Y Combinator Winter 2021 (W21) Companies

Journey.io helps founders, marketers, and salespeople deliver value; the company is operated by its CEO and co-founders who also acquire and operate SaaS companies.

1 investor

Juicy Marbles is a food company that produces meat products made through traditional methods without laboratory synthesis or artificial chemicals. The company focuses on creating food that nourishes both body and soul for consumers interested in wholesome, quality nutrition.

4 investors

June provides product analytics software for B2B SaaS companies, automatically creating visualizations of key metrics and enabling analysis across company and granular levels.

1 investor

Kanda provides point-of-sale financing for homeowners undertaking renovation projects through their general contractor partners, enabling customers to pay in installments rather than upfront.

2 investors

Kidato operates online classes for K-12 students in Africa with lower student-teacher ratios than traditional public schools, charging significantly less than private institutions while delivering internationally-benchmarked curricula.

2 investors

Kilobaser develops tabletop DNA and RNA synthesizers designed for laboratory professionals to produce custom oligonucleotides on demand. The company targets life science researchers and lab professionals seeking independent access to genetic material synthesis.

1 investor

Kitemaker is a product development and collaboration tool that helps teams plan, prioritize, and execute projects together. It emphasizes context-sharing and cross-functional communication over traditional task tracking.

2 investors

Kiwify is a platform for selling online courses and digital products, offering features like payment processing, member areas, affiliate management, and course hosting to content creators and educators in Brazil.

1 investor

Kodo provides corporate expense management software designed to simplify spend management for growing startups and enterprise organizations. The platform combines an intuitive interface with customer support to help businesses of all sizes track and manage corporate expenses.

2 investors

A lending platform that aggregates data from multiple sources to build credit profiles for trucking companies without formal credit histories, then connects them with bank loans in under a minute. The platform also provides trucking companies with tools for order management, invoicing, vendor payments, and collections.

1 investor

Financiera Inteligente is a Mexican lending company that provides mortgage financing products for residential properties.

4 investors

Lalabox is a live stream shopping platform that offers unique deals to consumers through QR-code based mobile access.

1 investor

Lamar Health provides workflow automation software for specialty pharmacies and infusion organizations, enabling teams to manage prior authorization processes and patient access workflows. The platform integrates with existing pharmacy and EHR systems to reduce manual work, delays, and denials while improving staff efficiency and patient treatment initiation times.

3 investors

Laudspeaker provides an open source platform for mobile marketing automation and customer onboarding, letting teams create segmented push notification, SMS, and email campaigns with complex scheduling rules.

1 investor

Launchcaster is a Web3 project discovery and curation platform that aggregates trending and newly launched crypto, NFT, and blockchain-based projects. It provides a newsletter and feed showcasing active projects primarily built on Farcaster and other onchain ecosystems.

2 investors

Lendflow provides a platform for fintechs, lenders, and vertical SaaS companies to offer lending and financial products to their customers. The platform enables businesses to automate lending processes and deliver faster, more transparent credit access.

6 investors

LightTwist provides a browser-based virtual studio environment where users can record and broadcast video content with remote participants using only a camera and web browser.

1 investor

Lion Pose develops dermatologist-formulated skincare products clinically tested on diverse skin tones to address conditions like hyperpigmentation, melasma, acne, and eczema. The brand adheres to a rigorous 5-point clinical testing standard including third-party validation and inclusive testing across all skin types.

5 investors

LiveFlow builds agentic accounting software that automates month-end close, account reconciliation, accounts receivable management, and journal entry drafting for multi-entity physical businesses. The platform also offers FP&A capabilities for consolidation, reporting, and budgeting, purpose-built for construction, healthcare, food & beverage, and retail operations.

4 investors

Logica is a financial planning and analysis (FP&A) platform designed for mid-market teams to replace spreadsheet-based budgeting and forecasting. It enables collaborative budgeting, iterative planning, and financial modeling with built-in version control and cross-functional alignment capabilities.

3 investors

LogisticsOS provides route optimization and planning APIs for delivery providers, e-commerce businesses, and transportation management systems. The platform uses algorithms to optimize thousands of orders in seconds, reducing delivery costs and improving operational efficiency.

1 investor

A marketplace for buying and selling secondhand goods with same-day pickup and delivery service in New York City.

1 investor

Lunatic is a WebAssembly runtime for building distributed services with isolated, lightweight processes supporting high concurrency and fault tolerance. It targets developers building scalable backend systems and microservices.

1 investor

Lygg develops a photostable chemical ingredient for skincare that provides enhanced protection against UVA radiation, tripling the effectiveness of existing FDA-approved options for sun damage prevention.

2 investors