

2
Akshay Dodeja

Javascript proxy.

B2B
B2B -> Infrastructure
Palo Alto, CA, USA
Developer Tools

Proxino is a cloud platform for monitoring and debugging client-side JavaScript.

Ethan Fast
Muzzammil (MZ) Zaveri

Quad is where college students get things done.

Education
Education
San Francisco, CA, USA
Education

Quad is where college students get things done. Today, over 41% of students drop out, 1 in 3 struggle with time management, and 45% end up underemployed because most solutions are ineffective for the modern student. …

12
Sagar Shah

Marketplace for life science supplies.

Healthcare
Healthcare -> Healthcare IT
Hayward, CA, USA
SaaS
B2B
E-commerce

The world’s No. 1 lab management platform. We help scientists easily organize orders, manage inventory, and save money.

100
Adam Regelmann
Jayant Kulkarni

Better data structures = no DB.

B2B
B2B -> Infrastructure
San Francisco, CA, USA; Copenhagen, Denmark

Realm (formerly tight.db) is a mobile database that enables its users to develop applications faster, develop applications that are fast, and craft amazing user experiences. Realm is a replacement for SQLite & Core Data.…

51
Alexander Stigsen
Bjarne Christiansen

The easiest way to find a tenant. Rentobo is a tool that makes it…

Real Estate and Construction
Real Estate and Construction -> Housing and Real Estate
San Francisco, CA, USA
Marketplace
Real Estate

Rentobo is a new tool built for landlords, managers, and agents of all sizes to simplify the process of finding and signing a new tenant for your rental property. Enter your listing details once at Rentobo and we will h…

11
James Shkolnik
Matt Kopko
Nikhil Abraham
+1 more

Long-distance carpooling marketplace. Shut down in early 2013.

Consumer
Consumer -> Transportation Services
San Francisco, CA, USA
Marketplace

Ridejoy is a community-driven marketplace for sharing rides. Ridejoy making it easy to share rides with friendly people. If you're going on a trip, you can list extra seat space in your car, and if you need to get som…

11
Jason Shen
Kalvin Wang
Randy Pang

Powering scientific outsourcing

Healthcare
Healthcare -> Healthcare Services
Palo Alto, CA, USA; Remote
SaaS
Health Tech
Biotech

Science Exchange powers R&D outsourcing for the world’s top life sciences companies. Our marketplace gives scientists access to the innovation and research they need and our platform fully automates R&D outsourcing from …

50
Dan Knox
Elizabeth Iorns

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

Top Company
B2B
B2B -> Analytics
San Francisco, CA, USA
SaaS
B2B

Segment is one place to collect customer data and send it to your tools for analytics, marketing automation, and raw data access with SQL. Implement all of your event tracking with Segment’s single API instead of wrangli…

550
Ilya Volodarsky

The Leader in Digital Trust & Safety

Hiring
B2B
B2B -> Security
San Francisco, CA, USA
Fintech
Machine Learning
SaaS

Sift is the leader in Digital Trust & Safety, empowering digital disruptors to Fortune 500 companies to unlock new revenue without risk. Sift dynamically prevents fraud and abuse through industry-leading technology and e…

Jason Tan

Photo library.

Consumer
Consumer -> Content
Boulder, CO, USA

Snapjoy is an online photo storage service that imports photos from anywhere and organizes them in a meaningful way. After uploading some photos, the app categorizes the photos for its user, using metadata to try to int…

11
JP Ren
Michael Dwan

Streak transforms Gmail into a powerful CRM

Hiring
B2B
B2B -> Sales
Remote
SaaS

Streak is the only CRM integrated entirely within your Gmail inbox, and works alongside all your other G Suite applications. It can be used to track any business process including sales, partnerships, support, hiring, de…

35
Aleem Mawani

Realtime collaborative coding

B2B
B2B -> Productivity
San Francisco, CA, USA
Collaboration

Stypi is a San Francisco based tech company focusing on real-time collaboration. Its first product is a collaborative code editor that many companies such as Apple, Pinterest, and Palantir, have incorporated into their r…

2
Byron Milligan
Jason Chen

Touch-friendly marketing, acquired by Dropbox

B2B
B2B -> Marketing
San Francisco, CA, USA
Advertising
Public profile enrichment pending.2
Matt Holden
Sean Lynch

In-video advertising.

Consumer
Consumer -> Social
NY, USA
Video
Advertising

Creating modular server side software with Swift.

2
John Hiesey
Shazad Mohamed
Xuwen Cao
+1 more

Language learning through video chat.

Education
Education
San Francisco, CA, USA
Education

Verbling’s mission is to empower people all over the world to become fluent in a foreign language. We use online live video technology to help people develop their skills together with teachers and students on a global s…

2
Mikael Bernstein

Marketplace for Video Production Services. We help you hire the best…

B2B
B2B -> Marketing
San Francisco, CA, USA
Marketplace
Video

Videopixie is a marketplace for video production that allows users to have great video on the website, such as promotional videos and etc. Videopixie is a marketplace where you can hire the world’s best video profession…

11
Tom Saffell

Video for business.

B2B
B2B -> Marketing
Kitchener, ON, Canada

Vidyard is The Video Platform for Marketing, Sales & Secure Communications. Vidyard is the easiest way to create, host, and share videos so businesses can keep connected with customers and colleagues. Want to lear…

201
Devon Galloway
Michael Litt

Brings dozens of SaaS's (Mailchimp, Stripe, Shopify, Salesforce,…

B2B
B2B -> Productivity
San Francisco, CA, USA
SaaS
Productivity
Email

Zenbox is a browser extension that connects all of your SaaS services.Open an email, and Zenbox pulls in your customer information from dozens of services right into the sidebar.

2
Kev Zettler
Sean Grove

Tech-enabled property manager focused on corporate rentals; Acquired…

Real Estate and Construction
Real Estate and Construction -> Housing and Real Estate
San Francisco, CA, USA
Real Estate
Proptech
Public profile enrichment pending.200
Joe Wong
Kulveer Taggar
Srini Panguluri

Layer above Kinect.

Consumer
Consumer -> Gaming
San Francisco, CA, USA
Augmented Reality

Zigfu is the easiest way to make and play Kinect apps. Download the plugin, hook up your sensor, and enjoy the future now!

2
Amir Hirsch
Roee Shenberg
Shlomo Zippel
+1 more