Nov 16, 2025 01:44:52 AM

Companies


Showing 4576-4600 of 5661 companies
YC W16
Stilt logo

Stilt

Financial products for immigrants (acquired by JG Wentworth)

Stilt/Onbo enables you to launch credit products without a bank sponsor. We have built APIs to abstract complexity around licenses, regulatory compliance, underwriting, loan management system, credit reporting, and debt capital. We are backed by fintech investors including Y Combinator, Link Ventures, Hillsven Capital, Petrushka investments (early backer of Lending Club, Zillow, Check, Pets.com), and CEOs of billion-dollar fintech companies.

YC S21
Stipop logo

Stipop

Monetization platform for character creators

Stipop is a monetization platform for character creators, or simply put, Patreon for character creators. We help independent character IP owners generate revenue directly from their audience with fun, dynamic features. Previously, Stipop was a sticker platform with 5,000 sticker creators, and 250K stickers and provided stickers to Canva, Teams, Google, and Adobe. We also provide sticker API and SDK to help chat apps improve revenue and user engagement. Stipop has been invested by Snap (through Yellow Accelerator), YC, Translink Investment, Strong Ventures, Next Ventures, and more.

YC S15
Stitch Health logo

Stitch Health

Care Coordination Platform for Healthcare

Care coordination and collaboration tools for healthcare teams

YC W24
Stitch Technologies logo

Stitch Technologies

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YC W22
Stock Unlock logo

Stock Unlock

Web-app | investment education and analysis tools for retail investors

Stock Unlock is an investment education and analysis platform, built by retail investors, for retail investors. We make it easy for noobies to start their investment journey, and save time for the pros. We are building THE place for investors to learn, grow, and invest confidently.

YC S25
Stockline logo

Stockline

AI-native ERP for food wholesalers

Stockline is an AI-native ERP for food wholesalers. Our agents eliminate human labor for repetitive tasks, starting with order entry. Our goal is to replace clunky software with the next generation of ERPs, built with AI employees at their core. Team is 2 Polytechnique alums who dropped out of Stanford and MIT. Mariem is daughter of the fish industry and Moncef started coding and building softwares at 13.

YC W21
Stoke Space logo

Stoke Space

We’re on a mission, and it starts with 100% reusable rockets.

Stoke Space delivers goods to and from orbit using 100% reusable rockets designed to fly daily.

YC S24
Storia AI logo

Storia AI

Open source AI copilot that knows your company's code and its context

With AI increasingly automating away code generation, software engineers will spend more time reading, judging, and architecting code rather than writing it. Storia is building an open-source copilot that knows a company's codebase and its context. We are starting with Sage, a Perplexity-like agent for helping developers understand, judge, and generate software. Given an existing codebase, developers can ask Sage questions such as: 1) Given my project’s SLA and latency constraints, what is the appropriate underlying vector database to use? How would I incorporate it into my existing codebase? 2) Why should I pick Redis over Milvus as my underlying vector store? 3) Does this codebase in our organization still work and what steps are required for a complex integration with another library? Sage’s answers are directly supported by documentation and external references like GitHub, Stack Overflow, technical design documents, and project management software, preventing hallucinations. Today, Sage has up-to-date knowledge about open-source repositories (indexed daily). Tomorrow it will have a deep understanding of every line of code on the Internet. For teams, Sage will know about your private codebase too. No group has yet solved how to build an AI system that comprehends a codebase and its context and can empower every developer to architect better code, faster. This requires new research advances because vanilla RAG and out-of-the-box LLMs aren’t going to cut it. We have 20+ years of software engineering and AI research experience. Julia worked on precursors of Gemini using contextual neural techniques before they were called “RAG” (and applied it to products like Google Keyboard and Pixel phones). Mihail built the earliest LLMs at Amazon Alexa and launched the first contextual deep learning conversational AI system in production at Alexa.

