Cohorts of 2021

Companies whose accelerator cohort started in 2021. 1,685 companies.

CompanyClusterProgramStatusLast signal
Aer

Compound compliance: the central hub for meeting SEC obligations

Security and complianceSEC compliance management platformY CombinatorS21Acquired2026-08-23
Arengu

Build frictionless signup flows in minutes

Developer toolssignup flow builder for developersY CombinatorS21Acquiredchecked 2026-08-17
Beeper

One chat app to rule them all

Consumerunified messaging platformY CombinatorS21Acquiredchecked 2026-08-23
Breadcrumbs.io

No-code scoring engine identifying your most engaged upsell opps

B2B SaaSno-code revenue scoring for salesY CombinatorS21Acquiredchecked 2026-08-23
Byte Kitchen

Increasing restaurant profitability through our AI Operating System

Commerce and marketplacesghost kitchen operations platformY CombinatorS21Acquiredchecked 2026-08-23
BytebotAI

Bytebot is the open source container for AI desktop agents.

Agent infrastructureAgent automation and orchestration platformY CombinatorS21Acquiredchecked 2026-08-23
Cloudthread

Eliminate Cloud Waste. Attribute and Track Savings. Engage Engineers.

B2B SaaSCloud cost optimization analyticsY CombinatorS21Acquiredchecked 2026-08-17
Deed

Making it easy for employees to donate and volunteer with good causes.

B2B SaaSEmployee giving and volunteering platformY CombinatorS21Acquiredchecked 2026-08-17
Fingo Africa

A neobank for Africa's 500 million youth

FintechPan-African digital banking for youthY CombinatorS21Acquiredchecked 2026-08-17
FirstIgniteAI

AI-Powered Business Development for Scientific Organizations

B2B SaaSAI business intelligence for scientific orgsY CombinatorS21Acquiredchecked 2026-08-23
GamerPay

We are the marketplace for trading gaming skins & assets without scams

Commerce and marketplacesgaming assets marketplaceY CombinatorS21Acquiredchecked 2026-08-23
Goodkind

Student communications platform for higher education

B2B SaaSStudent communications platform for higher edY CombinatorS21Acquired2026-08-23
Hilos

Close and activate your customers on WhatsApp

B2B SaaSWhatsApp CRM and automation platformY CombinatorS21Acquiredchecked 2026-08-23
Hyper

Sell memberships to your Discord server

Commerce and marketplacesDiscord membership marketplaceY CombinatorS21Acquired2026-08-23
inai

Segment for global payments

FintechGlobal payments aggregation platformY CombinatorS21Acquiredchecked 2026-08-23
Inflow

A self-help app for people to manage their ADHD.

Healthcare and bioADHD self-help appY CombinatorS21Acquiredchecked 2026-08-23
Kapacity.io

Reducing energy costs & emissions in buildings.

Climate and energybuilding energy load balancingY CombinatorS21Acquiredchecked 2026-08-23
Keyri

Secure fraud prevention and authentication platform for developers

Security and complianceDevice fingerprinting and fraud preventionY CombinatorS21Acquiredchecked 2026-08-17
LaudableAI

App for B2B companies to find customer stories and advocates

B2B SaaScustomer story and case study generationY CombinatorS21Acquiredchecked 2026-08-23
Level

Fast and simple fintech financing

Fintechloan purchasing platform for lending startupsY CombinatorS21Acquiredchecked 2026-08-17
Mable

First personalized migraine clinic using genetics and telehealth.

Healthcare and bioPersonalized migraine care via genomicsY CombinatorS21Acquired2026-08-23
MadEats

Online delivery-only restaurant group in the Philippines

Consumerghost kitchen delivery brandsY CombinatorS21Acquired-
Mailmodo

No-code email marketing platform to send forms & widgets within emails

B2B SaaSinteractive email marketing platformY CombinatorS21Acquiredchecked 2026-08-23
Maroo

CRM for creatives (acquired by Helium Ventures)

B2B SaaSCRM for creative professionalsY CombinatorS21Acquiredchecked 2026-08-23
MentumAI

AI-Powered Assistant for Procurement and Strategic Sourcing

B2B SaaSAI-powered procurement intelligenceY CombinatorS21Acquiredchecked 2026-08-24
Nasdisc

A marketplace for vinyl, cassettes and cds

Commerce and marketplacesphysical media marketplaceY CombinatorS21Acquiredchecked 2026-08-17
Onfolk

Gusto for the UK

B2B SaaSPayroll and HR software for UK SMBsY CombinatorS21Acquiredchecked 2026-08-17
Pactima

Live video signing for real-time agreements

Security and complianceeSignature and document verificationY CombinatorS21Acquiredchecked 2026-08-23
Positional

A modern platform for content marketing & SEO.

