Y Combinator Winter 2021 (W21) Companies

Per Diem builds a mobile app builder designed for local restaurant and coffee shop owners to compete with larger chains by turning customers into loyal patrons.

1 investor

Pesto Mastercard offers affordable credit for people with poor or limited credit history, positioning itself as an alternative to high-cost pawn loans. The product allows users to build credit history and improve credit scores through regular, on-time payments.

5 investors

Phoenix is a telehealth platform that delivers prescription medications for men's health directly to patients in Canada through an online assessment and licensed pharmacy partners. Patients fill out a health form reviewed by a licensed Canadian doctor, receive prescriptions shipped discreetly, and maintain ongoing access to their doctor via text messaging.

3 investors

PiBit provides underwriting software for commercial insurance carriers and managing general agents (MGAs) to improve profitability and decision-making. The platform uses technology to simplify complex underwriting processes in the insurance industry.

2 investors

PingPong provides video messaging capabilities for distributed teams, allowing asynchronous communication through short video, audio, and screen recording messages.

1 investor

PipeBio provides a bioinformatics platform for drug discovery that enables scientists and bioinformaticians to analyze genomic and assay data. The platform combines sequence data management, machine learning tools, and visualization capabilities to accelerate therapeutic development for academia, biotech companies, and pharmaceutical firms.

2 investors

Platypus is a platform that connects and automates data operations and processes across disparate systems and formats, serving both business operators and engineering teams.

1 investor

Playmaker operates a community platform for fantasy sports enthusiasts, offering a centralized social hub where players can build their identity, connect with peers, and enhance their engagement while watching live sports.

1 investor

Poliglota offers conversational language learning programs for English and other languages, combining group coaching sessions, practice clubs, and AI-powered practice through a method validated by Harvard research. The platform serves individual learners and small groups seeking to develop practical speaking skills rather than grammar memorization.

3 investors

Popl is an event lead capture and contact-sharing SaaS platform that uses AI to capture, contextualize, and manage connections made at conferences, trade shows, and networking events for enterprise teams. The platform serves large organizations and Fortune 500 companies seeking to streamline in-person business interactions and follow-up processes.

3 investors

PowerRouter provides lead routing and go-to-market workflow automation software for sales teams. The platform enables GTM teams to build and manage workflows without developer involvement.

1 investor

Preki provides e-commerce software for small businesses in Latin America to set up and operate online stores without coding or design skills. The platform enables merchants to launch storefronts and begin selling within minutes through a streamlined onboarding process.

1 investor

Prendea operates a subscription afterschool platform offering live classes to Spanish-speaking children aged 4 to 15, with a curriculum spanning arts, sciences, and other subjects.

1 investor

Prequel provides data integration and transfer capabilities that connect with multiple databases, data warehouses, and object storage services. The platform enables frequent, large-scale data exports without requiring customers to build custom pipelines for each platform.

3 investors

Procoto is a procurement platform that centralizes vendor management, sourcing requests, and contracts for purchasing teams. It serves organizations in sectors like public sector, property management, construction, and logistics that need to manage vendor sourcing and contract terms at scale.

2 investors

Promoted.ai provides ranking and search infrastructure for online marketplaces and e-commerce platforms, using machine learning to optimize relevance across search results, ads, and feed content.

4 investors

Prospa provides banking services tailored for small and medium-sized businesses.

4 investors

Purpose Finance provides environmental, social, and governance data about retailers to help customers make purchasing decisions aligned with their values, along with a rewards program.

1 investor

Grafana Pyroscope is an open source continuous profiling system that aggregates performance data and enables application teams to identify resource usage and performance bottlenecks down to the source code level. It integrates with Grafana and correlates profiling data with metrics, logs, and traces for comprehensive application observability.

2 investors

Quadrant Eye develops at-home diagnostic technology to conduct comprehensive eye examinations. The platform aims to increase access to eye care services and help prevent avoidable vision loss.

1 investor

Quadrant Health uses electronic health record and messaging data to forecast patient disease progression and enable early intervention.

3 investors

Queenly is an online marketplace where users can buy and rent formal wear across iOS, Android, and web platforms.

4 investors

Quicknode provides blockchain infrastructure services that enable developers and enterprises to build and deploy decentralized applications across multiple blockchains. The platform offers fast, reliable node access and developer tools for Web3 projects ranging from wallets and Layer 1 protocols to gaming and fintech applications.

6 investors

Quotabook provides investor relations management software for Korean startups and enterprises, enabling end-to-end management of fundraising, investor reporting, and financial data. The platform connects with 80% of domestic investors and integrates with KiiPS, South Korea's leading investor communication system.

3 investors