YC S25
Stormy AI logo

Stormy AI

Al platform that makes social marketing as easy as running a Google…

Stormy: AI-Driven Influencer Marketing Streamline influencer outreach and let your product shine. • Discover: AI pinpoints ideal influencers with 99.8% accuracy. • Outreach: Auto-send personalized emails and follow-ups. • Close: AI negotiates and finalizes deals seamlessly. Focus on building—Stormy handles distribution on autopilot. Founders from YC have discount! Please DM me on twitter: @karmedge or email

a16z SR003
Story Engine Inc. logo

Story Engine Inc.

AI Native Anime & Webtoons for Gen Z.

We are reinventing webcomics and anime with AI. Anime & webcomics is a $70B market where per 1 second of animation takes 8 hand drawn panels & many hours. By turning every webcomic episode into a bite sized, animated, immersive anime video with AI, we are building a new medium of storytelling.

YC S17
Storyboard logo

Storyboard

Social media management tool for Instagram and Snapchat

Introducing Storyboard, the leading platform designed to connect the world's top brands, innovative creative agencies, and dynamic influencers with their communities on Instagram and Snapchat. Our mission is to simplify and enhance your online presence on Instagram and Snapchat, offering a comprehensive suite of powerful and intuitive features: 1. Seamless Automation: Storyboard enables smooth, automatic sharing of your stories between Instagram and Snapchat. No more manual cross-platform management, saving you time while maintaining content consistency. 2. Advanced Performance Tracking: Measure the impact of your efforts with our advanced performance analytics toolkit. Gain in-depth insights into engagement, reach, and other essential metrics, empowering you to adjust your strategy in real time for optimal results. 3. Strategic Planning: Anticipate your campaigns by scheduling your stories and posts in advance. Our user-friendly interface lets you create a consistent editorial calendar, ensuring your content reaches your audience at the right times. Discover how Storyboard can transform your presence on Instagram and Snapchat. Join visionary brands already placing their trust in Storyboard to optimize their social media presence. Whether you're a large corporation or an independent creative, our scalable platform will continue to deliver exciting new features to propel your online impact.

YC W23
Storyboarder logo

Storyboarder

Tool and platform to create and sell webcomics

Storyboarder is a tool and a platform for anyone to create, share, and sell webcomics. In East Asia, the webcomic (or digital manga) industry is an $12B market and rapidly growing to the rest of the world. Webtoon, the largest company in the space, generates $100M / month in revenue. However, their addressable market is limited by their content creators, who need know how to draw. Readers are desperate for a greater variety of stories in webcomics. Through years of working with filmmakers, we’ve built extremely easy to use storyboarding software that has 700K users. We’re democratizing visual storytelling to everyone. We’re working on the next generation that, through advances in video game interfaces, ubiquitous 3D compute, and AI, will allow anyone to easily create scenes, pose characters, to create webcomics. Storyboarder is backed by Y Combinator (W23), David Karp (Tumblr Founder), Andrew Kortina (Venmo Founder), and other product focused investors.

YC S21
Storylane logo

Storylane

Build Interactive Product Demo in 10 mins for SaaS companies

Storylane enables marketing and sales teams to create and share interactive product demos in 10 min. Prospective buyers can self-experience the demos without talking to sales. Our no-code platform allows teams (without any engineering help) to capture, personalize, add guides and publish a demo. These Demos can be embedded on websites, email campaigns or sales followups.

YC W18
Storyline logo

Storyline

Create Alexa Skills without coding

No-code Alexa Skills builder.

YC W11
Storyworth logo

Storyworth

Record your family stories and print them in beautiful keepsake books.

Storyworth is a service that makes it easy for families to record their stories. Each week they email their customers a question about their life, for example "What do you remember of your grandmother?". Their customers reply by email, and the stories are saved and shared privately with their family. At the end of a year, their stories are bound in a beautiful keepsake book.

YC S21
Stownest logo

Stownest

Flexible On-Demand Storage Space for Household, SMEs & Travellers.

Valet self-storage solution for your personal storage needs. Be it household storage or seasonal belongings, we will pick them up and store them in our facility. You get it back when you need it. Service built on technology and strong customer experience fundamentals.

