Y Combinator B2B SaaS companies
Software sold to businesses. The most crowded category, which makes it the best place to study how successful applications carve a niche inside an obvious market.
1172 companies matched in the directory.
Showing the first 200 of 1172. Search the full directory to filter further.
- RoteYC Winter 2027· San Francisco, CA, USA· 0 people
AI-native insurance department for auto body shops
- AsyncYC Summer 2026· New York City, NY, USA· 2 people
Transforming small businesses with AI agents
- OS3YC Summer 2026· San Francisco, CA, USA· 2 people
Intelligence and Machines for Physical Labor
- Agentic FabriqYC Winter 2026· San Francisco, CA, USA· 2 people
The control plane for AI agents.
- CaptainYC Winter 2026· San Francisco, CA, USA· 2 people
Accurate, high-performance retrieval for AI agents
- CorveraYC Winter 2026· San Francisco, CA, USA· 4 people
The context layer for AI-native CPG brands
- TrustAIYC Summer 2026· San Francisco, CA, USA· 3 people
Continuous compliance and governance for agents on sensitive systems
- Prescience, Inc.YC Summer 2026· San Francisco, CA, USA· 2 people
Healthcare for the age of abundant intelligence.
- 10x ScienceYC Winter 2026· San Francisco, CA, USA· 4 people
The AI-native platform for next-generation protein characterization.
- SalusYC Winter 2026· San Francisco, CA, USA· 2 people
Guardrails to validate your agent's actions before they execute
- Q2QYC Winter 2026· San Francisco, CA, USA· 2 people
We help private equity teams find acquisition targets faster
- UnissonYC Winter 2026· San Francisco, CA, USA· 2 people
AI agents that automate B2B software implementation
- Ressl AIYC Winter 2026· Bengaluru, KA, India· 3 people
Train, eval and build autonomous agents
- SupersetYC Spring 2026· San Francisco, CA, USA· 3 people
Building the platform for software factories
- CorelayerYC Winter 2026· San Francisco, CA, USA· 3 people
AI production engineer for regulated industries
- SupafaxYC Winter 2026· San Francisco, CA, USA· 2 people
AI assistant for your email and calendar
- Poth LabsYC Summer 2026· San Francisco, CA, USA· 2 people
Helping companies understand why users behave the way they do
- Carrot LabsYC Winter 2026· San Francisco, CA, USA· 2 people
AI Cost Management: Track and attribute AI spend across every provider
- HedgeYC Spring 2026· San Francisco, CA, USA· 2 people
AI-Native insurance company
- DreachYC Spring 2026· San Francisco, CA, USA· 2 people
Never miss a lead
- Lab0YC Spring 2026· San Francisco, CA, USA· 3 people
AI FDEs to make your B2B SaaS Go Live in Days, not Months
- Gojiberry AIYC Spring 2026· San Francisco, CA, USA· 7 people
AI Go-To-Market agents for B2B teams
- Keyframe LabsYC Spring 2026· San Francisco, CA, USA· 2 people
Bring AI to life with the world's best interactive avatars
- SidekickYC Summer 2026· San Francisco, CA, USA· 1 people
AI agent that handles frontline operations over text
- InferaYC Spring 2026· San Francisco, CA, USA· 2 people
Control lab instruments with natural language.
- AlchemizeYC Spring 2026· San Francisco, CA, USA· 2 people
Code Review Platform that Simplifies PRs to Ship Faster
- CharacterQuiltYC Spring 2026· San Francisco, CA, USA· 4 people
Computer use agents to deploy enterprise marketing campaigns
- ExpanseYC Spring 2026· San Francisco, CA, USA· 4 people
Unlock wasted GPU capacity.
