Y Combinator Summer 2017 (S17) Companies

10by10 operates a platform that connects companies with software engineers across recruitment agencies. The service aggregates talent from multiple agencies in a single marketplace to simplify and accelerate tech hiring for growing companies.

1 investor

Advano manufactures silicon-based anode materials for lithium-ion batteries that improve energy density and reduce costs for electric vehicles. The company supplies engineered materials that integrate into existing battery designs.

8 investors

A commercial general contractor that serves clients in the San Francisco Bay Area and Nashville, providing construction project management with in-house software for cost tracking, budgeting, and real-time project transparency.

1 investor

Airthium manufactures high-temperature industrial heat pumps that reach up to 550°C and operate in hybrid mode, switching between electricity and gas to optimize cost and carbon emissions. The system is designed for industrial process heat applications requiring reliable 24/7 operation in the 150–550°C range.

2 investors

And Comfort sells clothing directly to consumers online.

1 investor

AssemblyAI builds Voice AI technology for speech recognition and processing applications. The company develops accurate, capable, and safe AI models used across various industries for voice-based applications.

3 investors

Audm is a mobile app that converts lengthy journalism articles into narrated audio content using professional voice talent, allowing users to consume written news in audio format.

2 investors

AutoHub provides a software platform for car dealerships to identify, appraise, and acquire inventory from existing customer interactions in service drives and online channels. The solution streamlines the vehicle acquisition workflow with data-driven valuations, pricing controls, and conversion tracking to improve margins and reduce acquisition costs.

1 investor

BillionToOne is a precision diagnostics company that uses molecular counting technology to develop non-invasive prenatal screening and liquid biopsy tests for early disease detection. The company focuses on making molecular diagnostics accurate, fast, and accessible to patients.

19 investors

BloomTech is an online coding and technology bootcamp that teaches in-demand skills to help students secure well-paying jobs. The school operates on an income-based tuition model and provides comprehensive job search support to its learners.

4 investors

Bumpline operates an on-demand tailoring service that brings alterations to customers at their location, similar to ride-hailing platforms.

1 investor

bxblue operates an online lending platform that serves Brazilian retirees and civil servants, targeting a market traditionally underserved by conventional financial institutions.

2 investors

Caelum Health develops software-based treatments for chronic digestive conditions including IBS, combining clinical data, medical expertise, and personalized coaching delivered through a digital platform.

1 investor

Cairns Health develops voice-activated software and radar-based monitoring devices for patients with chronic conditions, delivering medication reminders, symptom assessments, and activity tracking to coordinate care teams and reduce clinical costs.

1 investor

CCG.ai develops software that uses clinical and genomic data to help oncologists select appropriate cancer treatments for individual patients, with a focus on identifying predictive biomarkers linked to treatment response.

4 investors

Candidately is a software platform providing AI-powered tools and infrastructure for staffing agencies, including an AI resume builder, candidate search, talent marketplace, and client portal. The company serves staffing firms and recruiters seeking to modernize workflows beyond traditional email and spreadsheet-based processes.

1 investor

Carrot is a global fertility and family-building platform that provides access to fertility care, maternity support, and family-building guidance for individuals and families. The platform serves members seeking compassionate, personalized reproductive health support.

12 investors

Cashfree Payments is a full-stack payments platform that enables businesses in India to collect customer payments, process payouts, and handle cross-border transactions across 100+ payment methods. The platform serves businesses of all sizes and processes $80B annually, with capabilities including instant payouts, fraud prevention via its SecureID identity verification stack, and integration with major e-commerce platforms.

4 investors

A marketplace connecting people with cooking, baking, and tasting classes offered by restaurants and hotels in their local areas.

1 investor

Commissary Club operates a digital platform and community for people with criminal records, providing access to employment, housing, and legal resources alongside social connections, with AI agents that handle applications and referrals on behalf of members.

1 investor

A marketplace where collectors buy, sell, and trade collectible items such as vinyl toys, comics, and similar merchandise.

1 investor

D-ID develops an AI video creation platform that produces professional avatar videos and interactive visual agents for enterprise communication and customer experience. The platform serves organizations across industries for training, marketing, customer support, and brand messaging.

7 investors

Darmiyan develops medical AI and brain imaging software for early detection and monitoring of neurodegenerative diseases, particularly Alzheimer's. The platform targets healthcare providers, patients, and pharmaceutical companies seeking to advance brain health and disease prevention.

3 investors

Dharma Labs operates an Ethereum wallet that connects US bank accounts to decentralized exchanges, allowing users to purchase cryptocurrency tokens and access DeFi yield opportunities from a mobile app.

1 investor