Y Combinator Winter 2013 (W13) Companies

Thalmic Labs manufactures wearable armbands that detect electrical muscle signals to enable wireless control of computers and mobile devices. The company serves users seeking alternative interaction methods with digital technology.

1 investor

Padlet creates web-based tools like timelines and maps that serve as alternatives to traditional documents and presentations for sharing information. The platform is used by over ten million people worldwide, including students creating content online.

3 investors

PayTango provides invoicing software that generates and distributes PDF invoices, replacing manual spreadsheet and document-based workflows for small businesses and freelancers.

1 investor

Posmetrics operates tablet-based systems installed in business locations that gather customer feedback in brief survey sessions and deliver immediate insights to help organizations enhance operations.

1 investor

Prophecy Sciences develops cognitive assessments that combine behavioral testing with biosensor measurements to identify and predict workplace performance factors across mental aptitude, personality, and decision-making. The company provides hiring and team management tools for employers seeking to match candidates to roles and optimize team dynamics.

1 investor

RADAR is an RFID-based hardware and software platform that enables real-time inventory tracking and location accuracy in retail stores. The system provides item-level visibility to reduce out-of-stocks, improve fulfillment, and enables checkout-free shopping experiences.

4 investors

RoverRide provides real-time transit routing for Bay Area public transportation systems, combining MUNI, BART, and Caltrain data to optimize journey planning for urban commuters in San Francisco.

1 investor

Slack's huddles feature enables teams to conduct audio and video meetings directly within Slack, with AI-powered note-taking and screen sharing capabilities. The product is designed for informal synchronous collaboration among remote and hybrid teams.

2 investors

Behavure AI provides a behavioral intelligence platform for enterprises to monitor, explain, and control AI systems, agents, and LLMs in real time. The platform offers visibility into how AI systems make decisions across users, infrastructure, and data pipelines, addressing the AI black box problem through event-level intelligence and compliance governance.

2 investors

Semantics3 provides data and AI APIs for ecommerce and logistics operations, offering product information feeds, machine learning-based categorization and attribute extraction, and analytics dashboards used by marketplaces, logistics providers, and brands.

2 investors

SimplyInsured operates a 100% online platform for small business owners to purchase and manage health insurance in the United States. The company aims to simplify the health insurance buying process and has served over 25,000 customers since its founding.

3 investors

Strikingly is a website builder that enables users to create and publish websites without coding or design experience in under 30 minutes. The platform serves small business owners, entrepreneurs, and creators with built-in e-commerce, blogging, analytics, and membership features.

5 investors

A live sports streaming platform offering HD-quality broadcasts of football matches including Turkish Super Lig, European leagues, and Champions League.

1 investor

Swapbox operates a network of pickup and drop-off kiosks for package delivery and shipping, allowing customers to receive parcels securely and send items without advance packaging or planning.

1 investor

Swish is a marketplace where consumers discover and purchase newly launched physical products from independent makers and brands before they reach mainstream retail.

1 investor

Amaze Commerce provides tools for creators to discover product opportunities, generate designs, and launch physical and digital products faster. The platform serves entrepreneurs and content creators in the apparel and accessories space.

4 investors

Terascore provides a web-based platform for teachers to build, distribute, and grade tests while tracking student performance metrics and question effectiveness. The tool lets educators incorporate multimedia content and equations into assessments and stores questions for future use.

1 investor

VaycayHero is a vacation rental marketplace that has been integrated into RedAwning.com, offering access to over 100,000 instantly bookable vacation properties across 10,000+ destinations. The platform serves leisure travelers seeking short-term rental accommodations with membership benefits and price guarantees.

2 investors

Watsi funds medical treatments for patients in low-income countries through a platform that connects donors directly to patients needing care. The nonprofit operates in 35 countries and has funded over $21.4M in healthcare treatments.

1 investor

A platform that allows individuals to invest in private startups with minimum investments of $100, leveraging regulatory changes to democratize access to early-stage company equity.

7 investors

Wevorce provides mediated divorce services using attorney-mediators and supplementary financial and parenting experts to help couples reach customized settlements while prioritizing child welfare and affordability over adversarial litigation.

2 investors

Zenefits provides an HR platform that consolidates benefits administration, payroll, onboarding, and talent management tools for small and mid-sized businesses into a single application.

6 investors