Cohorts of 2021
Companies whose accelerator cohort started in 2021. 1,685 companies.
| Company | Cluster | Program | Status | Last signal |
|---|---|---|---|---|
| Aer Compound compliance: the central hub for meeting SEC obligations | Security and complianceSEC compliance management platform | Y CombinatorS21 | Acquired | 2026-08-23 |
| Arengu Build frictionless signup flows in minutes | Developer toolssignup flow builder for developers | Y CombinatorS21 | Acquired | checked 2026-08-17 |
| Beeper One chat app to rule them all | Consumerunified messaging platform | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Breadcrumbs.io No-code scoring engine identifying your most engaged upsell opps | B2B SaaSno-code revenue scoring for sales | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Byte Kitchen Increasing restaurant profitability through our AI Operating System | Commerce and marketplacesghost kitchen operations platform | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| BytebotAI Bytebot is the open source container for AI desktop agents. | Agent infrastructureAgent automation and orchestration platform | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Cloudthread Eliminate Cloud Waste. Attribute and Track Savings. Engage Engineers. | B2B SaaSCloud cost optimization analytics | Y CombinatorS21 | Acquired | checked 2026-08-17 |
| Deed Making it easy for employees to donate and volunteer with good causes. | B2B SaaSEmployee giving and volunteering platform | Y CombinatorS21 | Acquired | checked 2026-08-17 |
| Fingo Africa A neobank for Africa's 500 million youth | FintechPan-African digital banking for youth | Y CombinatorS21 | Acquired | checked 2026-08-17 |
| FirstIgniteAI AI-Powered Business Development for Scientific Organizations | B2B SaaSAI business intelligence for scientific orgs | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| GamerPay We are the marketplace for trading gaming skins & assets without scams | Commerce and marketplacesgaming assets marketplace | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Goodkind Student communications platform for higher education | B2B SaaSStudent communications platform for higher ed | Y CombinatorS21 | Acquired | 2026-08-23 |
| Hilos Close and activate your customers on WhatsApp | B2B SaaSWhatsApp CRM and automation platform | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Hyper Sell memberships to your Discord server | Commerce and marketplacesDiscord membership marketplace | Y CombinatorS21 | Acquired | 2026-08-23 |
| inai Segment for global payments | FintechGlobal payments aggregation platform | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Inflow A self-help app for people to manage their ADHD. | Healthcare and bioADHD self-help app | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Kapacity.io Reducing energy costs & emissions in buildings. | Climate and energybuilding energy load balancing | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Keyri Secure fraud prevention and authentication platform for developers | Security and complianceDevice fingerprinting and fraud prevention | Y CombinatorS21 | Acquired | checked 2026-08-17 |
| LaudableAI App for B2B companies to find customer stories and advocates | B2B SaaScustomer story and case study generation | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Level Fast and simple fintech financing | Fintechloan purchasing platform for lending startups | Y CombinatorS21 | Acquired | checked 2026-08-17 |
| Mable First personalized migraine clinic using genetics and telehealth. | Healthcare and bioPersonalized migraine care via genomics | Y CombinatorS21 | Acquired | 2026-08-23 |
| MadEats Online delivery-only restaurant group in the Philippines | Consumerghost kitchen delivery brands | Y CombinatorS21 | Acquired | - |
| Mailmodo No-code email marketing platform to send forms & widgets within emails | B2B SaaSinteractive email marketing platform | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Maroo CRM for creatives (acquired by Helium Ventures) | B2B SaaSCRM for creative professionals | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| MentumAI AI-Powered Assistant for Procurement and Strategic Sourcing | B2B SaaSAI-powered procurement intelligence | Y CombinatorS21 | Acquired | checked 2026-08-24 |
| Nasdisc A marketplace for vinyl, cassettes and cds | Commerce and marketplacesphysical media marketplace | Y CombinatorS21 | Acquired | checked 2026-08-17 |
| Onfolk Gusto for the UK | B2B SaaSPayroll and HR software for UK SMBs | Y CombinatorS21 | Acquired | checked 2026-08-17 |
| Pactima Live video signing for real-time agreements | Security and complianceeSignature and document verification | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Positional A modern platform for content marketing & SEO. | B2B SaaSSEO and content marketing platform | Y CombinatorS21 | Acquired | 2026-08-23 |
| Satsuma Reliable blockchain indexing & querying for web3 engineering teams. | Developer toolsblockchain data indexing API | Y CombinatorS21 | Acquired | checked 2026-08-17 |
| SleekAI Browser automation for businesses. | Vertical AI agentsAI agents for ecommerce automation | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Sproutfi Latin Americas' first investing social network. Learn. Share. Invest. | FintechSocial investing platform for Latin America | Y CombinatorS21 | Acquired | - |
| Tablevibe Direct Ordering Software for Restaurants | Commerce and marketplacesDirect ordering for restaurants | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Tarsal Data pipeline for your security data lake. | Security and complianceSecurity data pipeline infrastructure | Y CombinatorS21 | Acquired | 2026-08-23 |
| TelivyAI Automate your cyber security risk assessments | Security and complianceAI cyber risk assessment platform | Y CombinatorS21 | Acquired | 2026-08-23 |
| Verano Health Nonprofit telehealth coaches for underserved Americans on Medicaid | Healthcare and bioMedicaid telehealth coaching for chronic disease | Y CombinatorS21 | Acquired | checked 2026-08-17 |
| VogentAI Build Voice AI Agents | Agent infrastructureVoice agent orchestration platform | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Warrant Authorization and access control as a service. | Developer toolsauthorization infrastructure platform | Y CombinatorS21 | Acquired | checked 2026-08-23 |
