Nov 13, 2025 02:26:37 AM

Companies


Showing 201-225 of 322 companies
YC W20
Pashi logo

Pashi

Pashi builds software to operate and optimize production lines.

YC S18
P

Passenger AI

Software for robotaxi operations.

Software for robotaxi operations.

YC S17
Passerine Aircraft logo

Passerine Aircraft

Passerine Aircraft is building the next generation of dronesWe are…

Passerine Aircraft develops electric-powered aircraft that can attain flight speed using a jumping mechanism.

YC W25
Pave Robotics logo

Pave Robotics

Robots that repair roads

Pave Robotics builds robots that seal cracks in asphalt, helping paving companies save time and money. Our robots work 24/7 and deliver higher-quality results than humans.

YC W12
Per Vices logo

Per Vices

Building Mission Critical Software Defined Radio products.

Per Vices builds the highest performing Software Defined Radios for mission critical applications for industries that can't live without them. Our products are modular, easy to use, provide the best possible performance, and replace a number complex sub-systems and components. Customers developing wireless applications use our products because they dramatically lower integration and development complexity, total cost of ownership, and time to market. Our proprietary, industry leading, technology provides the best performance and maintains an efficient abstraction layer that allows customers to easily incorporate our product into their application.

YC S25
Perseus Defense logo

Perseus Defense

America's Golden Dome for Drones

Perseus Defense is building a mass-manufactured Counter UAS solution for the Department of Defense and Department of Homeland Security. Current solutions are one-to-one, too dangerous for use on U.S. soil, and orders of magntiude more expensive than the threats they defeat. Our self-guided missile platform is man-portable and multi-domain capable. It senses, engages, and eliminates threats with drastically reduced cost per engagement over existing kinetic solutions. Solving this critical national security problem requires understanding complex DoD needs along with actual rocket science including aerodynamics, guidance, navigation, control, and much more. Jason and Steve met at Penn State while they pursued their PhD and MS in aerospace engineering, respectively. Their past experiences designing space helicopters for NASA, making Boeing airliners land autonomously, controlling swarms of unmanned autonomous systems, teaching aerospace engineering at Stanford, winning multiple ONR and DOE engineering competitions, and founding an international drone competition makes them the perfect team to create transformative solutions protecting our service members. "If you build this, it will be mandatory equipment for every truck, boat, and convoy in the U.S. Military. We're talking thousands of units." - Former DoD Procurement Officer The White House just released Executive Order, "Unleashing American Drone Dominance" which adds billions of dollars, government support, and streamlined regulations to enable the development of our product. Traction: Jason and Steve used more than 100 end-user interviews across the DoD and DHS to shape the product to something of critical need to both boots on the ground and DoD purchasers. In 8 short weeks following a strict 2-week design-build-test cycle, the team has gone through 4 major guided missile iterations with over 30 live-fire flight tests. They were invited to Ft. Hood to present their platform to the 1st Cavalry Division, and also briefed the Pentagon and U.S. congressmen on current U.S. vulnerabilities to advanced drone technology. Perseus Defense is actively standing up cooperative research agreements with U.S. Army DEVCOM's Applied Research Laboratory, Aviation and Missile Center, Armaments Center, and High Performance Computing Modernization Program.

YC W22
Phase Biolabs logo

Phase Biolabs

We make carbon negative chemicals from CO2 using fermentation

Phase Biolabs makes carbon negative solvents and electro-fuels from carbon dioxide (CO2) using fermentation. You can read more about what we are building in our Hacker News article: https://news.ycombinator.com/item?id=30557288 Phase Biolabs is also supported by Bill Gate's Breakthrough Energy Foundation via their Innovator Fellowship program.

YC S18
Phiar logo

Phiar

We are developing a revolutionary AI-powered augmented reality…

At Phiar, we are building the first AI-powered AR navigation driving software solution that runs on a smartphone and in-vehicle displays, utilizing our ultra-lightweight road understanding AI that runs completely at-the-edge, in real-time, all on just a smartphone-level compute. Our mission is to enhance driving safety, facilitate more intuitive wayfinding, and connect drivers with their surrounding environments.