- RevnuYC Spring 2026· Manchester, England, United Kingdom· 2 people
The growth infrastructure for the autonomous business
- Enjamb LabsYC Spring 2026· San Francisco, CA, USA· 2 people
Where drug teams run their entire program, discovery to FDA approval
- Amorphic LabsYC Summer 2026· San Francisco, CA, USA· 2 people
Agentic, Personalized Product Demo Videos for Sales
- RindlerYC Summer 2026· Boston, MA, USA· 2 people
The translation layer between AI agents and the web
- KebraYC Summer 2026· San Francisco, CA, USA· 2 people
Make your field service company AI-native
- HERAYC Summer 2026· Seattle, WA, USA· 2 people
Hera catches thousand dollar errors before they hit the shop floor.
- Perceptron MLYC Summer 2026· San Francisco, CA, USA· 2 people
We make law firms AI-native.
- TropeYC Summer 2026· San Francisco, CA, USA· 2 people
The AI-native ERP system integrator
- KaraYC Summer 2026· San Francisco, CA, USA· 3 people
Making diamond an engineering material
- Nebula SecurityYC Summer 2026· Vancouver, WA, USA· 4 people
Building Mythos for everyone
- ZommaYC Summer 2026· San Francisco, CA, USA· 5 people
Computer Use Agents for back offices in finance
- RexYC Summer 2026· San Francisco, CA, USA· 2 people
AI Operations Partner for Enterprise Order to Cash
- MaingenYC Summer 2026· San Francisco, CA, USA· 2 people
RL environments for industrial operations
- DialogusYC Summer 2026· San Francisco, CA, USA· 3 people
Infra for enterprise voice agents.
- COACHYC Summer 2026· San Francisco, CA, USA· 4 people
The AI Coach for in person sales reps.
- GlenYC Summer 2026· San Francisco, CA, USA· 1 people
Unified organizational context for agents and humans
- Context.devYC Summer 2026· San Francisco, CA, USA· 1 people
We give AI agents realtime web context.
- ZaplarYC Summer 2026· Stockholm, Stockholm County, Sweden· 8 people
Agentic Hotel Operating System
- screenpipeYC Summer 2026· San Francisco, CA, USA· 2 people
AI powered by everything you've seen, said or heard
- CerenovusYC Summer 2026· San Francisco, CA, USA· 5 people
A knowledge company
- WhitespaceYC Summer 2026· London, England, United Kingdom· 2 people
AI Operating System for Wholesale Distributors
- VendoYC Summer 2026· San Francisco, CA, USA· 2 people
Let your users build their own features on top of your product
- TenorYC Summer 2026· San Francisco, CA, USA· 3 people
Turn every employee into a manager of AI workers
- RisklyticsYC Summer 2026· San Francisco, CA, USA· 2 people
Commercial Insurance Brokerage for Frontier Tech
- LATOYC Summer 2026· San Francisco, CA, USA· 2 people
Agent-native research and simulation platform for investors
- NeuromorphicYC Summer 2026· San Francisco, CA, USA· 3 people
Building embodiment agnostic robot brains.
- Luca IQYC Summer 2026· Boston, MA, USA· 5 people
API First Tax Calculator for CPAs
- RadleyYC Summer 2026· San Francisco, CA, USA· 2 people
AI-native, full-stack radiology practice
- DecaworkYC Summer 2026· San Francisco, CA, USA· 2 people
The Agent Control Plane for IT teams
- Lamb LabsYC Summer 2026· London, England, United Kingdom· 0 people
World's fastest AI models
- PalisadeYC Summer 2026· Los Angeles, CA, USA· 1 people
AI that finds and fixes OS-level vulnerabilities across device fleets
- HubbleYC Summer 2026· Seattle, WA, USA· 2 people
The intelligence layer for patient information
- DockYC Summer 2026· San Francisco, CA, USA· 2 people
Multiplayer agent workspace to run your company
- PetrarchYC Summer 2026· San Francisco, CA, USA· 3 people
Unlocking enterprise data for tomorrow's economy
- OneCLIYC Summer 2026· San Francisco, CA, USA· 0 people
The Identity Gateway for AI Agents
- OsseusYC Summer 2026· Remote· 2 people
The intelligent development platform for robotics
- Billow AI LabsYC Summer 2026· San Francisco, CA, USA· 0 people
AI-native Accounting Firm to Replace the Big-4
- EdviroYC Summer 2026· San Francisco, CA, USA· 2 people
Energy world models that fix energy waste before it becomes expensive.
