Nov 20, 2025 10:15:31 PM

Companies


Showing 2301-2325 of 5661 companies
YC S18
J

JITX

Automatic circuit board design.

YC S20
Jam.gg (formerly Piepacker) logo

Jam.gg (formerly Piepacker)

Jam.gg, play couch games online with friends

At the crossroads of online gaming and video chatting, jam.gg is a web platform to play awesome multiplayer games with your friends. Jam.gg focuses on hyper accessibility with a patented technology cutting the internet bandwidth requirement by 15 on average. Jam.gg features top retro, pc indie and board games. The project branched out in two companies in 2023 with Jam on one side and Onibi (https://onibi.gg/) becoming its own company. YC being on both cap tables.

YC S22
Jamble logo

Jamble

Fashion resale marketplace powered by live streaming and video

Jamble is the new place to buy & sell secondhand fashion. We empower resellers with video & Live streaming tools to sell more effectively; and buyers with a unique compelling experience. Jamble is designed for the sustainable fashion community to engage, connect and inspire. We’re a mobile-first platform and launched on iOS! 👉 Check us out: https://apple.co/3Pfwran

YC S06
Jamglue logo

Jamglue

Jamglue is an online community allowing users to listen or mix music from a library of user-contributed music.

YC W20
Jamiphy logo

Jamiphy

TikTok for Musicians

Jamiphy is the destination for live music. All you have to do is watch, engage with what you like, skip what you don't, and you'll find an endless stream of live music that feels personalized just for you. We make it easy for you to discover and create your own live music videos by providing easy-to-use tools to view and capture your greatest musical moments. Take your videos to the next level with Jamiphy!

YC W22
Jamsocket logo

Jamsocket

Run compute-intensive apps in a browser

We are a platform for high-performance browser-based applications. We make it easier for developers to deploy apps that give every user a dedicated backend. This is a system design that apps like Figma and GitHub codespaces use, but it's currently difficult for others to replicate it. We make it as easy as deploying a traditional web server.

YC S25
Janet AI logo

Janet AI

The AI-Native Jira

Janet AI is the AI-first ticket management system, built for modern engineering teams. Ticket management today is too reliant on manual work. Context gets scattered. Information doesn’t stay-up-to date. Systems get noisy. We integrate with your information channels (meetings, Slack, Discord, SMS, etc.) to auto-create, update, and organize work items.

YC X25
Janus logo

Janus

Battle-Test AI Agents with Human Simulation

Janus evaluates AI agents in high-fidelity simulations before launch, catching failures in reasoning, compliance, tool usage, and performance. We simulate thousands of realistic AI users to replace manual testing and remove uncertainty in deployment. The resulting datasets benchmark products and feed post-training loops to continuously improve performance over time.

YC F25
Jarmin logo

Jarmin

24/7 Machine Learning Engineer employees

Jarmin.ai is your 24/7 ML eng employee that you hire. Just talk to Jarmin like any other employee and Jarmin handles your AI/ML work from there. Completely hand over full initiatives or individual tasks. Jarmin’s founding team is from Meta Super Intelligence Labs (Staff Engineers), Apple (Machine Learning Engineer), and AWS (scaling infra) with experience building AI/ML and automating complex work of Researchers, Data Scientists, ML Engineers with AI.

YC S22
Jasmine Energy logo

Jasmine Energy

Claim solar incentives with AI

Jasmine makes it easy to register, sell, finance, and retire RECs (renewable energy certificates). Our AI can "read" unstructured data (CRM notes, PDFs, images, etc) and use that information to complete webforms and filing document. This takes previously manual error prone process and makes it automatic and self-healing.

YC W18
Jasper.ai logo

Jasper.ai

Jasper is a leader in creating content using Artificial Intelligence

Launched in February 2021, Jasper is an AI content platform that helps creators and companies of all types expand their creative potential. Over 105,000 active customers are using Jasper to break through writer’s block, repackage their content, create original art, and adjust writing for language and tone. The interest in AI continues to grow and we are at the forefront of teaching the world how to leverage artificial intelligence as a creative partner. We are building teams that will pioneer the content generations space even further.

YC W21
Javelin Robotics logo

Javelin Robotics

Copilot for truckers

We help truckers cut delivery times, increasing productivity and adding much needed capacity to the freight industry. We do this by building autonomy software that tag-teams with human drivers. Conventional trucks drive ~120K miles/ year. Trucks with our tech can hit more than 190K miles/ year.