YC W22
Phoenix Hydrogen logo

Phoenix Hydrogen

First commodity marketplace for hydrogen.

Phoenix Hydrogen is building the first commodity marketplace for hydrogen. This year, $9.5B in federal grants will fund the first hydrogen grids, but this ecosystem has no marketplace. We’re uniquely able to build one because we’re already working with big utilities on a fulfillment platform: a 1000'-tall underground warehouse for hydrogen.

YC S21
Phykos logo

Phykos

Growing seaweed to stabilize the climate.

YC S15
PickTrace logo

PickTrace

Workforce Management for Large Farms

PickTrace is a fast growing software company that provides workforce and harvest management solutions for large-scale farms. Founded by brothers Austin and Harrison Steed, PickTrace is building the farm management system of the future. PickTrace builds powerful software products that help agriculture companies thrive. Our workforce and harvest management software helps growers gain insight into their operations and improve their operational efficiency. Everything that we do is based on the conviction that we succeed when our customers build a more efficient, compliant, and profitable operation.

YC S24
Piggy Robotics logo

Piggy Robotics

Humanoid robots that do your chores for the price of an iPhone!

We build humanoid home robots powered by artificial muscles. Compared to motor-driven robots, ours are lighter, softer, safer, and stronger for their weight. Richard dropped out of medicine at Oxford and Chenny left her Oxford PhD in computer science to build the full stack—from custom actuators to embodied AI. We went from zero hardware experience to a full humanoid prototype in just 2 months.

YC W22
Pina Earth logo

Pina Earth

Unlocking carbon markets for European forest owners

Pina Earth is building a suite of digital tools for data collection, monitoring, and certification of forest carbon projects. EU forests are at high risk due to climate change. With Pina Earth, forest owners can start high-quality carbon projects on their properties and use the new income stream to prepare their forests for a changing climate. Founded only last year, the startup already has active pilot projects on over 1,000 hectare (∼2,500 acres) in Germany. The founders met at CDTM and joined their expertise in sustainability science, software engineering, and machine learning to help EU forests.

YC W24
Pivot Robotics logo

Pivot Robotics

AI for Robot Arms in Factories

Pivot Robotics makes AI software for robotic arms that helps manufacturers automate their most labor intensive tasks. We are starting out with the dangerous task of metal grinding and are currently deploying our software on 10+ robots in a cast-iron foundry.

YC S24
Plume logo

Plume

Renewable infrastructure deployment at scale.

Plume is an AI-powered geospatial platform for site selection in energy infrastructure projects. Selecting the right sites requires analysis of +50 geospatial, grid, and regulatory constraints across fragmented data sources. Plume changes the process by enabling users to interact with geospatial data using natural language.

YC S22
Polymath Robotics logo

Polymath Robotics

General Autonomy for Industrial Vehicles

Polymath is building a general autonomy stack for cautious vehicles. Our software allows any industrial vehicle - whether it's a tractor in a field or a bulldozer in a mine, drive itself. We bundle together AI, ML, Controls, ROS, Safety and best-in-class deployment practices to enable our customers to tell automated vehicles to do via a REST API. We're on more robots than we have engineers, are seeing our revenue (and robotic fleet) grow rapidly, and are looking for folks who want to help automate the world.

YC W22
Posh logo

Posh

Rapidly deployable energy solutions for modern commercial and…

We are working on rapidly deployable energy storage and power generation solutions for C&I customers, especially in the AI data center space.

YC X25
PowerMatrix logo

PowerMatrix

Efficient and compact power supply for AI hardware

PowerMatrix provides the MOST efficient and compact next-generation high-performance power supplies for emerging technologies, such as GPUs, xPUs, AI server, datacenters, drones, EV, aerospace, etc. Based on patented circuit topology, embedded packaging, and novel magnetics, our power supply systems can reduce energy loss by up to 50%. We have developed several prototypes and are collaborating with world-leading customers.

YC W20
PowerX logo

PowerX

AI powered sensors that save energy, water and emissions

PowerX AI powered sensors create proprietary data to save corporations 30% or more in energy, water and emissions. 

