Nov 13, 2025 10:08:21 PM

Companies


Showing 401-425 of 1046 companies
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 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 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 S09
J

Jobspice

JobSpice is a surprisingly easy-to-use, intuitive online tool for creating a resume. Changing styles, managing different resumes for different employers, and creating web-based and PDF versions takes only a few clicks.

YC W22
Joe logo

Joe

We let customers "Buy Now Pay Later" on any store in Europe.

Joe is building a innovative and flexible DtoC Buy Now Pay Later App in Europe powered by Tech📲. In Europe, only 15% of e-commerce have integrated BNPL solutions and consumers don’t have access to installments very easily. Within Joe app and our virtual card you can buy now pay later on any store without any technical integration. And if you already made your purchase, you can be refunded and get 3 installments

YC W22
Joon Health logo

Joon Health

Pediatric digital therapeutic for the +100M families in the US

Joon is an integrated pediatric digital health platform for kids, starting with behavior disorders like ADHD, autism, anxiety, and depression. In Joon, kids access a game-based digital therapeutic where they level up when they do real-life behaviors that are managed by parents and clinicians. Over the next 10 years, we plan on being the first-line vertically integrated digital treatment for pediatric behavior disorders, leveraging the first of its kind technology to drive behavior change.

YC S16
Joy logo

Joy

The platform for all your life events.

Joy is a software platform with a mission to help the world celebrate better together. Our software helps everyone plan and remember all of life's events. Big or small, Joy is there every step of the way.

YC W21
Juicy Marbles logo

Juicy Marbles

Juicy marbles makes thick juicy and marbled plant based steaks.

We are food-tech company. We developed proprietary protein texturing technology that enables us to produce plant-based whole cuts. Our vision is to produce a variety of meat products and match animal derived counterparts by taste, price and convenience. We want to accelerate transition of meat industry into a more sustainable future - by 2030 we want to cut meat consumption in half.

YC S06
J

Jumpchat

A platform bridging mobile text messages, email, and IM communication without needing to download anything. Users can send mass messages on any of the platforms and JumpChat will send it to the platform the receiver activates. They are currently focusing on mass mobile messaging, where users can shoot off mass messages to the groups they define.

YC W20
Junction logo

Junction

API for at-home health data

Junction is an API for at-home health data that makes it easy for health tech companies to collect data from 100's of wearable devices and deliver at-home test kits to their users. Healthtech companies need lab data as well as wearable data, and we give them access to both through a single line of code.

YC S19
Jupiter logo

Jupiter

Using AI to help food creators verticalize food

YC S08
J

JustSpotted

Acquired by Google in 2011

The artist-formerly-known-as Scoopler is a real-time search engine. It aggregates and organizes content being shared on the Internet as it happens, like eye-witness reports of breaking news, photos and videos from big events, and links to the hottest memes of the day. It does this by constantly indexing live updates from services including Twitter, Flickr, Digg, Delicious and more. When users search for a topic on Scoopler, they get the most relevant results, updated in real-time. Scoopler has now become JustSpotted, a celebrity-tracking tool, meant to give fans an idea of what their favorite celebrities are up to at any given moment. JustSpotted, like Scoopler, is a data-aggregator, yet JustSpotted collects from Twitter, Facebook, and Foursquare -- alongside their own data they’ll be collecting from users who actual spot celebrities in the wild. All the information we aggregate is publicly available and you can even do a search on Twitter yourself and find sightings of celebrities. We're just the first people to organize it on a map and in such a way that it's easy to consume and ENJOY.” JustSpotted is about connecting with celebs. All the sightings on our website are naturally occurring events where an everyday person bumps into a celebrity as a chance occurrence. Back in the day, when you saw a celebrity while you were out and about the first thing you would have done was phone or text a friend. In the new age of social media, the first thing you do is share it on Facebook or Twitter. This phenomena is already happening. The service, which launches the week of October 11, 2010, is the latest creation by AJ Asver, Dilan Jarawardane and Benjamin Tauber.

YC W24
K-Scale Labs logo

K-Scale Labs

Open-source humanoid robots

We're building humanoid robots to do most of what you find boring or tedious. We have an open-source design which we are releasing to the public, which is capable of walking, talking and manipulating objects.

YC W22
Kaagaz logo

Kaagaz

'Office' Suite for Mobile-first Businesses in India

Kaagaz is an 'Office' Suite for Mobile-first Businesses in India. With Kaagaz, these users can manage all the document requirements for their business using their smartphone itself, without needing a Desktop. We have an active user base of 3Mn+ users and paid users north of 60,000+ - growing every month. With over 200M such businesses in India, at $15/year subscription price, this a $3B opportunity in India & much larger globally. We are a team of 2nd time entrepreneurs having scaled the pervious startup to $1M in GMV. We are backed by YCombinator, Goodwater Capital, Pravega Venture, Better Capital & other investors including Alan Rutledge (TrendMD) and Farid Ahsan (Sharechat)

YC W20
Kaiten logo

Kaiten

Find culinary products and experiences from great makers everywhere

Kaiten is a discovery app that gives you access to culinary products and experiences from quality makers around the world. We are home to hundreds of makers from around the world including restaurants, chefs, farmers, vineyards and even knife makers and ceramicists. Find new ways to enjoy the culinary world every day. A special bottle of wine, soy sauce from a 100 year old brewery in Kyoto, working a day at a Michelin star restaurant - if amazing people make it and sell it, you'll find it on Kaiten.

YC S12
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Kamcord

Our core thesis at Kamcord was that people do very interesting things on their phone screen but don't have a good way to capture and share those moments. We've built 3 products in 5 years: - A mobile gameplay recording SDK that was on 200M devices at its peak - A live streaming community that reached 2M MAU and $2M ARR off virtual goods - A mobile social app focused on editing and sharing screenshots and screen recordings

YC W25
Karoo logo

Karoo

Canadian neobank focused on lending

Canadians have not benefitted from fintech innovations in the last 10 years. They are stuck with a banking oligopoly and limited access to tech-first financial offerings (a lot of products still require you going to a branch in person!). We're fixing this.

YC W19
Keeper logo

Keeper

File complex taxes confidently

Keeper is AI-powered tax filing software that mimics the experience of going to an accountant. Just drop off your forms, answer a few questions, and let Keeper do the rest!

YC S19
Khabri logo

Khabri

India's Largest Podcast Platform

YC S23
Khoj logo

Khoj

The open-source AI assistant for your digital brain.

Khoj is an open-source, personal AI application that helps you get answers to your questions, whether they be in your own notes or online. You can use it to get answers that are grounded in reality, references included. Rather than spending an hour researching collating information from different sources, have Khoj do it for you, easily and quickly. Khoj can also generate images and understand your voice via TTS, so you can work hands-free. With our specialized agents, you can get deeper assistance on topics related to Health, Tutoring, Therapy, or something else altogether. Because we're open-source, you can always choose to self-host Khoj on your own machine for more privacy. We've previously built products for Cortana AI at Microsoft and scaled them from 0 to 20M daily active users.

YC S11
K

Kicksend

Send and print photo albums with people you love. Acquired by Lyft

Kicksend is a web, mobile and desktop app that provides an easy solution for printing and sending photographs. Kicksend platform is complete with social tools, multiple payment options, one click purchasing and a robust virtual currency system. The company has partnerships with Walmart, Walgreens, Target, CVS and Duane Reade that provide local retail locations for users to pick up their printed photos.