B2B SaaSSEO and content marketing platformY CombinatorS21Acquired2026-08-23
Satsuma

Reliable blockchain indexing & querying for web3 engineering teams.

Developer toolsblockchain data indexing APIY CombinatorS21Acquiredchecked 2026-08-17
SleekAI

Browser automation for businesses.

Vertical AI agentsAI agents for ecommerce automationY CombinatorS21Acquiredchecked 2026-08-23
Sproutfi

Latin Americas' first investing social network. Learn. Share. Invest.

FintechSocial investing platform for Latin AmericaY CombinatorS21Acquired-
Tablevibe

Direct Ordering Software for Restaurants

Commerce and marketplacesDirect ordering for restaurantsY CombinatorS21Acquiredchecked 2026-08-23
Tarsal

Data pipeline for your security data lake.

Security and complianceSecurity data pipeline infrastructureY CombinatorS21Acquired2026-08-23
TelivyAI

Automate your cyber security risk assessments

Security and complianceAI cyber risk assessment platformY CombinatorS21Acquired2026-08-23
Verano Health

Nonprofit telehealth coaches for underserved Americans on Medicaid

Healthcare and bioMedicaid telehealth coaching for chronic diseaseY CombinatorS21Acquiredchecked 2026-08-17
VogentAI

Build Voice AI Agents

Agent infrastructureVoice agent orchestration platformY CombinatorS21Acquiredchecked 2026-08-23
Warrant

Authorization and access control as a service.

Developer toolsauthorization infrastructure platformY CombinatorS21Acquiredchecked 2026-08-23
Avenue

Observability platform for operations teams

B2B SaaSDatabase alerting for operations teamsY CombinatorW21Acquiredchecked 2026-08-23
Awari

Reinventing lifelong learning for the future of work.

OtherCareer education platform for tech professionalsY CombinatorW21Acquiredchecked 2026-08-17
Bueno Finance

Building Chime for India

FintechDigital credit cards for emerging marketsY CombinatorW21Acquiredchecked 2026-08-17
ClipDropAI

Turn regular mobile photos into professional product visuals

ConsumerAI photo editing for sellersY CombinatorW21Acquiredchecked 2026-08-23
Dyte

Real-time audio & video SDKs, ready to launch 🚀

Developer toolsvideo streaming SDKsY CombinatorW21Acquiredchecked 2026-08-23
Emerge Tools

Supercharge your mobile apps

Developer toolsMobile app performance and monitoringY CombinatorW21Acquiredchecked 2026-08-23
Enable Us

Digital Sales Rooms (Acquired by MindTickle)

B2B SaaSAI-powered digital sales roomsY CombinatorW21Acquiredchecked 2026-08-23
eqtble

Turning HR data into actionable insights

B2B SaaSHR people analytics platformY CombinatorW21Acquiredchecked 2026-08-17
Finley

Streamline your debt capital raise and management

Fintechdebt capital management softwareY CombinatorW21Acquiredchecked 2026-08-23
Flok

End to end company retreat planning

B2B SaaSCompany retreat planning platformY CombinatorW21Acquired2026-08-23
Fountain9AI

Helping food brands and retailers reduce food wastage

Commerce and marketplacesAI-driven inventory optimization for food retailY CombinatorW21Acquiredchecked 2026-08-17
FrizAI

AI Social Media Manager

Horizontal AI assistantsAI social media content managementY CombinatorW21Acquiredchecked 2026-08-17
FunctionUp (FanPlay)

A skill-tech platform that runs placement bootcamps

Developer toolsTechnical talent training and placementY CombinatorW21Acquiredchecked 2026-08-23
Furmacy

Digital e-prescribing software for veterinarians.

B2B SaaSE-prescribing software for veterinariansY CombinatorW21Acquiredchecked 2026-08-17
HyperGlueAI

Business intelligence on text

Data for AIText analytics and insightsY CombinatorW21Acquiredchecked 2026-08-24
inBalanceAI

Electricity price forecasts for energy storage, ev charging, etc.