YC S16
Prime Lightworks logo

Prime Lightworks

Prime Lightworks Inc. manufactures electric propulsion systems for…

Prime Lightworks Inc. manufactures electric propulsion systems for space satellites.Their goal is to engineer new possibilities in space while drastically reducing cost and waste.

YC W25
Proception Inc logo

Proception Inc

Making humanoids dexterous enough to thread a needle

YC W23
Proglix logo

Proglix

B2B Marketplace for Raw Materials in Indonesia

Proglix is a marketplace for small and medium manufacturers to buy metal and steel raw materials in Indonesia. With our platform, customers can easily order domestic and import raw materials with cheaper price, no minimum order quantities, 2x faster in SLA and real time inventory stock.

YC W19
Prometheus logo

Prometheus

We use solar and wind power to make zero net carbon electrofuels

We remove CO2 and water from the air and use electricity from solar and wind power to turn them into zero net carbon electrofuels. These are gasoline, diesel, and jet fuels that work in existing cars, trucks and planes without requiring modification of their engines, and don't contribute to global warming because they don't add any new CO2 to the atmosphere. Each gallon of our electrofuels means a gallon of fossil oil left in the ground forever. Importantly, these fuels for the first time can compete with fossil fuels on price - our zero net carbon jet fuel has a price of one cent per gallon less than fossil jet fuel. American Airlines ordered 10 million gallons of this fuel and we will start shipping it next year.

YC S17
Pyka logo

Pyka

Autonomous electric airplanes

Pyka’s goal is to provide society with a new form of safe, clean, and cost-effective transportation enabled by autonomous electric aviation. To get there, we’re taking a different approach than most. We're applying our technologies to every industry where autonomous electric aircraft can be useful, starting with the highest value and most dangerous jobs. In doing so, we're building game-changing products manufactured at scale, while perfecting the safety, reliability, and capabilities of our autonomy engine and electric propulsion systems. We design, develop and manufacture an ecosystem of technologies including proprietary flight control software, avionics, high power density motors, motor controllers, batteries, and custom carbon-fiber composite airframes. Today, we supply autonomous electric aircraft for cargo transport and crop protection to real-world customers across four separate continents and have secured industry-first regulatory approvals from the FAA. Our cargo aircraft enables remote connectivity, enhances express delivery networks, and ensures fast and reliable shipping of critical supplies to areas in need. Our crop protection aircraft offers agricultural services providers and farmers an autonomous tool to make aerial application safer, more precise, and less harmful to surrounding environments. Both vehicles are highly economical to operate, easy to deploy, and significantly reduce C02 emissions in their respective industries. What you work on at Pyka makes people’s lives better now and brings the future of electric aviation one step closer each day.

YC W21
REGENT logo

REGENT

All-electric seagliders for fast, affordable regional transportation

REGENT is building a new mode of transportation that will redefine regional mobility by 2026. Their first product, the seaglider, is an all-electric, hydrofoiling flying-boat that operates within a wingspan of the water's surface. By flying low on a cushion of air, seagliders unlock the ability to fly twice as far as an electric aircraft, while being regulated by maritime authorities enabling market entry for a fraction of the cost. REGENT has de-risked seaglider technology with a ¼-scale flying demonstration vehicle. By this summer, REGENT will fly humans on the 15,000 lb (7000kg) first full-scale prototype seaglider, which will be the largest electric-flying machine in history. By late 2026, REGENT’s customers - airlines and ferry companies – will begin commercial seaglider service on the 12-seat initial product. A 100 passenger version, already with firm orders, will follow several years later. In just four years, REGENT has accumulated >$10B in pre-orders (including firm deposits) from airlines and ferry companies around the world. Currently a team of 100, REGENT is led by MIT-trained, ex-Boeing engineers Billy Thalheimer and Mike Klinker. REGENT has raised over $100M to date from the likes of Founders Fund, Japan Airlines, Hawaiian Airlines and Lockheed Martin, and is on contract with the US Marine Corps.