Y Combinator Winter 2012 (W12) Companies

42Floors operates an online search platform for commercial real estate, letting users discover and browse available office spaces with photography and listing data. The free service covers major markets across the United States and was acquired by Knotel in 2018.

5 investors

99dresses runs an online marketplace where women in the U.S. buy, sell, and trade fashion items with other users. Originally launched in Australia, the company now operates from New York and offers an iOS app for peer-to-peer clothing exchange.

1 investor

Amiato offers a real-time data integration service that moves unstructured data from flexible databases like MongoDB and CouchBase into structured business intelligence tools. It targets businesses that need to run reports and ad-hoc analysis on data from NoSQL databases without manual setup or infrastructure work.

2 investors

Amplitude AI Feedback is a tool that analyzes user feedback from sources like Slack threads, app reviews, community posts, support tickets, and surveys to surface actionable product insights. It serves product teams and builders, connecting what users say to how they behave in the product.

20 investors

Ark operates a people search engine that indexes over a billion social network profiles, letting users find individuals such as old classmates, business contacts, and friends. It aggregates and organizes social information to make people discoverable online.

2 investors

Authy is a two-factor authentication (2FA) platform that developers and organizations integrate to add strong account security as an alternative to passwords. It serves websites and enterprises and is used by companies such as Coinbase, Cloudflare, and Twitch.

8 investors

Kyte is an Android parental control app that converts a phone into a child-safe device, limiting it to pre-approved calls and authorized games while blocking access to the rest of the phone. Parents manage permissions from a web browser, set time limits, monitor internet and call activity, and track the phone's location in real time.

1 investor

BookSolid provided an online booking system for tour operators, functioning as a reservation marketplace similar to OpenTable but for tours.

1 investor

Brace is a website hosting service that updates sites by syncing files through Dropbox, providing separate Draft and Production versions for iteration and performance. It targets front-end developers building and deploying websites.

2 investors

Carsabi operated a search engine for used cars, aggregating vehicle listings for car buyers. It was part of Y Combinator's Winter 2012 batch and is now inactive.

1 investor

Chute provides an enterprise platform for user-generated content, letting brands, agencies, and publishers discover consumer photos and videos through visual and text search and then handle their ideation, production, and distribution. It serves large brands and media organizations in the marketing and media sector.

1 investor

CircuitHub provides on-demand electronics manufacturing for small-batch production, using a factory-scale robotics platform to speed up turnaround and reduce cost. It serves hardware and engineering teams at companies such as Tesla, NASA, and Zipline.

2 investors

CleverDeck is a flashcard application that uses customizable spaced repetition to help people learn foreign language vocabulary. It includes over three thousand words paired with images, native-speaker audio, and example sentences.

1 investor

Coderwall is a collaborative learning platform where software developers can improve their programming knowledge. The company serves developers and is based in San Francisco.

1 investor

TenthBit Inc. makes Couple, a mobile app for iOS and Android that connects two partners' phones and gives them a private shared timeline for messaging and staying in touch. It is a consumer social app aimed at couples in long-distance or everyday relationships.

1 investor

Documents.Me (Nouvou) provides client-side encryption and mobile file-sharing tools for securing files across devices and the cloud, aimed at enterprise customers.

1 investor

Atrium is a technology company and corporate law firm that provides business and legal services to startups, with an emphasis on fast, transparent, and price-predictable pricing.

1 investor

FamilyLeaf offers a private page where family members can share photos, post life updates and messages, and store contact information. It is a private social network focused on keeping families connected.

3 investors

FarmLogs makes software for farmers to track field performance, reduce waste, and improve profitability. It provides farm management and analytics tools for agricultural operations.

2 investors

Flutter is a mobile dating app that uses short, ephemeral videos and computer vision to help people match with others nearby. Users browse videos to like or pass on potential matches, then connect through 15 seconds of live two-way video to gauge mutual interest.

1 investor

Fond is a SaaS platform that combines employee rewards and recognition into a single tool, letting employees and managers recognize each other, redeem rewards, and access corporate discounts. It is aimed at HR teams to reduce the effort of managing recognition programs.

7 investors

GiveSpark was a celebrity-driven charity fundraising platform. The company operated in the nonprofit fundraising space.

1 investor

Glider provides software that organizes the deal and contract process, used by companies ranging from large public firms to small businesses. It also filters distracting emails away from users' inboxes.

1 investor

Grouper is a social club that arranges group drinks between two groups of friends, typically three men and three women, to facilitate in-person meetups. It operates across major US cities and began in New York in 2011.

1 investor