Y Combinator Summer 2011 (S11) Companies

Imgix provides image optimization and processing technology that enables customers to deliver, transform, and optimize visual content across digital platforms. The platform serves marketers, developers, and content creators with tools for image optimization, AI-powered editing, and visual content delivery.

2 investors

Interstate develops software for creating and sharing product roadmaps with teams and stakeholders.

1 investor

Kicksend enables customers to print photos and create personalized photo products including greeting cards, canvas prints, frames, and photo books for pickup at Walgreens locations or delivery to their home. The platform serves consumers who want to create custom photo merchandise.

1 investor

Launchpad Toys makes iPad applications, including Toontastic, that let children create and share animated stories and creative projects. The platform targets young children ages 4-10 and aims to support imaginative expression through digital play.

1 investor

LeadGenius provides AI-powered contact intelligence and data sourcing for go-to-market teams to identify and engage target customers. The platform combines artificial intelligence with human intelligence and emphasizes ethical data practices, compliance with regulations like GDPR and CCPA, and fair-wage crowdsourcing.

11 investors

Leaky is a platform that helps consumers compare, manage, and monitor insurance plans across personal, auto, home, and business coverage. The service provides scenario modeling and price comparisons while maintaining privacy and alerting users to potential savings opportunities.

1 investor

MarketBrief extracts business headlines and breaking news from SEC filings, processing tens of thousands of documents daily to identify relevant market-moving stories.

1 investor

MixRank provides workforce intelligence and company risk analysis data for investors and recruiters, offering access to employee and personnel records across 45 million companies with API, flat-file, and database delivery options.

2 investors

OneSignal provides customer engagement and messaging infrastructure that enables businesses to send personalized, omnichannel communications to their customers at scale. The platform serves mobile app developers and businesses of all sizes across industries.

8 investors

Opez is a marketplace where customers can find and discover service professionals based on their track record and reputation.

1 investor

A platform for analyzing and measuring brand performance metrics across Facebook pages, used by major media and technology companies to track their social media presence.

1 investor

Parse provides cloud-based backend infrastructure and tools for developers to build applications across mobile, desktop, and embedded platforms, including data storage, push notifications, and usage analytics.

1 investor

PayDragon provides QR code infrastructure and services for businesses, including a reader app, code generation, content management, and design and printing capabilities.

1 investor

Perfect Audience is a retargeting platform for SaaS and online retail companies to reconnect with previous visitors and recover lost sales opportunities.

1 investor

1 investor

Picplum provides a photo printing service designed for parents of young children, automating the organization and printing of digital photos for sharing with relatives and friends.

1 investor

Proxino provides infrastructure for observing and troubleshooting JavaScript execution in browsers and client applications.

1 investor

Quad is a mobile platform that helps college students track assignments, communicate with peers, and access academic support by converting syllabus information into structured data. The service targets students struggling with course organization and time management.

1 investor

Quartzy provides a platform for lab management and research resource optimization, serving life scientists, lab managers, and academic institutions. The company helps manage orders, inventory, and workflows for laboratory research operations.

5 investors

Realm provides an embedded database engine for mobile applications, serving as an alternative to SQLite and Core Data. The platform aims to reduce development time and code complexity for iOS and Android developers building data-driven apps.

1 investor

Rentobo provides a platform for landlords and property managers to list rental properties across multiple search sites, consolidate tenant applications and background information, and manage lease signing and deposit collection online.

1 investor

RideJoy is a marketplace connecting equestrian riders and horse owners with verified accommodations including boarding, layovers, RV parking, cabins, and camping across the United States. The platform also facilitates discovery of horse trails, arenas, clinics, and equestrian experiences.

1 investor

Science Exchange provides operational infrastructure for life sciences R&D, connecting organizations, suppliers, and workflows to streamline contracting, compliance, onboarding, and financial coordination across the research ecosystem.

5 investors

Segment is a customer data platform that collects, unifies, and activates first-party customer data from multiple touchpoints, enabling businesses to create unified customer profiles and orchestrate personalized experiences across 750+ integrations and destinations.

12 investors