YC X25
Jazzberry logo

Jazzberry

Training LLMs to be expert bug finders

We're creating an AI agent that orchestrates debugging tools and runs your code to find bugs. It's time to close the loop on vibe coding.

YC S20
Jeevam Health logo

Jeevam Health

Digital holistic care for complex chronic conditions

Jeevam Health (YC S20) is a healthcare app for holistic thyroid treatment.. Even after taking medication, 60% of women are having unresolved symptoms like fatigue, weight issues, and pregnancy challenges. Jeevam software assists doctors to diagnose the root cause of dysfunctions & recommend treatment protocol. The treatment revolves around nutrition, supplements, lifestyle changes, and medicine.

YC S20
Jeeves logo

Jeeves

International banking infrastructure for global startups.

Jeeves is an all-in-one corporate spend and expense management platform for businesses in global markets including North America, Latin America, Europe, and the UK. Cash, corporate cards, and cross-border payments all run on the Jeeves proprietary infrastructure which allows companies to spin up their finance function within minutes. Jeeves can handle multiple currencies for payback. More than 3,000 companies across the world trust Jeeves with their financial payments tack. Jeeves has raised $380 million from Andreessen Horowitz, CRV, GIC, Tencent, Silicon Valley Bank, Stanford University, and Y Combinator to fuel its international expansion. Our product platform covers the following: 1. Jeeves Pay: Do you need to send capital calls between US & LATAM? Need cross-border payments that arrive as soon as the same day? Transfer money internationally to over 150 countries at competitive FX rates with Jeeves Pay. Payments arrive as quickly as the same day between North America, South America, and Europe. Credit line options available depending on region. 2. Jeeves Cards: Equip your team with globally-accepted physical cards for in-person purchases. Ship cards overseas for free or create virtual cards in seconds for secure, online purchases. Prepaid & credit options available depending on region. 3. Expense Management: Collect receipts through the mobile app, review expenses in real time, and streamline global reporting capabilities - all at no additional cost. Benefits of the Jeeves Payments and Spend Management global platform include: -- Free built-in expense management tools -- No personal guarantees or contracts -- Unlimited cards and users for free -- No monthly fees or software fees -- Competitive cross-border payment pricing -- Spend and pay in your preferred currencies -- Business accepted in Brazil, Canada, Colombia, Mexico, the EU, the UK, and the US. Built for global companies. Loved by finance teams, including a large YC contingent. Join us today!

YC X25
Jeevy Fabrication logo

Jeevy Fabrication

AI Driven EPC - Weld Fabrication Contractor

Jeevy Fabrication is an AI-powered contractor that connects complex weld jobs to the best-fit shops—fast. We deliver top-tier QA and total transparency, all at better traditional outsourced pricing. Our software reduces bid and scheduling time for our in-network shops by over 80%. It converts manufacturing drawings into an accurate bill of materials and a resource-loaded, high-fidelity schedule—eliminating costly errors and rework. Using this our in-network fabricators can bid on more jobs and deliver more reliable results than their competitors. We also offer our clients a streamlined purchasing and project tracking experience. Clients submit purchase requests, track schedules, access key documents, and receive real-time photo updates—all in one place. We provide traceability for easy material review and maintenance of domestic content standards as required. Faster decisions, fewer delays, complete visibility.

YC W12
J

Jellyfish Art

Jellyfish Art makes jellyfish aquariums and supplies them with live jellyfish and accessories. Jellyfish are a new trend in personal aquariums. They require specialized tanks with water flow patterns that keep the jellyfish suspended in the middle of the tank away from filtration intakes. They also require specialized food made from frozen plankton. Jellyfish Art sells everything needed to keep jellyfish in a personal aquarium, including the live jellyfish, which can be shipped anywhere in the U.S. via overnight express delivery. The company sells all of its products through its website and ships from a warehouse located in San Francisco, CA. It is the flagship site of AnyVivo.

YC S20
Jemi logo

Jemi

Jemi helps people build beautiful websites and stores.

Our mission is to help creators and entrepreneurs grow online. We do this by helping them build a beautiful website and online store with no coding or design background.