- ConiferYC Summer 2026· San Francisco, CA, USA· 3 people
Local-first least cost routing system to reduce 80%+ token spend
- ForwardYC Fall 2026· San Francisco, CA, USA· 5 people
Unifying Global Private Credit
- VoreliosYC Fall 2026· San Francisco, CA, USA· 2 people
AI that simulates physics 1000x faster
- MSPilotYC Fall 2025· San Francisco, CA, USA· 3 people
Turn AI adoption into a recurring revenue line.
- StormyYC Summer 2025· San Francisco, CA, USA· 5 people
Al platform that makes social marketing as easy as running a Google…
- QuantstructYC Winter 2025· San Francisco, CA, USA· 2 people
AI documentation engineer – test & autoimprove stale product docs
- OutshipYC Winter 2025· San Francisco, CA, USA· 3 people
Hire amazing engineers by seeing how they use AI
- VetnioYC Winter 2025· Stockholm, Stockholm County, Sweden· 6 people
AI Copilot that automates admin work for veterinary professionals
- Leaping AIYC Winter 2025· San Francisco, CA, USA· 13 people
AI voice and texting agents
- Excellence LearningYC Winter 2025· San Francisco, CA, USA· 4 people
AI tutor starting with maths and science
- PraximYC Winter 2025· San Francisco, CA, USA· 2 people
The agentic AI Word editor
- PromptlessYC Winter 2025· San Francisco, CA, USA· 5 people
An AI teammate that automatically updates your customer-facing docs
- TravaYC Winter 2025· San Francisco, CA, USA· 1 people
AI agents for global trade compliance
- Elip AIYC Winter 2025· San Francisco, CA, USA· 4 people
Cooking something sweet and salty!
- Caseflood.aiYC Winter 2025· San Francisco, CA, USA· 2 people
How elite law firms do intake
- WeaveYC Winter 2025· San Francisco, CA, USA· 14 people
AI to understand and then route engineering work
- SalesPatriotYC Winter 2025· San Francisco, CA, USA· 15 people
AI powered operating system for distributors and OEMs
- OkiYC Winter 2025· San Francisco, CA, USA· 2 people
The digital home for your personal memories that grows with you
- Cuckoo LabsYC Winter 2025· Seoul, Seoul, South Korea· 2 people
Real-time AI translator for global sales and marketing
- GaleYC Winter 2025· Vancouver, BC, Canada· 3 people
Fast and Data-Driven Immigration Platform
- AsteroidYC Winter 2025· San Francisco, CA, USA· 8 people
The integration layer for healthcare: EHRs, payer portals & more
- CenoteYC Winter 2025· San Francisco, CA, USA· 2 people
AI agents for conversational commerce
- LopusYC Winter 2025· San Francisco, CA, USA· 2 people
Headless Data Team
- G LNKYC Winter 2025· New York City, NY, USA· 2 people
Simplifying Collaboration for Healthcare Organizations & Professionals
- TrataYC Winter 2025· New York City, NY, USA· 6 people
AI-powered research desk for hedge funds
- BystreetYC Winter 2025· San Francisco, CA, USA· 4 people
Your partner for hotel ownership data.