YC W22
Strac logo

Strac

Data Discovery, DLP, DSPM for SaaS, Cloud, Gen AI & Endpoints

Strac is an agentless Data Discovery (aka DSPM - Data Security Posture Management), Data Classification & DLP (Data Leak Prevention) that automatically discovers, classifies and remediates sensitive data (alert, label, redact, mask, block, delete). Strac protects SaaS, Cloud, Gen AI, Browsers, On-Prem and Endpoints like O365, Slack, GDrive, AWS, Salesforce, ChatGPT, Jira, Mac, Zendesk, Azure, On-Prem (On-Prem, MS SQL SAP) and 40+ integrations. Strac protects enterprise companies like UiPath, Databricks, thredUP, B Capital, Crypto (dot) com!

YC S23
Strada logo

Strada

Phone AI agents for insurance

Strada helps insurance carriers, MGAs, and brokers run with AI agents that handle sales & service calls 24/7.

YC W23
Stralis Aircraft logo

Stralis Aircraft

Emission free hydrogen electric aircraft

Our planes fly 10 times further than battery electric alternatives, with a lower operating cost than fossil fuel powered aircraft. Our first product is a 15 seat aircraft with a range of 800 km that enters service in 2026 with launch customer Skytrans. Our team has over 85 years of aerospace experience and have developed, flight tested and certified aircraft at Google X, magniX, Heart Aerospace, Ampaire, Airbus, Boeing, Bombardier and Gulfstream. We have $145M in aircraft LOIs from 7 airlines in the US, Europe and Australia.

YC W20
StratumAI logo

StratumAI

AI that tells mining companies where to mine to maximize profits

The mining industry drills narrow holes in the ground called drillholes to identify how much gold is in a ground at any spot. These holes are expensive so the industry uses statistical interpolation to predict what's in between these holes. Stratum replaces these traditional methods by utilizing deep learning to better predict both where to best drill and how much gold is in between these holes. This technology is not limited to gold and has been demonstrated to work on other metals, including base metals like copper. Based on Stratum's current pilots, our technology is projected to create ~10M in annual value for the average mine.

YC F25
Stratus Aviation logo

Stratus Aviation

AI-powered intelligence layer for airports

Airports are among the most data-rich yet information-poor environments in transportation. Thousands of radio transmissions, aircraft movements, and sensor signals occur every second, but these systems remain siloed. Most airfields still rely on manual logs and calls to understand what’s happening on the ground, creating blind spots that slow coordination and limit safety oversight. The result is a growing safety and efficiency gap. The FAA records four to five runway incursions every day, and over 90% of air traffic control facilities are operating below target staffing levels. Despite $20 billion in modernization programs like NextGen and Safety Management Systems, airports still lack a unified data backbone that connects communication, movement, and intent across the airfield. Stratus provides the missing layer of intelligence for airport and airside operations — unifying data, communication, and movement into one shared, real-time picture. For airports, this means faster decisions, clearer accountability, and safer, more efficient operations. For aviation as a whole, it’s the foundation for connected, data-driven infrastructure that can finally keep pace with modern airside complexity.

YC W22
Streak logo

Streak

A neo-banking platform for children in India

At Streak, we are building a new age personalized & gamified banking solution for teenagers. We are a fast-paced edu-fintech startup working towards redefining children and teenagers' relationship with money.

YC S11
Streak logo

Streak

Streak transforms Gmail into a powerful CRM

Streak is the only CRM integrated entirely within your Gmail inbox, and works alongside all your other G Suite applications. It can be used to track any business process including sales, partnerships, support, hiring, deal flow, and much more. Streak also includes a powerful set of email tools including email tracking, send later, snoozing, mail merge, and more.

YC S22
Stream logo

Stream

AI-Powered Medical Document Review for Workers' Comp

Stream enables insurance and adjacent professionals such as lawyers, nurses, and claim adjusters to review medical documents faster and better than ever before.

YC S20
Streamdal logo

Streamdal

Data Quality & Playback Platform

SaaS data platform for observing, repairing and replaying data in streaming systems.