Sam Altman

Driverless truck company based in San Francisco, California.

Clever is a company providing a learning management system that allows schools and school districts to have a central location to manage their technology.

Wevorce is a company offering a web-based technology and a community of attorneys, counselors and other experts to help couples going through divorce have amicable settlement. It participated in the W13 cohort of Y Combinator.

Custora is a company founded in 2011 by Jon Pospischil.

Spring Discovery is a computational drug discovery platform for age-related diseases founded by Ben Kamens.

Exec is a company providing a platform for finding and booking house cleaning service. It participated in the W12 cohort of Y Combinator.

On Change.org, people everywhere are starting campaigns, mobilizing supporters, and working with decision makers to drive solutions.

Quartzy is a lab management platform company founded in 2011 by Jayant Kulkarni.

Swiftype is a company building search software for enterprises, websites and applications. It participated in the W12 cohort of Y Combinator.

Humane develops and commercializes consumer hardware, software, and services.

FarmLogs is a company providing a platform that gives operational data insights to row crop farmers.

PlanGrid is a company providing a cloud-based construction document collaboration platform. It allows contractors and architects to share from their mobile devices and desktops project plans, markups, photos, specifications and reports. It participated in the W12 cohort of Y Combinator.

URX is a deeplink Search Engine founded in 2013 by Nathanael Smith, John Milinovich, Andrew Look and James Lawrence Turner.

Heap Analytics builds analytics infrastructure for online business. It was founded in 2012.

Quora is a question-and-answer website founded in 2010 by Adam D'Angelo and Charlie Cheever.

Virool is a company providing a programmatic video marketing platform.

Optimizely is an American multinational internet and technology corporation. It builds customer experience optimization software for enterprises.

Lob is a company developing and building APIs for automating mail and customer communications with print media. It participated in the S13 cohort of Y Combinator.

Coalition is a San Francisco-based cyber insurance and security company developing insurance products to help businesses manage their cyber risk.

Reddit is an online platform for social news. It allows communities to submit links, create content, and discuss any topic of their interest.

Patreon is a San Francisco-based crowdfunding platform for artists and creators founded by Jack Conte and Sam Yam in 2013.

Gusto is a company providing a cloud-based payroll, benefits, and human resources management platform.

Reserve is a stablecoin cryptocurrency.

Context lets you see what's happening on Web3

Trialspark is a company founded in 2013 by Benjamine Liu, kit dobyns and linhao zhang.

TipTop is a United States-based company founded in 2022 by Bastian Lehmann.

Meter is a company founded in 2015 by Sunil Varanasi.

Neuralink is a company that develops brain-computer interface (BCI) devices to assist people with paralysis and blindness and technologies that may expand the abilities of humans.

Helion Energy is a fusion power company aiming to build the world's first fusion power plant.

A company that manages company's cash flow, automating sending and receiving payments, finding errors, requesting authorization from supervisors and streamlining cash flow

Lattice is a people workforce management platform for goal management, weekly check-ins, and performance reviews.

Filecoin is a blockchain-based storage and cryptocurrency created by Protocol Labs backed by an application token.

Atmos provides an all-in-one platform to design and build a home.

Warp is a company developing a Rust-based terminal with artificial intelligence, aiming to modernize and upgrade the experience of using the command line interface (CLI).

Formerly E la Carte, Presto is a company designing and developing a tablet that offers digital dining services for restaurants.

Asana provides a project management platform to organize and plan workflows.

Airbnb is a company that provides an online platform for listing, searching, and booking rental accommodations.

Pinterest is a photo sharing, publishing website, social media web and mobile application company.

Stripe is a financial technology company providing software that allows businesses and individuals to make and receive online payments.

Oyster is a New York City-based company founded in 2013 by Willem Van Lancker.

Teespring is a company providing a commerce platform enabling users to design and sell products. It participated in the W13 cohort of Y Combinator.