- RivieraYC Winter 2025· San Francisco, CA, USA· 2 people
AI Employees for Hotels
- NitrodeYC Winter 2025· San Francisco, CA, USA· 6 people
Frontier AI research to advance game development
- CalltreeYC Winter 2025· San Francisco, CA, USA· 14 people
Enterprise-grade AI support reps for call centers
- OutlitYC Winter 2025· San Francisco, CA, USA· 2 people
Customer Context for Agents
- Sennu AIYC Winter 2025· San Francisco, CA, USA· 2 people
We turn traditional companies into AI companies
- InfiniteYC Winter 2025· San Francisco, CA, USA· 4 people
Global B2B Stablecoin Processor
- OpenIntakeYC Winter 2025· New York City, NY, USA· 2 people
The AI Front Door For Law Firms
- Artificial SocietiesYC Winter 2025· London, England, United Kingdom· 12 people
We build networks of AIs to simulate high-value audiences
- AfterQueryYC Winter 2025· San Francisco, CA, USA· 30 people
Applied research lab curating data solutions for foundation model…
- CorsairYC Winter 2025· New York City, NY, USA· 2 people
Connect your users to their apps
- SpottYC Winter 2025· Leuven, Flanders, Belgium· 15 people
AI-native ATS/CRM for recruiting firms
- BluebookYC Winter 2025· Stockholm, Stockholm County, Sweden· 4 people
AI for accounting
- ErgoYC Winter 2025· San Francisco, CA, USA· 0 people
AI agents and unified data layer for revenue teams
- MonteYC Summer 2025· San Francisco, CA, USA· 3 people
Continual Learning for Agents
- FrekilYC Spring 2025· Bengaluru, KA, India· 2 people
RWE Generation in minutes
- BitBoardYC Spring 2025· San Francisco, CA, USA· 2 people
Let your agent build dashboards and reporting.
- stratifyYC Spring 2025· San Francisco, CA, USA· 2 people
AI agents that help you understand your customers' needs
- FreesoloYC Spring 2025· San Francisco, CA, USA· 4 people
Product Native Models
- SixtyfourYC Spring 2025· San Francisco, CA, USA· 12 people
Intelligence Infrastructure on People and Entities
- PhotoniumYC Spring 2025· New York City, NY, USA· 5 people
AI-Powered Optical Consulting & Software
- ClideyYC Spring 2025· San Francisco, CA, USA· 5 people
Turn scattered data into one platform for decision-making
- HABITYC Spring 2025· Los Angeles, CA, USA
Conversational robots for physical businesses.
- MorphikYC Spring 2025· San Francisco, CA, USA· 2 people
AI workers for Skilled Nursing and Senior Living Operations
- throxyYC Spring 2025· London, England, United Kingdom· 55 people
Vertical AI agents running B2B outbound on autopilot, with human SDRs
- AnanaYC Spring 2025· New York City, NY, USA· 2 people
The agentic system of action for hotel groups and management companies
- IRBCYC Spring 2025· New York City, NY, USA· 3 people
AI-native financial institution for global businesses + agents.
- ThetaYC Spring 2025· San Francisco, CA, USA· 7 people
Specialized AI for Every Job
- QualGentYC Spring 2025· San Francisco, CA, USA· 10 people
AI Mobile App Quality Assurance Tester
- AlkaliYC Spring 2025· Houston, TX, USA· 2 people
The smarter way to estimate steel.
- Eloquent AIYC Spring 2025· San Francisco, CA, USA· 5 people
The AI Operator for Financial Services
- ProboYC Spring 2025· Paris, Île-de-France, France· 6 people
We help you get compliant while you focus on your business.
- AdentrisYC Spring 2025· San Francisco, CA, USA· 4 people
Real-time AI Compliance for Medical Documentation
- PelicaYC Spring 2025· San Francisco, CA, USA· 5 people
Transforming healthcare operations with AI agents
- LumariYC Spring 2025· San Francisco, CA, USA· 5 people
AI Digital Workers for Supply Chain
- CactusYC Spring 2025· San Francisco, CA, USA· 2 people
All-In-One AI Growth Partner. Built for Trades.
