Y Combinator Winter 2021 (W21) Companies

Axle Health provides a logistics and scheduling platform for home health care providers that optimizes clinician routing, staffing decisions, and patient coordination through real-time data and predictive forecasting.

4 investors

Axolo is a Slack integration tool that centralizes GitHub code review workflows by creating ephemeral channels for pull requests, automating review reminders, and providing customizable notifications. The product targets engineering teams seeking to reduce code review delays and improve collaboration between developers.

1 investor

Indian matrimony and matchmaking app that helps users find genuine and verified profiles for marriage. The platform facilitates connections between individuals seeking matrimonial partnerships in India.

3 investors

BeWell Digital operates a platform that addresses inefficiencies in medical imaging interpretation, targeting the radiology market where diagnostic errors and delays remain common due to capacity constraints.

1 investor

Bimaplan offers life and health insurance products tailored for low-income households in India, delivered through a mobile-first platform. The company targets financially vulnerable populations in the region who previously lacked affordable access to such coverage.

3 investors

Biodock provides an AI image analysis platform designed for researchers and scientists to train, run, and interpret deep learning models on biological images without requiring coding expertise. The platform enables rapid model creation, distributed execution at scale, and detailed quantitative analysis for research organizations in biotech and life sciences.

3 investors

Blink operates a same-day delivery network for online retailers in Europe, fulfilling orders picked from physical stores or dedicated urban warehouses using crowdsourced couriers and optimized routing. The platform offers consumers order tracking and delivery customization.

2 investors

Bloom is an investment advisory and brokerage platform that helps individuals build wealth through stock investing, including fractional shares. The company offers advisory services to U.S. residents with brokerage accounts powered by Alpaca Securities.

5 investors

Bluelight helps broadcast and media companies build revenue plans based on real operational data and maintain live, automatically updated budgets for daily operations.

1 investor

A B2B marketplace where food service businesses such as restaurants, hotels, and cafeterias source and purchase supplies through a mobile or web platform.

1 investor

BotBuilt develops software and robotics technology for residential construction, automating framing and component manufacturing to reduce time, labor, and material waste in home building.

2 investors

brioHR is an all-in-one HR software platform that automates repetitive HR tasks and employee engagement for organizations. The product serves HR teams and business owners seeking comprehensive, user-friendly workforce management solutions.

5 investors

Bristle provides digital tools and insights to help people assess and improve their oral health, positioning dental care as a preventive step toward overall wellness.

2 investors

Broad is a fintech app that allows users to hold multiple currencies (British Pounds, Euros, US Dollars) and spend internationally using a physical or virtual card with real-time currency conversion and reduced fees.

1 investor

Bueno Finance offers a digital credit card accessible via UPI, targeting credit-building for underserved users in India.

1 investor

An omni-channel platform that consolidates marketing, customer support, and sales tools into a single dashboard. It enables businesses to engage customers across multiple channels, manage support conversations, and track customer drop-off behavior.

4 investors

Camber provides revenue cycle management infrastructure for specialty care practices, leveraging claims data and automation to reduce billing denials and accelerate reimbursement. The platform serves ABA therapy, physical therapy, and ENT/allergy clinics across the United States.

6 investors

A mobile platform where pet breeders and pet owners can connect, buy and sell pets, and access pet care resources through video content.

1 investor

A software client for managing governance operations in decentralized autonomous organizations (DAOs) built on the Nouns protocol.

1 investor

Care Weather operates a low-cost flat-panel radar satellite system that gathers high-precision weather observations for governments and maritime shipping operators. The satellite design achieves cost advantages through vertical integration, improved power generation, and orbital positioning closer to Earth's surface.

3 investors

Cashbook is India's first UPI wallet platform purpose-built for employee and vendor expense management. It provides instant wallet disbursements, real-time spend controls, intelligent dashboards, and accounting integrations for businesses managing expenses without corporate cards or manual reconciliations.

1 investor

Charge Running operates a mobile platform offering live, coached running classes and races where participants from around the world can join simultaneously and view each other's real-time performance metrics. The platform targets runners of all levels and combines group fitness with social features and competitive events.

1 investor

Chatwoot is an open-source customer communication platform that enables businesses to manage customer interactions across multiple channels. The company serves organizations seeking to enhance customer relationships through streamlined messaging and support tools.

1 investor

Cheqout offers a mobile point-of-sale system that enables retail and restaurant staff to process customer orders and payments directly from personal devices using QR code technology.

1 investor