YC W20
Jenfi logo

Jenfi

Jenfi provides revenue-based financing for digital businesses in Asia

We back growing digital businesses using revenue based financing. Many of growing businesses in Asia are highly "bankable" yet 50-70% are unable to obtain capital to grow their business. Having been business owners ourselves, we experienced firsthand the struggles of funding a business - from expensive equity options to loans that required personal guarantees. We went live in Singapore first to validate the product/market fit. We plan to expand across the APAC region.. Our sweet spot is backing repeatable business spend - expenses that leads to increased revenue. Our financing product allows businesses to keep growing with us over time. Over a third of our advances today are from repeat borrowers. We created a brand new asset class in Asia - offering flexible repayment options, such as tieing repayment with sales. Business owners LOVE this. Our automated financial technology platform ingests revenue and alternative data sources that gives us a proprietary edge in understanding the behavior of our borrowers. As we collect continuous data, we are able to offer better financial and technology solutions, while mitigating our downside risk. Funds are seamlessly deployed via our virtual Jenfi Wallet and MasterCard solution, giving borrowers flexibility to make payments while giving Jenfi real-time tracking of their spend. Recent coverage: https://techcrunch.com/2020/02/03/jenfi-wants-to-solve-small-business-lending-in-southeast-asia/

YC S17
Jerry logo

Jerry

Jerry makes it really easy to save time and money on car expenses.

Jerry makes it really easy to save time and money on car expenses. The car ownership super app first launched its AI- and machine-learning-based car insurance compare-and-buy service in 2019. Today, Jerry serves more than 3 million customers as a licensed insurance broker and an authorized auto refinance provider, while also offering free telematics-based driver safety and repair estimator services. The fastest, easiest and only automated way to compare and buy car insurance, Jerry gives you customized quotes from more than 55 insurance carriers in 45 seconds. Customers skip all the long forms and unwanted human interaction while Jerry hunts for better rates and completes the transaction, saving more than $800 per year. In 2022, Jerry launched its auto refinancing marketplace, which can help customers lower their monthly car payments, on average, by $118 dollars. Jerry is scaling its car insurance and auto refinance products and expanding its marketplace into new categories, removing friction from additional car ownership needs. Jerry will be the only app car owners need to manage all their car expenses. Headquartered in Palo Alto, the company has offices in Toronto, and Lockport, NY, and has removed physical location from recruiting restraints to attract talent.

YC S21
Jestor logo

Jestor

Jestor is a no-code platform for creating custom business tools.

Build internal tools for your business with just a few clicks. No developers are required to create custom workflows, Kanban boards, tables, apps, forms, dashboards, and more. Leverage AI to eliminate manual work.

YC W20
Jet Admin logo

Jet Admin

No-code business app builder

Jet Admin - an app builder designed specifically for creating internal tools, admin panels, external portals, inventory apps, and other business applications really fast and without coding. In Jet Admin, you can assemble multi-page apps with complex user flows, connected to multiple data sources. Setting up custom layouts, adding custom actions and workflows, binding and transforming dynamic values, using conditional rules and validations - all is done through a drag & drop and point & click visual builder. We’ve also added a variety of developer tools, so whenever necessary, you can create custom SQL and HTTP queries, write JavaScript, create multiple environments, code, and embed custom UI components.

YC W19
JetPack Aviation logo

JetPack Aviation

Flying motorcycles

Our focus is on developing the smallest, fastest heavy lift optionally piloted VTOL aircraft. Our aircraft can be operated in urban environments with no risk of rotor strikes - we don't use rotor systems! Ship anything from downtown LA to downtown San Diego in 20 mins!

YC W21
Jetdocs logo

Jetdocs

Collaborative ticketing that integrates into Teams and Slack

Jetdocs is a collaborative ticketing solution that is integrated into Microsoft Teams and Slack. We allow teams to create no-code workflows that digitize your processes and connect your teams. We empower IT and Ops teams with the interface, as well as the ability to build out workflows to handle internal tickets, requests and approvals. We eliminate the problems of bloated email chains, group inboxes and long messaging threads.

YC W18
Jido Maps logo

Jido Maps

Turn your data into a deployed computer vision model

We help teams that may or may not have machine learning expertise quickly turn their data into deployed computer vision models. Example applications include security camera monitoring, automating data entry, interpreting web scraped images, validated user photo inputs, augmented reality and mobile product scanning. If you have visual or scanned data that you wish your software could interpret at scale, we can turn around a first proof of concept in under a week. Reach out and see how computer vision can change your business.