Y Combinator Winter 2017 (W17) Companies

lvl5 creates high-definition mapping technology used by autonomous vehicle developers for navigation and localization.

3 investors

MarketFox operates an affiliate content site that reviews and ranks offshore online pokies (slots) and casino platforms accepting New Zealand players, scoring them on licensing, bonuses, withdrawal speed and payment methods. The site targets NZ players and covers game providers, payment options, responsible gambling resources, and the country's upcoming DIA-licensed regulated market.

1 investor

MDalgorithms develops AI-powered personalized skincare and hair care solutions, including treatments for acne, hair regrowth, and anti-aging. The company uses machine learning models and proprietary image analysis technology to deliver customized treatment kits tailored to each user's specific skin and hair profile.

2 investors

Mednet is a platform where physicians share clinical knowledge and answer peer-reviewed questions across 23 medical specialties. The platform connects over 45,000 verified physicians to improve medical decision-making through collective expertise.

1 investor

Mirror AI creates personalized emoji sets from facial photos, generating dozens of custom emoji characters that users can share across messaging and social media platforms.

1 investor

Nanonets provides AI agents that automate document-heavy, complex business processes by extracting structured data from documents like invoices and purchase orders, then executing workflows across finance, operations, and healthcare systems. The platform integrates with existing enterprise tools and uses a proprietary OCR model to handle edge cases that undermine agent reliability.

3 investors

Neema offers a mobile financial platform serving underbanked Americans, combining a digital wallet, check cashing, international remittances to over 90 countries, and a debit card for in-store and ATM access.

2 investors

Niles is a Slack integration that captures conversations and documents to build a team knowledge repository accessible in real time.

1 investor

Nomba offers banking and payment processing services to businesses across Africa, with a focus on Nigeria and the Democratic Republic of Congo.

4 investors

Nuvola develops SafeCoat, a separator material for lithium-ion batteries designed to improve safety, performance, and manufacturing efficiency. The company serves battery original equipment manufacturers globally with its advanced coating technology.

1 investor

OneFin provides loan origination, loan management, collection, and accounting software systems for banks and NBFCs. The platform offers low-code configurable workflows, APIs, and integrations with 70+ external services to enable end-to-end loan lifecycle management.

1 investor

Origin makes kiosks for office break rooms that dispense frozen smoothie pods which blend into drinkable beverages in under a minute, generating revenue through high-margin pod sales while positioning the kiosk as an entry point for additional workplace food and beverage offerings.

2 investors

Pearl manufactures single-serve coffee and tea machines with proprietary brewing technology for offices, hotels, and restaurants, using compostable pods filled with whole bean coffees and teas from specialty roasters rather than traditional plastic pods. The company also provides installation, maintenance, and inventory management services tailored to each location.

1 investor

Peer5 provides a peer-to-peer content delivery network that augments traditional servers to distribute video streams to viewers, reducing server load and improving playback reliability for publishers of live and on-demand content.

4 investors

Penny was a personal finance application that helped users track income and spending through conversational interactions. The app was acquired by Credit Karma and is no longer available.

1 investor

Pit.AI develops AI systems that automatically discover and execute trading strategies for investment management by analyzing market data to identify inefficiencies, rather than relying on human forecasting models or portfolio optimization assumptions.

1 investor

Plane is a payroll and HR platform designed for automation-first teams, offering open APIs, CLI, and MCP integrations so agents and software tools can directly manage payroll operations. It serves startups and companies with diverse workforces spanning U.S. employees, global contractors, and EOR hires across 100+ countries.

2 investors

Playment provides data, technology and intelligence solutions for training frontier AI systems, including annotation, collection and post-training services for machine learning and multimodal AI models. The company serves model development teams building generative AI, agentic AI and physical AI systems.

1 investor

Pulse provides an iPad application that allows Indian physicians to digitize and store patient medical records electronically.

1 investor

Rally Tennis operates a mobile app that connects tennis players to local leagues, practice partners, and competitive play opportunities.

1 investor

RankScience is a local SEO agency that helps San Francisco Bay Area businesses improve their visibility in search results through Google Business Profile optimization, citation building, content creation, and review management. The company serves local businesses and enterprises seeking to increase organic customer acquisition in competitive Bay Area markets.

2 investors

Reliance Health provides healthcare services combining medical expertise with technology for individuals and corporate customers in growing economies. The platform aims to make quality healthcare accessible, affordable, and integrated into daily life through a network of health providers.

3 investors

Request Network is an open-source, non-custodial payment protocol that lets businesses accept and send stablecoin and crypto payments across multiple EVM chains and Tron, with funds moving directly wallet-to-wallet and a transaction reference attached for reconciliation. It serves crypto-native businesses such as iGaming operators, SaaS companies, and payment service providers via an API, dashboard, and payment links, charging fees starting at 0.25% per transaction.

2 investors

Retool is a platform for building and governing internal tools, admin panels, and dashboards across teams. It provides AI-assisted development, visual builders, and React integration with centralized security, compliance, and data access controls.

6 investors