Y Combinator Winter 2017 (W17) Companies

REZI operates an online marketplace where landlords list apartment vacancies and receive guaranteed rent payments, while tenants search for and apply to apartments without fees and with minimal paperwork.

1 investor

Riley builds a product for real estate agents designed to optimize workflows and increase lead conversion rates.

1 investor

Rippling is a workforce management platform that unifies HR, IT, finance, and employee data across a business. It integrates with 600+ applications to help organizations operate more efficiently.

31 investors

nCino Integration Gateway (formerly Glyue by Sandbox Banking) is an integration platform as a service (iPaaS) with pre-built connectors and low-code automation that links core banking systems, CRMs, loan origination systems, and fintech apps. It is built for financial institutions such as banks and credit unions, serving CTOs, heads of lending, and innovation leaders.

2 investors

Scaphold.io provides a GraphQL-based backend platform with integrated services like push notifications, analytics, and file storage for developers building mobile, web, and IoT applications.

1 investor

ScopeAI uses natural language processing to automatically identify and categorize patterns in customer support conversations, then surfaces these findings to product and operations teams. The platform integrates with customer service tools like Zendesk and Intercom to analyze feedback and extract actionable trends.

1 investor

Scribe provides an AI-powered sales assistant that automates prospecting, email personalization, objection handling, and meeting scheduling for inside sales teams. The tool helps sales organizations increase qualified meetings while reducing operational costs.

3 investors

Shipamax develops technology that automatically processes logistics documents into structured, machine-readable data, helping freight forwarding and supply chain companies reduce manual work across multi-party shipment operations.

3 investors

Sigma Genetics makes devices that use magnetic fields to introduce DNA, RNA, and other charged molecules into cells, offering advantages over electroporation including reduced arcing, better scalability, and reduced invasiveness for in vivo applications. The technology targets cell therapies, cancer drug delivery, DNA vaccines, biopharmaceutical manufacturing, and cosmetics.

2 investors

Sinovia manufactures printed light films that emit light uniformly across custom geometries, replacing traditional LEDs, PCBs, and optical components for products where space and thinness are constraints. The company serves manufacturers in consumer products, industrial, and specialty applications seeking thinner, faster, and more sustainable lighting solutions.

1 investor

Sleep Reset is a digital sleep clinic offering online treatment for insomnia and obstructive sleep apnea through cognitive behavioral therapy, at-home sleep testing, and clinician-guided care. The platform serves individuals struggling with chronic sleep issues and provides alternatives to traditional sleep labs and sleep medication.

1 investor

Smart Alto provides AI-powered lead generation and marketing automation software for real estate professionals, combining property data, owner/renter databases, and multi-channel outreach tools to identify and engage potential home sellers.

1 investor

Snappr produces and delivers photography, videography, and AI-generated images for clients with high-volume or individual project needs.

7 investors

Solugen develops a biomanufacturing platform using fermentation and bioprocessing technology to produce specialty chemicals at scale. The company serves customers in energy, chemicals, and related industries with cost-effective alternatives to traditional petrochemical-based manufacturing.

22 investors

A marketplace connecting consumers with freelance service professionals for tasks like moving, interior design, repairs, and home maintenance.

5 investors

SourceBeacon matches companies seeking products with vetted Chinese manufacturers and suppliers, handling the vendor sourcing and quote collection process on their behalf.

1 investor

Speak is an AI-powered language learning platform that uses a proprietary curriculum to teach users conversational language through personalized lessons, practice exercises, and real-time interaction with a tutor.

8 investors

Sudden Coffee produces premium, single-serve coffee packets made from sustainably sourced beans, designed for convenient consumption anywhere. The company emphasizes ethical sourcing, fair trade practices, and environmentally responsible packaging.

2 investors

A daily grocery delivery service operating in Indian cities that uses recurring milk subscriptions to optimize final-delivery logistics and enable same-morning delivery of groceries.

4 investors

Sycamore connects delivery drivers with job opportunities and provides transparent earnings information to help drivers select higher-paying work.

1 investor

Terark develops a database storage engine that supports queries directly on compressed data, delivering significantly faster read speeds and higher compression ratios than existing solutions for big data systems.

1 investor

Tetra provides automatic transcription and note-taking for phone calls and meetings, with human-edited transcripts delivered within 6 hours. The platform serves professionals and teams who need searchable call records and exportable notes integrated with productivity tools.

2 investors

The Centre for Effective Altruism promotes a framework for donors and volunteers to identify high-impact charitable causes and allocate their resources—whether financial or time-based—to maximize social benefit.

1 investor

The Essential connects consumers directly to home goods manufacturers, eliminating retail intermediaries and markups while maintaining product quality. The company sells luxury home furnishings at reduced prices by sourcing directly from factories.

2 investors