- StarSlingYC Spring 2025· San Francisco, CA, USA· 3 people
Self-Driving CI
- BlueshoeYC Spring 2025· Boston, MA, USA· 2 people
The AI-Native Consumer + Plaintiff Law Firm
- BondYC Spring 2025· San Francisco, CA, USA· 3 people
Your AI Chief of Staff
- DocketYC Spring 2025· San Francisco, CA, USA· 2 people
AI agents for web testing
- CohesiveYC Spring 2025· New York City, NY, USA· 2 people
The agentic CRM for blue-collar services
- GETASAPYC Summer 2025· San Francisco, CA, USA· 30 people
AI-Native Fresh Produce Logistics
- CloseraYC Summer 2025· New York City, NY, USA· 2 people
AI Shopping Agent for Your Ecommerce Store
- truthsystemsYC Summer 2025· San Francisco, CA, USA· 6 people
Automatically blocking risky behavior with real-time governance agents
- LanesurfYC Summer 2025· San Francisco, CA, USA· 11 people
Book any load in 10 minutes
- argsYC Summer 2025· New York City, NY, USA· 2 people
A better GItHub
- Liva AIYC Summer 2025· San Francisco, CA, USA· 4 people
Audio & Video Data
- LarkYC Summer 2025· San Francisco, CA, USA· 5 people
The E2E testing layer for AI-driven development
- MonarchaYC Summer 2025· San Francisco, CA, USA· 2 people
Turn maps into data
- OnDeck AIYC Summer 2025· Vancouver, BC, Canada· 7 people
Analyze any footage, without training a model
- FrizzleYC Summer 2025· New York City, NY, USA· 2 people
AI Grading for Teachers
- ProliferateYC Summer 2025· San Francisco, CA, USA
Manage a team of agents from your desktop
- StocklineYC Summer 2025· Paris, Île-de-France, France· 2 people
AI-native ERP for food wholesalers
- PanoptiveYC Summer 2025· San Francisco, CA, USA· 2 people
The continuous oversight engine for clinical trials
- TraceYC Summer 2025· London, England, United Kingdom· 3 people
Context-aware orchestration between humans and AI.
- EmbedderYC Summer 2025· San Francisco, CA, USA· 6 people
Hardware-Aware AI for Embedded Software Development
- GhostEyeYC Summer 2025· New York City, NY, USA· 10 people
Your always-on red team.
- VibeFlowYC Summer 2025· San Francisco, CA, USA· 3 people
AI content manager that grows your company's online presence
- Physical TuringYC Summer 2025· San Francisco, CA, USA· 2 people
Evaluating humanoids in the real world
- ManufactYC Summer 2025· San Francisco, CA, USA· 6 people
Cloud infrastructure for MCP servers and Claude / ChatGPT apps.
- MotivesYC Summer 2025· London, England, United Kingdom
Consumer focus groups run by AI
- FintoYC Summer 2025· Munich, BY, Germany· 10 people
AI accounting for enterprise finance teams
- ProcIndexYC Summer 2025· San Francisco, CA, USA· 4 people
AI-powered accounting automation for construction and manufacturing
- AutosanaYC Summer 2025· San Francisco, CA, USA· 5 people
AI agents for E2E testing across mobile & web
- F4 IndustriesYC Summer 2025· San Francisco, CA, USA· 5 people
The GD&T Analysis Platform for Engineering Drawings
- SigmanticAIYC Summer 2025· San Francisco, CA, USA· 2 people
The Cursor for Chip Design - Delivering Silicon-Ready Chip Designs…
- PallyYC Summer 2025· San Francisco, CA, USA· 2 people
Your personal AI Assistant
- Certus AIYC Summer 2025· San Francisco, CA, USA· 8 people
Replacing the restaurant phone line with Voice AI
- ReacherYC Summer 2025· San Francisco, CA, USA· 10 people
We automate creator marketing for the world's largest brands
- CLODOYC Summer 2025· San Francisco, CA, USA· 2 people
Planet-scale people discovery.
- RowFlowYC Summer 2025· New York City, NY, USA· 2 people
Replacing forms with AI conversations
- MunifyYC Summer 2025· Orlando, FL, USA· 4 people
The Cross-Border Neobank for the Middle East
- LapisYC Fall 2025· San Francisco, CA, USA· 5 people
AI that creates and runs ads, end-end
- UplaneYC Fall 2025· San Francisco, CA, USA· 22 people
Replace marketing agencies with AI
- ZavoYC Fall 2025· London, England, United Kingdom· 8 people
AI Operating System for Restaurants
- SylvianYC Fall 2025· San Francisco, CA, USA· 2 people
Specialized AI Agents.