Formerly DeviceKit-power, UPower is a company providing a middleware for power management on Linux systems. It participated in the S14 cohort of Y Combinator.

TriNet Zenefits is a software as a service (SaaS) company providing a digital human resources platform for small- and medium-sized enterprises (SMEs).

MobileWorks is a company offering a crowdsourcing platform. It participated in the S11 cohort of Y Combinator

Instacart is an internet-based grocery delivery service company.

Rescale is a company developing and providing software platform and hardware infrastructure for companies to perform scientific and engineering simulation.

Kami is an interactive digital classroom app for PDF & other types of documents.

Verbling is a company providing an e-learning platform for language over video chat. It participated in the S11 cohort of Y Combinator.

Rain AI is a company developing a new AI compute platform by co-designing every layer of the AI stack.

Boom Supersonic is a Colorado-based company developing supersonic commercial aircraft.

Beek is a book review site in Latin America founded in 2015.

Zero Down is a company that provide financing for homeownership which initially focused on San Francisco and the 'Bay Area'.

Hermeus is an Atlanta-based aerospace company focused on developing a hypersonic aircraft founded by AJ Piplica, Skyler Shuford, Michael Smayda and Glenn Case.

A nuclear energy company that is carbon-free and emission-free. Its headquarters are in Sunnyvale, California and it was founded in 2013.

Cruise is a San Francisco-based company developing self-driving vehicles. Cruise was acquired by General Motors in 2016.

Campuswire is a company founded by Tade Oyerinde.

Nautilus Labs is a New York-based company founded in 2016 by Brian O'Clair.

Wave is an African mobile money app that allows users to deposit, withdraw, pay merchants and pay bills for free.

Cerebras is an AI company building computer systems designed to accelerate AI workflows.

TrueNorth is a San Francisco-based logistics company founded by Jin Stedge.

HelixNano is a Cambridge, Massachusetts-based biotechnology and artificial intelligence company founded in 2013 by Hannu Rajaniemi and Nikolai Eroshenko.

Code Academy is a Chicago-based company founded in 2011.

Company that helps users build more accurate computer vision models, faster.

Journey Colab aims to develop FDA-approved psychedelic therapies, starting with synthetic mescaline.

Computational chemistry platform to develop small molecule therapeutics

Aspen Neuroscience develops autologous iPSC-derived cell replacement therapies for Parkinson’s disease and other CNS disorders.

Quill is a San Francisco-based company.

Beacon AI is a San Francisco-based company building an AI Copilot to enable flight safety for commercial and private fleets.

Brinc is a Las Vegas-based drones company.

Coco is a remote-operated robot food delivery service company based in California.

Worldcoin is a cryptocurrency and digital ID project working to develop identity verification based on biometrics.

Soylent is a company that creates nutrition products.

Rewind is a developer of a search engine for meetings to transform them into searchable and shareable video and text.

Vital Biosciences is a blood testing company.

Campus is a New York City-based education company.

Retro Biosciences is a cell reprogramming.

Alt is a San Francisco-based company founded in 2020.

Meanwhile is a Bitcoin-backed life insurance company.

Magrathea is radically reducing the socioenvironmental impacts of making structural metal.

Uncommon, formerly known as Higher Steaks, is a cellular agriculture company based in London, England founded in 2017 by Benjamina Bollag, Stephanie Wallis and David Hay working to develop pork and other meat products using cellular agriculture.

Motion is a Mountain View, California-based software development company offering a time management and productivity app.

Nervana Systems was a San Diego-based company focused on the development of artificial intelligence and deep learning software. The company was acquired by Intel in 2016.

Codecademy is a company providing a platform based on web and mobile that teaches digital skills to users. It participated in the S11 cohort of Y Combinator.

Arkham is an intelligence platform that provides information on the real-world entities and individuals behind crypto market activity.

OpenAI is an AI research and deployment platform.

Y Combinator (also known as YC) is a US-based seed accelerator, which was started in March 2005.

OpenResearch is a nonprofit research lab of Y Combinator.