Founders Directory LogoFounders Directory

Discover the next generation of startups.

A curated directory of high-growth companies backed by the world's most prestigious venture capital firms.

914Companies

VC Backer

All VCsYCombinator

Industry

All IndustriesB2BMarketplaceTravelFintechConsumerHealthcareEducationIndustrialsReal Estate and ConstructionGovernmentUnspecified

Employees

Any Size1-1011-5051-200201-500501+

Stage

Any StagePre-SeedSeedSeries ASeries BSeries C+

Raised

Any Amount< $1M$1M - $5M$5M - $20M$20M+
/
SortA-Z
Flick logo

Flick

YCombinator

We Handle AI. You Direct Films.

Flick is an AI filmmaking software that lets people create Hollywood-level short films completely using AI end-to-end. There are many AI tools that can give you 8-second casual clips to post on social media, but when it comes to creating truly high-quality films with coherent storylines, consistent characters, and cinematic aesthetics, they don’t come close due to their lack of flexibility, creative control, and fragmented creative flow. Founded by an award-winning filmmaker and a founding engineer at Instagram, Flick defines an interface specifically designed for native AI filmmaking that feels natural and enables end-to-end creative flows. Think of Flick as Figma for AI filmmaking. There are 4 complete AI short films created using Flick that got 20+ awards in international film festivals already and our early creator residency community are generating several AI short films every week. We are also building a community where we produce our own AI films as well as collaborating with other well-known filmmakers to share their “behind-the-scenes” workflows as resuable templates to inspire users in our community. We not only build product, we also build world-class content. The whole film industry will be revolutionized by AI and our goal is to be “the product” that defines this category.

San FranciscoY Combinator LogoFall 2025ActiveArtificial IntelligenceCreator EconomySan Francisco
Flightfox logo

Flightfox

YCombinator

A platform to plan, book and manage global and group travel.

Flightfox is a travel management platform for organizations with complex travel needs. We combine technology with human expertise to plan, search, book, monitor and manage global and group travel. We typically work with study abroad programs, humanitarian organizations, and other organizations with global reach.

Boulder, COY Combinator LogoSummer 2012ActiveB2BTravel
Flip logo

Flip

YCombinator

Community-driven marketplace for sneakers.

FLIP is everyone’s sneaker connect — the premier specialty destination where people find and sell hard to find, rare, limited edition sneakers. They have created a community where their members can buy and sell with confidence and ease. Never miss out on an opportunity to place your bid on hard to find sneakers in 90 minutes from a curated list of quality sellers who really care. Their mobile only platform is currently available for your iPhone and coming soon to Android. They strive to keep an open and trusted environment for their community.

Los Angeles, CAY Combinator LogoWinter 2015ActiveMarketplaceLos Angeles
Flirtey (SkyDrop) logo

Flirtey (SkyDrop)

YCombinator

Flirtey is the world’s first commercial drone delivery service and…

Flirtey is the leading drone delivery service. We are reinventing the on-demand economy with our network of flying robots for last mile delivery. Our mission is to save lives and change lifestyles by making delivery instant. Flirtey’s drone delivery service is faster, more efficient and the ultimate customer experience. We’re rapidly growing our team and achieving a record number of historic firsts in the drone delivery industry, advancing autonomy, safety systems and advanced delivery technology. If you are interested in having your goods delivered via Flirtey, or joining the team that is transforming the delivery industry, visit www.flirtey.com Recent Company Milestones: - October 2017 – Announced a partnership to launch the first automated external defibrillator (AED) drone delivery service in the U.S. - January 2017 – Raised $16 million in Series A funding from top Silicon Valley investors. - August 2016 – Launched the world’s first commercial pizza-by-drone delivery model in partnership with Domino’s. - July 2016 – Conducted the first fully autonomous, FAA-approved drone delivery from a store to a home in partnership with 7-Eleven. - June 2016 – Completed the first fully autonomous, FAA-approved ship-to-shore drone delivery in collaboration with Johns Hopkins. - April 2016 – The Flirtey drone used to make the first FAA-approved delivery in the U.S. accepted into the Smithsonian’s National Air and Space Museum, alongside the Space Shuttle Discovery and the Wright Flyer. - March 2016 – Conducted the first fully autonomous, FAA-approved urban drone delivery in the U.S. - July 2015 – Completed the first FAA-approved drone delivery on U.S. soil in collaboration with NASA Langley Research Center. - Summer 2015 – Graduated Y Combinator. - 2013 – Founded the first drone delivery service in the world.

Reno, NVY Combinator LogoSummer 2015ActiveDronesDelivery
Flock Safety logo

Flock Safety

YCombinator

The first public safety operating system that eliminates crime.

Flock Safety provides the first public safety operating system that empowers private communities and law enforcement to work together to eliminate crime. We are committed to protecting human privacy and mitigating bias in policing with the development of best-in-class technology rooted in ethical design, which unites civilians and public servants in pursuit of a safer, more equitable society. Our Safety-as-a-Service approach includes affordable devices powered by LTE and solar that can be installed anywhere. Our technology detects and captures objective details, decodes evidence in real-time and delivers investigative leads into the hands of those who matter. While safety is a serious business, we are a supportive team that is optimizing the remote experience to create strong and fun relationships even when we are physically apart. Our flock of hard-working employees thrive in a positive and inclusive environment, where a bias towards action is rewarded. Flock Safety is headquartered in Atlanta and operates nationwide. We have raised $150M in our Series E led by Tiger Global at a $3.5B valuation.