- Bolna AIYC Fall 2025· Bengaluru, KA, India· 21 people
Voice AI to enable India's next billion
- ScoopYC Fall 2025· San Francisco, CA, USA· 2 people
Automating regulatory submissions for life sciences
- The Context CompanyYC Fall 2025· San Francisco, CA, USA· 2 people
Monitor AI agents and understand user behavior
- dari.devYC Fall 2025· San Francisco, CA, USA· 2 people
The Routing Layer for AI Agents
- SorenYC Fall 2025· San Francisco, CA, USA
Specialized AI for Real-World Deployment
- MinroYC Fall 2025· San Francisco, CA, USA· 2 people
Identify churn risk and stay close to users at scale
- TreliumYC Fall 2025· San Francisco, CA, USA· 6 people
The Agent to Build Your Agents
- TerrainYC Fall 2025· San Francisco, CA, USA· 2 people
AI native GTM platform for the physical economy
- Unsiloed AIYC Fall 2025· San Francisco, CA, USA· 2 people
API for parsing multimodal unstructured data
- LogosGuardYC Fall 2025· San Francisco, CA, USA· 2 people
The sensitive data redaction layer for AI
- LogicalYC Fall 2025· San Francisco, CA, USA· 2 people
A proactive desktop copilot. Clippy, but actually good.
- HelonicYC Fall 2025· San Francisco, CA, USA· 2 people
Automatic Construction Drawing Clash Detection
- RedaptoYC Fall 2025· San Francisco, CA, USA· 2 people
Enterprise AI Transformation Platform
- RovrYC Fall 2025· San Francisco, CA, USA· 3 people
AI FDE Engine that runs your engineering workflows
- BraviYC Fall 2025· Paris, Île-de-France, France· 2 people
The AI operating system powering home services businesses
- ComplyDoYC Fall 2025· Berlin, Berlin, Germany· 10 people
Global Compliance for Enterprises
- LexiYC Fall 2025· San Francisco, CA, USA· 15 people
AI Operating System for Legal Teams
- Pixley AIYC Fall 2025· Los Angeles, CA, USA· 2 people
The first platform where families can create AI cartoons in minutes
- LeadbayYC Fall 2025· San Francisco, CA, USA· 8 people
Qualified leads for agentic workflows.
- Patent WatchYC Fall 2025· Bucharest, Romania· 4 people
AI for detecting patent infringements
- Imagine AIYC Fall 2025· San Francisco, CA, USA· 5 people
We reverse engineer B2B growth, starting with LinkedIn.
- EverestYC Fall 2025· San Francisco, CA, USA
- NarrativeYC Fall 2025· New York City, NY, USA· 3 people
Video Intelligence for Sports
- Automax.aiYC Fall 2025· San Francisco, CA, USA· 4 people
AI native real-estate appraisal firm
- LemmaYC Fall 2025· San Francisco, CA, USA· 2 people
Production Monitoring for AI agents
- Boom AIYC Fall 2025· San Francisco, CA, USA· 3 people
AI agents that recover lost revenue through real conversations.
- BlumaYC Fall 2025· San Francisco, CA, USA· 2 people
Canva for short-form video ads
- Specific LabsYC Fall 2025· San Francisco, CA, USA· 2 people
Audio and Enterprise Human Data for AI
- AmikaYC Fall 2025· New York City, NY, USA· 2 people
Infra to build your own software factory
- OpenrollYC Fall 2025· Stockholm, Stockholm County, Sweden· 4 people
The AI workforce for People and Finance teams
- itemYC Fall 2025· San Francisco, CA, USA· 6 people
The AI-Native CRM that works for you
- CoastsYC Fall 2025· Remote· 2 people
Localhost service isolation and orchestration for git worktrees
- LanternYC Winter 2024· San Francisco, CA, USA· 3 people
Postgres vector database extension to build AI applications