Y Combinator Summer 2018 (S18) Companies
130 companies from the Y Combinator Summer 2018 batch, with their investors and founders.
64x Bio develops cell-line engineering and production technologies to overcome manufacturing bottlenecks in advanced and next-generation therapies. It serves biopharma and therapeutics developers by combining large-scale parallelized screening with computational analysis to engineer high-yield cell lines.
6 investors
Activeloop builds a continual learning layer for coding agents that captures agent interactions, codifies them into reusable skills, optimizes those skills, and propagates them across a team's AI coding agents. It works with tools like Claude Code, Codex, and Cursor and stores customer traces and data on the customer's own cloud storage, serving engineering teams building with AI agents.
10 investors
Aesthetic offers an AI tool that learns a user's personal design style and generates matching high-quality visuals, serving designers and other creatives.
2 investors
Ajaib is an online brokerage that lets Indonesians buy and sell stocks, ETFs, and mutual funds through its investment platform. It serves retail investors in Indonesia and positions itself around financial inclusion and investment education.
6 investors
Allotrope Medical develops a surgical stimulation technology that lets physicians use electrical stimulation to control smooth muscle movements in the urinary and digestive systems, helping surgeons locate hidden anatomic structures such as ureters and sphincters, assess tissue health, and aid diagnosis. The medical device delivers this capability through surgeons' existing instruments for intraoperative use.
6 investors
Alpha Vantage provides realtime and historical financial market data APIs covering stocks, ETFs, forex, commodities, and economic indicators for investors, researchers, and developers.
2 investors
Anima builds a design intelligence platform that converts visual designs into working code, powering visual-to-code workflows for software developers and AI agents. The platform serves developers, design teams, and AI-powered coding platforms, enabling translation from design intent to production software.
4 investors
AnnieCannons runs a trauma-informed coding and workforce development program that trains human trafficking survivors to become software developers and AI engineers, then places them in paid apprenticeships with partner companies. It serves survivors who have faced barriers such as poverty, housing insecurity, and interrupted education.
1 investor
Apprentice Health deploys location sensors and software in hospitals to track patient and staff movements, identify inefficiencies in clinical workflows, and provide targeted recommendations for improvement. It serves hospitals in the healthcare industry.
3 investors
AskMyClass (Soundkins) is an audio learning assistant that runs on smart speakers such as Alexa to help K-12 teachers with classroom management, social-emotional learning, and lesson support. It aims to save teachers time and help students stay on task and build life skills.
1 investor
Avo operates a virtual marketplace embedded in residential and office buildings, delivering groceries, goods, and services to tenants by partnering with building operators to acquire their tenants as customers. It serves residential and commercial building operators and their tenants, operating in New York, Chicago, Houston, and Israel.
3 investors
Berbix provides ID verification and fraud detection technology that companies access through developer SDKs to confirm their users' identities. It serves online platforms across a range of industries needing to validate user IDs.
3 investors
BHRD ("Be Heard") provides tools to help public companies communicate with their investors. It serves publicly traded companies in the investor relations space.
1 investor
BlueCargo builds automated software for managing the financial and operational transactions of freight and logistics, offering shippers audits and a platform to optimize their supply chains. It serves global shippers and logistics businesses in the logistics industry.
8 investors
Bot MD builds an AI clinical assistant for doctors that can be trained on a hospital's content to answer clinical questions. It serves physicians and healthcare organizations, with a focus on large emerging markets.
7 investors
BrainHi provides an AI-powered automated receptionist that answers missed phone calls 24/7 for local businesses, chatting with clients to schedule appointments and answer administrative questions. It serves local businesses, with origins in Puerto Rico.
3 investors
C16 Biosciences uses a biomanufacturing platform to produce sustainable alternatives to oils and fats for consumer product supply chains, with its first product being an alternative to palm oil. It serves companies that use oils and fats as ingredients, operating in the biotech and materials industry.
12 investors
Calii operates a full-stack grocery delivery service in Latin America, delivering fresh produce and grocery items to consumers' homes in under two hours. It connects directly with producers and brands and uses a network of micro-fulfillment centers to automate the food supply chain end-to-end.
7 investors
Canary Technologies builds software that digitizes paper-based hospitality workflows for hotels. Its tools are used by hotel groups and chains worldwide.
15 investors
CB Therapeutics engineers microbes to biomanufacture high-value natural ingredients used in medicines, supplements, and wellness products. The company builds biological supply chains for rare natural compounds aimed at treating disease and supporting longevity.
7 investors
Circumvent is a pharmaceutical and biotech company that studies monogenic disorders to inform the development of treatments for complex diseases. It applies genomics and neurotechnology approaches to drug discovery.
1 investor
Clear Gene develops diagnostic tests used in cancer care that indicate to doctors whether a tumor has been fully removed. The company operates in the oncology and women's health diagnostics space.
4 investors
College Pulse is a research and analytics company that collects and analyzes opinion data from college students, drawing on a panel of over 700,000 student participants across 1,500 U.S. universities. It helps clients understand the college demographic through survey and polling data.
4 investors
Contrast builds a developer handoff tool for frontend teams that connects Storybook Stories, design tokens, and Figma components so developers can inspect designs. It works inside Storybook and is aimed at frontend developers and designers.
1 investor