Atlanta, GAY Combinator LogoSummer 2017ActiveHardwareMachine LearningSaaS
Floot logo

Floot

YCombinator

The easiest way for non-coders to build apps with AI.

Floot lets non-coders & entrepreneurs build real web apps that actually work. We’re taking a new approach by building everything from the ground up for AI. ✨ Try building an app at floot.com Existing AI app builders fall short of enabling non-coders to build real, serious apps. They often: - Break down when building anything more than a prototype or toy app - Have non-coders stuck with errors they don’t understand - Require non-coders to handle multiple services designed for developers (e.g. for backend, database, hosting, etc) The fundamental problem: these AI app builders just cobble together existing developer tools and slap AI on top, but these tools were designed for humans and not for AI. The result? Non-coders get excited, start building, hit a wall, and then abandon their projects. Floot is purpose-built for AI. Our secret sauce: 1) Instead of reusing a coding framework designed for humans, we created a specialized framework that dictates how AI should write code and how the code runs on our infrastructure. This allows us to enforce best practices, detect errors earlier, and give the best feedback to the AI. As a result, Floot can write better code and fix issues more effectively. 2) Floot has the entire tech stack built-in (backend, database, hosting, etc) so building and managing an app feels seamless, especially for non-coders. And because we control every layer of the stack, we can optimize each layer for AI-first coding. Because of this, non-coders can get more done with less time and prompting. They can finally build serious apps that work, instead of getting stuck in frustrating error loops and then abandoning their projects. We also built a highly scalable hosting system directly on AWS so Floot apps can handle real traffic and business demands. This means non-coders can build, deploy, and scale their apps on a single platform seamlessly. Plus, Floot is really fun to use! Try building an app at floot.com

San FranciscoY Combinator LogoSummer 2025ActiveSaaSNo-codeWeb DevelopmentAISan Francisco
Floracene logo

Floracene

YCombinator

Optimized medical device purchasing for independent providers

Floracene shows independent surgery centers the best-priced equivalent implant for every procedure based on their manufacturer contracts. Every orthopedic surgeon we've talked to says the same thing: 90%+ of expensive implants they use are clinically interchangeable, but the choice comes down to habit, brand comfort, or the device rep. US surgery centers spend ~$7B a year on implants, and in orthopedic and spine cases the implant alone runs ~40-60% of the total cost of the procedure. Roughly ~20-30% of that spend is recoverable by switching to a clinically-equivalent device. Instead of defaulting to the implant they trained on, a surgeon sees the 3+ equivalent options side by side and switches to the one that protects the case's margin. Asaph and Jonah met on the hospitals team at Palantir two years ago, and have each spent the last four years in the plumbing of US healthcare: claims, eligibility, and payor contracting. Asaph was an early PM at Garner. Jonah was a founding engineer at Metriport (YC S22) after starting his own fax-automation startup for fertility clinics. At a big hospital the surgeon picks the implant but isn't spending their own money, so price doesn't impact the decision. At an independent surgery center the physicians own the economics, so a cheaper equivalent goes straight to their bottom line. They have every incentive to switch. They just don't have the information or the tooling.

New York City, NYY Combinator LogoSummer 2026ActiveHealth TechMedical DevicesDigital HealthProcurementHealthcare IT
Florin logo

Florin

YCombinator

The financial operating system for the companies building the future.

Florin brings banking, payments, cards, and treasury into one account built for startups - so founders can hold, move, and grow their capital without stitching together half a dozen tools. Unlike platforms that resell another bank's rails, we're building the infrastructure ourselves, end to end, so money moves in real time on a single ledger we own. We start with an invite-only membership for venture-backed companies and expand from there. Named after the florin, the coin that anchored global trade for three centuries, with infrastructure built for how money moves now.

San FranciscoY Combinator LogoSummer 2026ActiveArtificial IntelligenceBanking as a ServiceFintechFinanceNeobankSan Francisco
FlowManual logo

FlowManual

YCombinator

AI for Construction's Back Office.

FlowManual is the all-in-one AI bidding and purchasing platform for both general and specialty construction contractors. Built by two engineers and Harvard dropouts, FlowManual automates the buying process during pre-construction. With FlowManual, specialty contractors win more work while general contractors deliver at higher standards.

San FranciscoY Combinator LogoSummer 2026ActiveSaaSConstructionWorkflow AutomationSan Francisco
flowscope logo

flowscope

YCombinator

AI-native consulting to map and automate business processes

flowscope is an AI-native transformation consulting firm that deploys agents to map, optimize, and automate companies’ processes end to end without human intervention; doing what consulting firms charge millions for at a fraction of the cost and time.

San FranciscoY Combinator LogoSpring 2026ActiveSan Francisco
PreviousPage 29 of 92Next