| Avenue Observability platform for operations teams | B2B SaaSDatabase alerting for operations teams | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| Awari Reinventing lifelong learning for the future of work. | OtherCareer education platform for tech professionals | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| Bueno Finance Building Chime for India | FintechDigital credit cards for emerging markets | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| ClipDropAI Turn regular mobile photos into professional product visuals | ConsumerAI photo editing for sellers | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| Dyte Real-time audio & video SDKs, ready to launch 🚀 | Developer toolsvideo streaming SDKs | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| Emerge Tools Supercharge your mobile apps | Developer toolsMobile app performance and monitoring | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| Enable Us Digital Sales Rooms (Acquired by MindTickle) | B2B SaaSAI-powered digital sales rooms | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| eqtble Turning HR data into actionable insights | B2B SaaSHR people analytics platform | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| Finley Streamline your debt capital raise and management | Fintechdebt capital management software | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| Flok End to end company retreat planning | B2B SaaSCompany retreat planning platform | Y CombinatorW21 | Acquired | 2026-08-23 |
| Fountain9AI Helping food brands and retailers reduce food wastage | Commerce and marketplacesAI-driven inventory optimization for food retail | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| FrizAI AI Social Media Manager | Horizontal AI assistantsAI social media content management | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| FunctionUp (FanPlay) A skill-tech platform that runs placement bootcamps | Developer toolsTechnical talent training and placement | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| Furmacy Digital e-prescribing software for veterinarians. | B2B SaaSE-prescribing software for veterinarians | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| HyperGlueAI Business intelligence on text | Data for AIText analytics and insights | Y CombinatorW21 | Acquired | checked 2026-08-24 |
| inBalanceAI Electricity price forecasts for energy storage, ev charging, etc. | Climate and energyelectricity price forecasting for energy optimization | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| Journey No code platform for sales to tell better stories and win more deals. | B2B SaaSInteractive storytelling for sales | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| Kitemaker A faster and more collaborative alternative to Jira for remote teams | B2B SaaScollaborative project management for dev teams | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| Laudspeaker Open source mobile marketing platform. Alternative to appcues /… | B2B SaaSMobile marketing automation platform | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| Mono Plaid for Africa, but better. | FintechBank data API for Africa | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| OctiFi Buy Now Pay Later for Southeast Asia | FintechBuy now pay later for Southeast Asia | Y CombinatorW21 | Acquired | checked 2026-08-24 |
| Orbillion BioAI Tasty and scalable cultivated meat at price parity | Robotics and physical worldcultivated meat bioprocess | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| Partnered The network where sales teams connect to share customer introductions. | B2B SaaSSales network for introductions | Y CombinatorW21 | Acquired | 2026-08-23 |
| PingPong Video messaging app for remote teams. | Horizontal AI assistantsasync video collaboration platform | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| PipeBio PipeBio is a SaaS bioinformatics platform to develop antibody drugs. | Healthcare and bioBioinformatics for antibody drug development | Y CombinatorW21 | Acquired | 2026-08-23 |
| Preki Shopify for LatAm | Commerce and marketplacesE-commerce platform for LatAm SMBs | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| Procoto Self-service RFP management | Commerce and marketplacesprocurement and vendor management | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| Promoted.aiAI Dramatically better search and ads for marketplaces | Commerce and marketplacesAI-powered marketplace search and ranking | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| Pry Financials Finance for Founders (now at prune.com) | B2B SaaSFinancial planning for startups | Y CombinatorW21 | Acquired | 2026-08-23 |
| Pyroscope Open source continuous profiling software to debug performance issues | Developer toolsContinuous profiling and debugging | Y CombinatorW21 | Acquired | 2026-08-23 |
| R2 Embedded lending infrastructure | Fintechembedded lending for SMBs | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| Roin Technologies Building robots to automate commercial concrete construction. | Robotics and physical worldConcrete construction automation robots | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| Segments.ai Build better computer vision models by building better datasets | Data for AIMulti-sensor data labeling platform | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| StacksiAI Automated Answers to Security Questionnaires | Security and complianceSecurity questionnaire automation | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| Striga Compliant Crypto and Banking Infrastructure | FintechCrypto banking and compliance infrastructure | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| TaoFi The financial layer for decentralized AI | FintechDeFi infrastructure for AI | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| TechBiz MIS on mobile for SMB's in India | B2B SaaSMobile MIS for Indian SMBs | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| Trendpop Discover trends as they happen | B2B SaaSsocial video analytics platform | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| Uiflow No-code platform for enterprise software companies | Developer toolsNo-code application development platform | Y CombinatorW21 | Acquired | checked 2026-08-23 |
| unSurveyAI AI-led market research interviews, no scheduling, instant insights. | Vertical AI agentsAI market research automation | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| Verak Better Business Insurance for MSMEs in India | FintechInsurance for MSMEs | Y CombinatorW21 | Acquired | checked 2026-08-17 |
| Worksphere Manage your hybrid workplace | B2B SaaSHybrid workplace management | Y CombinatorW21 | Acquired | checked 2026-08-17 |