Y Combinator Winter 2018 (W18) Companies
142 companies from the Y Combinator Winter 2018 batch, with their investors and founders.
Correlia Bio develops the PIXI platform, a benchtop automated immunoassay system that uses proprietary microfluidic gel technology to quantify proteins from samples as small as 1 uL. Aimed at pharmaceutical and proteomics researchers, it offers a faster alternative to traditional ELISA for protein measurement in laboratory workflows.
6 investors
Culture Biosciences provides software and bioreactor hardware solutions for bioprocess development, enabling researchers to design, monitor, and analyze experiments remotely with cloud-native analytics and AI/ML insights.
5 investors
A platform where readers can discover short stories and provide financial support directly to the writers who create them.
1 investor
Dataform provides a platform for data teams to write, version control, and deploy SQL transformations across cloud data warehouses including Snowflake, BigQuery, and Redshift.
2 investors
Dear Brightly provides dermatologist-backed retinoid skincare products available over-the-counter to prescription strength, with education and coaching support to help customers build personalized routines. The company serves consumers seeking accessible skincare solutions focused on skin health and aging gracefully.
2 investors
Draftbit is a low-code platform that enables users to build web and mobile applications for iOS and Android using visual editing, AI agents, and integrated development tools. The platform serves app developers and builders seeking to reduce development time through drag-and-drop interfaces and direct code access.
5 investors
Edwin provides AI-powered English tutoring combining adaptive learning technology with human instructors, offering personalized one-on-one lessons to students seeking affordable language instruction. The company later merged with MyBuddy.ai to develop Buddy, a mobile voice-based English tutor targeting children globally who need conversational practice to reach fluency.
2 investors
EnvKey provides encrypted storage for application secrets and configuration data like API keys and database credentials, with a user interface for controlling access levels and integrating into development environments.
2 investors
Erudifi provides education financing solutions for students in emerging markets. The company aims to solve access to higher education through innovative financing mechanisms.
6 investors
Evry provides members with access to a team of nurses, nutritionists, and doctors who coordinate personalized care plans and help members navigate health services. The service bundles wellness programs, reward incentives, and care coordination for individual health plan members.
2 investors
One Health operates a clinical trial platform using canine cancer data to accelerate and de-risk human oncology drug development. The company leverages a dataset of 2 billion datapoints from dogs with naturally occurring cancer to serve as a comparative model for pharmaceutical R&D, helping drug developers validate efficacy and identify biomarkers before human trials.
12 investors
A mobile payment app serving unbanked users in Mexico that enables money transfers between individuals, merchant payments, and bill settlement through a smartphone.
1 investor
Fondo provides financial management and bookkeeping services to help startups track cash flow, burn rate, and runway. The company serves early-stage startups seeking accounting and financial visibility.
3 investors
Gainful makes personalized performance nutrition products and supplements. The company aims to simplify supplement selection through clearer nutrition labeling and ingredient transparency for consumers seeking nutrition support.
4 investors
Glimpse K12 provides analytics and evaluation tools for K-12 school districts to track instructional resource utilization, measure alignment between strategy and classroom practice, and identify which spending drives student outcomes.
4 investors
Glowing provides a messaging platform that allows brands to communicate with customers through popular mobile messaging services, targeting users who prefer text-based communication over traditional channels.
3 investors
Groww is an investment platform that allows users to buy and sell exchange-traded funds (ETFs) through an online portal. The platform serves retail investors, including beginners, seeking simplified access to diversified investment products.
5 investors
Haiku provides software tools spanning marketing optimization, design system management, and code animation for product teams.
1 investor
Helloverify provides automated background screening and identity verification services for employers, landlords, and other organizations in India, checking employment history, education, court records, and creditworthiness.
1 investor
A platform that enables communities to launch their own cryptocurrencies.
1 investor
Hunter2 provides hands-on application security training for engineering teams, using interactive labs where developers practice identifying and fixing vulnerabilities in web applications built with their specific technology stacks.
1 investor
Iambiq Technologies provides software for organizations to automatically read and process large volumes of text-based data, reducing manual human effort.
1 investor
Jasper provides an AI-powered platform for marketers and creators to generate and refine content. The platform helps marketing teams streamline content creation workflows and maintain brand voice across campaigns.
7 investors
Roblox is a platform where users create and play user-generated games and experiences, serving gamers and developers of various ages. The platform provides creation tools, social features, and infrastructure to support millions of concurrent experiences globally.
3 investors





















