Nov 18, 2025 04:57:11 AM

Companies


Showing 4101-4125 of 5661 companies
YC W21
Rulebricks logo

Rulebricks

Add powerful decision-making capabilities to any automated workflow.

Many workflow builders and automation tools have support for adding logic to your processes, but get complicated quick– to the point where process owners are unable to edit them directly and require specialist services. Rulebricks separates decision-making logic from your workflows, giving your team a clear visual, spreadsheet-like interface to manage the changing rules that drive your business, and use those rules as API endpoints, visual forms, and in automation tools like Zapier.

YC S22
Ruleset logo

Ruleset

The SaaS Decision Engine for Lenders

YC S20
Rume logo

Rume

Video chat that doesn't feel like work

Video chat today is built for meetings but you wouldn't have your birthday party around a conference table. Rume re-creates the social dynamic of an in person event where you are easily able to have smaller conversations and fluidly move between groups when you see someone you know.

YC S16
R

RunKit

RunKit is the best tool for prototyping server-side JavaScript. RunKit notebooks remove the friction of trying new ideas. With one click, you'll have a sandboxed JavaScript environment where you can instantly switch node versions, use every npm module without having to wait to install it, and even visualize your results.

YC S24
RunLocal AI logo

RunLocal AI

The On-Device AI Development Platform

RunLocal helps engineering teams ship better on-device AI in their application, faster, with more confidence and less hassle.

YC X25
RunRL logo

RunRL

Reinforcement learning as a service

RunRL improves LLMs and AI agents with reinforcement learning. Do you have a model that needs to get better at a certain task? Are you tired of messing around with prompts? Do you spend a lot of money on observability, and wish that all this data could let your model self-improve? Well, head on over to RunRL.com, and see what we have to offer! If you give us a model, a prompt, and a reward, we’ll make your model’s reward go up.

YC W18
Runa logo

Runa

Automating payroll for Latin America.

Runa is a modern, cloud-based payroll and human resources software built for companies in Latin America. Companies can manage payroll, human resources, time tracking, performance management and reporting all in one platform.

YC W19
Rune logo

Rune

Talk & play multiplayer games with your friends!

Rune is the best place to talk and play multiplayer games with your friends. Users hang out on Rune’s mobile app, sharing laughs on our voice chat as they play amazing indie multiplayer games together! And developers build these games right on the Rune platform. Developers leverage the Rune SDK to build multiplayer games without needing a single line of backend code. They launch their game on Rune and instantly, thousands of passionate friend groups play it together on voice chat right inside the Rune app! Rune's beta has grown rapidly, with over 50 games built for the platform ranging from multiplayer mini-golf to real-time 3D racing games. The SDK supercharges game creation, with many of our games built in under a week! And these games are played like crazy too — friends have spent over 50 million minutes hanging out and playing our new games together already.

YC W21
Runway logo

Runway

Easier and more reliable mobile app releases for teams.

YC S21
Ruta Health logo

Ruta Health

Async personalized and actionable health education by real doctors

Ruta Health is the trusted digital health platform connecting individuals seeking a more efficient and personal approach to health information, who are tired of sifting through unreliable sources, directly with licensed doctors for personalized health information. Unlike scattered internet searches and AI symptom checkers, our async expert-led process ensures accurate, one-on-one answers to all your health questions. We aim to make health information accessible and understandable for everyone to be your trusted "doctor friend".

YC S21
Ruth Health logo

Ruth Health

Telehealth hub for pregnant people 🧡

Ruth Health treats the 83% of post-pregnancy womxn who pee in their pants. We deliver 30-minute Postpartum Recovery + Training Sessions via telehealth, so moms around the globe with pelvic floor prolapse can get back to work, sex, and normal life—5x faster. Using conversational AI + biometric readings, Ruth Health will accumulate the largest, most diverse database in America on longitudinal maternal health

YC S19
Rutter logo

Rutter

The Unified API for Business Financial Data

Rutter is the unified API infrastructure powering the next generation of B2B fintech. We help tech-forward companies build seamlessly integrated financial products by connecting to their customers' systems of record, from accounting platforms to e-commerce systems. The financial operations landscape is fragmented across hundreds of platforms (QuickBooks, NetSuite, Shopify, Stripe, etc.). Without Rutter, companies must spend thousands of engineering hours building and maintaining these critical integrations. Our Universal API provides the same level of granularity as direct integrations while using a single, consistent schema. This enables our customers to build end-to-end workflows for financial planning, lending, expense management, AP/AR automation, and more, in days, not months. Leading fintechs like Mercury, Airwallex, and Orb trust Rutter to power their integrated financial solutions. Learn more: https://www.rutter.com/

YC W24
Ryse logo

Ryse

The secondary market for real estate leases

Ryse is the only marketplace where investors who want to buy leases can trade with real estate operators who want to sell leases.

YC F24
Ryvn logo

Ryvn

Easy and secure customer cloud deployments

Ryvn provides the devtools and infrastructure to easily deploy any workload, on any cloud, and on-prem. Run apps in your own cloud and offer Bring Your Own Cloud (BYOC) to your customers in minutes, with built-in observability designed for sensitive industries.

