Y Combinator Summer 2011 (S11) Companies

Sift provides an AI-powered platform for fraud prevention and risk decisioning that helps digital businesses detect and manage online fraud. The platform serves companies across industries looking to reduce fraud losses while enabling secure growth.

9 investors

Snapjoy provides cloud-based photo storage that automatically organizes and deduplicates uploaded images using metadata, while allowing selective sharing with friends and collaborative copying between libraries.

1 investor

Streak is a CRM built directly into Gmail that helps recruiters, fundraisers, sales representatives, and business operators manage customer relationships and workflows without leaving their inbox. The company offers email tracking, task management, pipeline customization, and mail merge features designed for teams already using Gmail.

1 investor

Stypi provides a collaborative code editor enabling multiple users to write code simultaneously in real time, with adoption by major technology companies for remote technical interviews.

1 investor

Subsplash provides an all-in-one digital platform for churches, offering mobile apps, websites, livestreaming, online giving, communications tools, media hosting, and church management features. The platform enables churches to engage their congregation throughout the week and manage their digital presence from a single, centralized interface.

1 investor

Vapor builds server-side software using Swift.

1 investor

Verbling is a marketplace connecting language learners with over 2,000 verified tutors offering lessons in more than 70 languages. The platform enables remote, one-on-one instruction scheduled at learner convenience, with pricing starting at approximately MX$87.70 per lesson.

4 investors

VideoPixie provides video creation and editing tools for content creators and artists. The platform enables users to create and edit video content with a focus on fostering creativity.

2 investors

Vidyard provides an AI-powered video messaging and asynchronous communications platform designed for go-to-market teams including sales and marketing professionals. The platform enables users to create and share videos, host video content, and manage digital sales rooms to facilitate prospect engagement and revenue generation.

5 investors

A browser extension that aggregates customer data from multiple SaaS platforms (such as Mailchimp, Stripe, Shopify, and Salesforce) and displays it alongside emails for quick reference.

1 investor

Zeus provides property management software and services for corporate rental housing.

1 investor

Zigfu provides a plugin that enables developers to create applications for Microsoft Kinect motion-sensing devices.

1 investor