Y Combinator Summer 2015 (S15) Companies
102 companies from the Y Combinator Summer 2015 batch, with their investors and founders.
80,000 Hours provides career research, an online guide, and one-on-one advice and introductions to help graduates choose careers that have a large positive social impact. It serves talented graduates seeking high-impact career paths.
1 investor
Afrostream is a subscription video streaming service offering films, TV shows, and web series focused on African-American and African content, with a library subtitled or dubbed for local markets. It targets audiences of African descent in Europe and sub-Saharan Africa, accessible on smart TVs, web, and mobile devices.
1 investor
Airmada designs and builds automated ground stations for commercial and industrial drones, handling drone protection, battery replacement, and mission launches. The stations are deployed on mission sites to operate drones autonomously and remotely for routine and on-demand data capture.
1 investor
Apollo is a global asset management and financial services company that manages capital across alternative and traditional investments, including credit, private equity, and insurance solutions for institutional and individual investors.
3 investors
Appcanary provides security tooling for software development, with a focus on web-scale engineering. The company was part of Y Combinator's S15 batch and was acquired by GitHub.
1 investor
Assembly installs cameras and remote monitoring software on factory assembly lines to verify quality compliance and generate an audit trail for Chinese factories and the OEMs that produce with them. It charges OEMs a per-unit fee and shares revenue with factories that demonstrate compliance with quality standards, aiming to reduce defect rates and warranty fraud.
2 investors
Auro Robotics builds self-driving shuttles for passenger transportation within campus-style environments such as universities, resorts, airports, and retirement communities. The company operates in the autonomous mobility and robotics sector.
3 investors
Bistrobot builds robots that automatically make sandwiches, aiming to reduce wait times and order errors in food service. The company operates in the food service robotics category.
1 investor
Bitmovin develops video infrastructure tools for OTT online video providers, including adaptive streaming HTML5 players and cloud-based video encoding. It serves enterprise video providers with developer-focused streaming and encoding products.
7 investors
Blitz Esports produces educational esports video content for games like League of Legends, CS:GO, and Overwatch, and builds an automatic League of Legends coaching app that uses computer vision and data analysis to give gamers in-game decision guidance. It serves esports fans and competitive gamers.
1 investor
Bluecrew runs an on-demand, data-driven staffing platform that connects businesses with hourly blue-collar workers for temporary, seasonal, and temp-to-hire roles such as warehouse staff, drivers, forklift operators, and event staff. It handles screening, matching, dispatching, and time tracking as a technology-based alternative to traditional temp agencies, operating in Los Angeles, the San Francisco Bay Area, Sacramento, and Reno.
5 investors
Bodyport makes a cardiovascular sensing weight scale paired with predictive algorithms and software that detect early changes in cardiac function to help care teams identify at-risk patients and prevent avoidable hospitalizations. The company initially targets heart failure patients and the clinical teams managing them.
7 investors
Branch8 provides a single platform for e-commerce sellers to list, update, and delist their products across multiple online marketplaces, along with logistics and order management. It aims to serve as a one-stop tool for online sellers to manage their multi-channel operations.
1 investor
Call9 provides emergency medicine and palliative care at patients' bedsides within skilled nursing facilities, using a proprietary platform that connects onsite Clinical Care Specialists with offsite emergency medicine physicians who diagnose and treat patients remotely. It serves elder-care facilities, aiming to reduce costs and improve quality of care.
2 investors
CareLedger provides employers with pricing data on local healthcare providers and incentives for employees to choose high-value, lower-cost care, with the goal of reducing company healthcare spend. It serves employers looking to control and lower their healthcare expenses.
1 investor
Chaldal is an online grocery shop that delivers everyday necessities to customers' doorsteps at no additional cost. It serves residents of Dhaka, Bangladesh.
7 investors
Circle Medical offers primary care through a hybrid model combining video and in-person clinic visits for patients across the United States. The healthcare company operates its own medical practice and underlying technology serving patients and providers nationwide.
9 investors
Cloudstitch offers a web developer platform that connects web and mobile apps to spreadsheets, replacing custom databases and their supporting infrastructure, with two-way syncing between the spreadsheet and the website. It serves web developers on the Google and Microsoft Office platforms and was acquired by Instabase.
2 investors
Cofactor Genomics develops predictive diagnostics using RNA data models and Predictive Immune Modeling to build biomarkers, with an initial application predicting which cancer patients will respond to immunotherapy. The company targets oncology diagnostics in the US precision medicine market.
11 investors
Confident LIMS offers a B2B SaaS Laboratory Information Management System (LIMS) for high-throughput labs in regulated industries. It currently serves most of the U.S. legal cannabis testing market and is expanding into agriculture, food & beverage, environmental, and industrial chemicals sectors.
2 investors
Convox provides a platform for deploying and managing cloud-native applications across multiple cloud providers including AWS, Google Cloud, and Azure. The platform abstracts infrastructure complexity to help development teams accelerate deployment cycles and reduce operational overhead.
4 investors
Cymmetria is a cybersecurity company focused on deception technology that lets organizations hunt attackers, detect lateral movement inside their perimeter, automate incident response, and mitigate attacks. It also provides deception as a service, allowing organizations to tailor deception technologies to their environments.
6 investors
Drip Capital is a trade finance and B2B commerce company that provides credit assessment and automated transaction workflows to help small and midsize businesses conduct cross-border trade. It serves SMBs worldwide, having facilitated over $8 billion in cross-border trade for businesses across 60 countries.
15 investors
Eden builds workplace management software for people-centric companies, with tools for managing physical offices including desk booking, room scheduling, and visitor management.
9 investors



