YC W22
SALT logo

SALT

B2B Cross-Border Payment & Compliance Platform

Salt is a neo banking solution stitched together to ease payments and documentation which comes with business banking by moving it to a digital-first and automated end to end platform.

YC W25
SAMMY Labs logo

SAMMY Labs

Live, AI-powered graph of every possible click path in your software

SAMMY is an Al that explores your app like a real user, mapping every possible click to generate content, onboard users and spot issues. It updates automatically with every product change, keeping everything running smoothly. It may feel like magic, but it’s just powerful technology at work.

YC W21
SBX Robotics logo

SBX Robotics

Synthetic data for better vision.

SBX Robotics generates synthetic data that teaches robots to see. We use simulation software to create training data 10x faster and cheaper than annotation services or in-house teams. Instead of being blocked on data, our clients send 25 images from their robot’s camera, and receive 25,000 perfectly labeled synthetic training images. SBX data is ready to be used by deep learning computer vision models.

YC W20
SEND logo

SEND

Flexport for Africa - Digital Freight forwarder and Customs Broker.

SEND is a digital freight forwarder and customs broker for Africa. We manage the entire process of shipping cargo by air or by sea, including the documentation, customs process, delivery to the warehouse and trade financing.

YC F25
SF Tensor logo

SF Tensor

Infrastructure for AI labs to focus on research.

AI researchers should be pushing the boundaries of what's possible with new architectures and training methods. Instead, they waste weeks configuring cloud infrastructure, debugging distributed systems, and optimizing their GPU code. We know because we lived it: While training our own models across thousands of GPUs earlier this year, we spent more time fighting our infrastructure than doing actual research. That why we're building two things. First, Elastic Cloud: a managed platform that automatically finds the cheapest GPUs across all providers, handles spot instance preemption, and cuts compute costs by up to 80%. Second, automatic kernel optimization that makes training code run faster by modeling hardware topology, often beating hand-tuned implementations. The problem is that getting high performance across different hardware is genuinely hard. NVIDIA's CUDA moat exists because writing fast kernels requires deep expertise. Most teams either accept vendor lock-in or hire expensive kernel engineers. Our goal is to break the CUDA moat. The compute bottleneck is the biggest constraint on AI progress. NVIDIA can't manufacture enough GPUs, and their monopoly keeps prices astronomical. Meanwhile, AMD, Google, and Amazon are shipping capable alternative hardware that nobody uses because the software is too hard. We're breaking that moat. If we succeed, anyone will be able to train state-of-the-art models without thinking past their PyTorch code.

YC S21
SFA Therapeutics logo

SFA Therapeutics

Regulating the immune system to block cancer & autoimmune diseases

SFA Therapeutics is creating therapeutically-tailored oral drugs that regulate the immune system; with a focus on autoimmune diseases and cancers that originate from chronic inflammation. There are over 300 million patients who suffer from autoimmune diseases. Our treatment is designed to block the root cause of many of these chronic inflammatory diseases, with safe oral drugs. We have strong clinical data from a phase 1b clinical trial in psoriasis, and human data in pancreatic cancer, uveitis and NASH. we have a total of 9 drugs in our pipeline and 15 patents.

YC S14
SFOX logo

SFOX

Crypto-currency trading platform.

SFOX, a YC-backed company, makes it easy for enterprises to trade bitcoin. We started with an advanced trading platform that uses algorithms to provide a competitive advantage to our customers. SFOX now aims to expand international commerce by making it easy to trade any currency and settle in real time.

YC S23
SID logo

SID

Serverless RAG to connect AI to company, industry, or person-specific…

We make it easy for developers to connect data to their LLM apps. Instead of spending months on integrations and retrieval pipelines, Reworkd's AgentGPT added our button in an afternoon and let thousands of people connect their Notion, email and Drive instantly. Every single AI company is building data retrieval. Currently, they're doing this from scratch – we don't think they should have to. Just like OpenAI made working with LLMs as simple as an API call, SID makes it easy for every AI company to access data the same way.

YC W20
SINAI logo

SINAI

Enterprise software to quantify cost-effective decarbonization…

SINAI Technologies is an enterprise software that helps carbon-intensive companies to price carbon emissions, manage carbon taxes, and reduce emissions in the most cost-effective way.

YC W15
SIRUM logo

SIRUM

SIRUM is a “match.com” for unused medicine. We connect institutional…

SIRUM uses technology to connect, prioritize and simplify various sources of medicine. We help safety-net clinics access this medicine for their patients. SIRUM is an innovative nonprofit organization committed to reducing barriers to health for underserved populations. Incubated at Stanford University, SIRUM draws from the academic and technology expertise of faculty and alumni to strengthen its impact and efficiency. SIRUM has become a leader in prescription drug donations, providing consulting and technical assistance to county governments, community clinics and multiple drug donor groups to establish redistribution programs

YC W22
SNAB logo

SNAB

A global finance automation platform for complex multi-entity…

Snab aims to automate & centralize access and management of global banking for complex business groups with multiple subsidiaries, and digitize their access to financial services.