Climate and energyelectricity price forecasting for energy optimizationY CombinatorW21Acquiredchecked 2026-08-17
Journey

No code platform for sales to tell better stories and win more deals.

B2B SaaSInteractive storytelling for salesY CombinatorW21Acquiredchecked 2026-08-23
Kitemaker

A faster and more collaborative alternative to Jira for remote teams

B2B SaaScollaborative project management for dev teamsY CombinatorW21Acquiredchecked 2026-08-23
Laudspeaker

Open source mobile marketing platform. Alternative to appcues /…

B2B SaaSMobile marketing automation platformY CombinatorW21Acquiredchecked 2026-08-17
Mono

Plaid for Africa, but better.

FintechBank data API for AfricaY CombinatorW21Acquiredchecked 2026-08-23
OctiFi

Buy Now Pay Later for Southeast Asia

FintechBuy now pay later for Southeast AsiaY CombinatorW21Acquiredchecked 2026-08-24
Orbillion BioAI

Tasty and scalable cultivated meat at price parity

Robotics and physical worldcultivated meat bioprocessY CombinatorW21Acquiredchecked 2026-08-17
Partnered

The network where sales teams connect to share customer introductions.

B2B SaaSSales network for introductionsY CombinatorW21Acquired2026-08-23
PingPong

Video messaging app for remote teams.

Horizontal AI assistantsasync video collaboration platformY CombinatorW21Acquiredchecked 2026-08-17
PipeBio

PipeBio is a SaaS bioinformatics platform to develop antibody drugs.

Healthcare and bioBioinformatics for antibody drug developmentY CombinatorW21Acquired2026-08-23
Preki

Shopify for LatAm

Commerce and marketplacesE-commerce platform for LatAm SMBsY CombinatorW21Acquiredchecked 2026-08-17
Procoto

Self-service RFP management

Commerce and marketplacesprocurement and vendor managementY CombinatorW21Acquiredchecked 2026-08-23
Promoted.aiAI

Dramatically better search and ads for marketplaces

Commerce and marketplacesAI-powered marketplace search and rankingY CombinatorW21Acquiredchecked 2026-08-17
Pry Financials

Finance for Founders (now at prune.com)

B2B SaaSFinancial planning for startupsY CombinatorW21Acquired2026-08-23
Pyroscope

Open source continuous profiling software to debug performance issues

Developer toolsContinuous profiling and debuggingY CombinatorW21Acquired2026-08-23
R2

Embedded lending infrastructure

Fintechembedded lending for SMBsY CombinatorW21Acquiredchecked 2026-08-23
Roin Technologies

Building robots to automate commercial concrete construction.

Robotics and physical worldConcrete construction automation robotsY CombinatorW21Acquiredchecked 2026-08-17
Segments.ai

Build better computer vision models by building better datasets

Data for AIMulti-sensor data labeling platformY CombinatorW21Acquiredchecked 2026-08-23
StacksiAI

Automated Answers to Security Questionnaires

Security and complianceSecurity questionnaire automationY CombinatorW21Acquiredchecked 2026-08-17
Striga

Compliant Crypto and Banking Infrastructure

FintechCrypto banking and compliance infrastructureY CombinatorW21Acquiredchecked 2026-08-23
TaoFi

The financial layer for decentralized AI

FintechDeFi infrastructure for AIY CombinatorW21Acquiredchecked 2026-08-17
TechBiz

MIS on mobile for SMB's in India

B2B SaaSMobile MIS for Indian SMBsY CombinatorW21Acquiredchecked 2026-08-17
Trendpop

Discover trends as they happen

B2B SaaSsocial video analytics platformY CombinatorW21Acquiredchecked 2026-08-17
Uiflow

No-code platform for enterprise software companies

Developer toolsNo-code application development platformY CombinatorW21Acquiredchecked 2026-08-23
unSurveyAI

AI-led market research interviews, no scheduling, instant insights.

Vertical AI agentsAI market research automationY CombinatorW21Acquiredchecked 2026-08-17
Verak

Better Business Insurance for MSMEs in India

FintechInsurance for MSMEsY CombinatorW21Acquiredchecked 2026-08-17
Worksphere

Manage your hybrid workplace

B2B SaaSHybrid workplace managementY CombinatorW21Acquiredchecked 2026-08-17