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What happened to YC Winter 2021

Every company in Y Combinator's Winter 2021 batch with its status as YC lists it: 228 Active, 42 Acquired, 0 Public, 65 Inactive.

Companies335
Active68%
Acquired or public13%
Inactive19%

Y Combinator's directory lists 335 companies in the Winter 2021 batch: 228 Active, 42 Acquired, 0 Public and 65 Inactive. 19% of Winter 2021 is listed Inactive, against 23% across YC batches at least two years old, so more of this batch is still going than in most.

ActiveAcquiredPublicInactive

Statuses are Y Combinator's own listing in its public company directory, read on the date shown. YC's directory can drop companies altogether, so the Inactive counts here are a floor, not a full count of companies that stopped. Acquired and Public are as YC lists them; neither says anything about the price or the outcome for founders.

Every company in Winter 2021

CompanyWhat they doStatusTeam
AbacumThe AI-native FP&A platform that helps Finance teams drive business…Active125
AgendaProShopify for Beauty and Wellness businesses in LatamActive50
Alba OrbitalWe make satellites to image everywhere on Earth, every 15 minutesActive10
AlbedoFull-stack VLEO satellite missionsActive55
AlineaAutomated investing for the next generation 💸Active12
AlokaiFrontend Platform for eCommerceActive100
AlpasSoftware for procurement departments to find suppliers 10x fasterActive5
AnimaThe next generation care enablement platformActive20
arnataAI workers for the logistics industry.Active15
ArpioRecover from any outage in 10 minutes or less.Active7
Atomic IndustriesSoftware orchestrated mass production of plasticsActive60
AtratoEnabling consumers split the cost of purchases without a credit cardActive80
AurabeatProviding clean, safe, virus free air for homes, buildings and carsActive12
AuricleNeurostimulation implant to restore hearing & speech understandingActive2
AuthologicStripe for online identity verificationActive44
authzedAuthorization Infrastructure securing AI at OpenAI, Zoom, & moreActive31
Aviron InteractiveAviron transforms workouts with game-based exercise machines, making…Active90
AvocadoAI-Native Restaurant POSActive4
Axiom.aiNo-code Browser RPAActive8
Axle HealthScheduling and workforce management SaaS for home healthcare providersActive28
AxoloImproving Developer Experience with Streamlined Code ReviewsActive2
BetterhalfIndia’s first and only marriage super appActive25
BimaplanAffordable insurance for the next billion IndiansActive30
BiodockCloud AI microscopy automationActive8
BloomInvesting app that teaches you how to investActive8
BluelightAnalytics, built for the trades.Active3
BotBuiltWe use robots to build houses.Active8
BrioHRAll-in-one HR management platform for SMEsActive35
BristleAt-home oral health testing, coaching & careActive6
BroadThe multicurrency account and card for BraziliansActive5
BusinessOnBotAutomated user acquisition & selling on WhatsApp for businessesActive25
CamberAdmin automation for healthcareActive101
CamlistThe super app for petsActive5
CampA Nouns DAO governance clientActive3
Care WeatherThe highest-accuracy global weather data from low-cost flat satellitesActive2
CashBookRamp for Indian Businesses - UPI Wallets for Employee ExpensesActive4
ChatwootThe modern, open source, self-hosted AI customer support platformActive12
Chorus SleepMobile app and coaching program that helps employees sleep betterActive4
ClearThe unbiased AI and data layer for skin health.Active2
clicOHAmazon-like logistics for e-commerce companies in LatamActive155
cloud humansAI-powered customer service for startupsActive30
CoderhouseEffective and accessible online live education.Active225
CodingalLeading online after-school for kids & teens to learn AI & codingActive100
Compose.aiCut your writing time by 40% with AI-powered autocompleteActive7
CurvenoteCommunication and publishing tools for scientistsActive3
CybleCyble - World’s First Intelligence-Driven, AI-Native Security…Active197
DarrowBring Justice to LightActive95
Dashlabs.aiSoftware for medical laboratories and clinicsActive30
DatricsGenerative AI Healthcare Coding AutomationActive22
DayraData-driven embedded Financial Services for Gig WorkersActive10
DjamoChallenger Bank for consumers in French speaking Africa.Active250
DreamWorldDreamWorld is a next-gen Minecraft with generative AI buildingActive30
EncordThe data layer for physical AIActive150
EnodeEnergy Orchestration PlatformActive70
Entelexo BiotherapeuticsCreating a New Class of Drugs to Address Incurable Autoimmune DiseasesActive3
EstocaThe Logistics Operating System for E-commerce in LatAmActive150
Expent IncProcure the right software 5x fasterActive10
FathomThe most flexible AI meeting notetaker ever built.Active95
Feroot SecurityAI-powered Compliance Platform for PCI 4, CCPA, HIPAA, CIPA, 50+ lawsActive24
FifthTryContinuous Documentation To End Documentation RotActive4
Finary.comThe new wealth manager for EuropeActive80
FintocAccount-to-Account payments in Mexico and Chile.Active60
Firstbase.ioThe all-in-one startup operating systemActive50
FirstSupport.aiAI Assistant for Customer SupportActive4
FitHubThe one-stop shop for healthy productsActive60
FlextockTech-enabled fulfillment provider in the Middle East & AfricaActive10
FlowEQNo-code workflow toolActive7
FlutterFlowApplication Development Platform (Native Mobile + Web Apps)Active55
FluxCross border Payments infrastructure for internet businesses and…Active8
Flux AutoPhysical AI for Warehouses and FactoriesActive56
FosterA better way to write.Active15
FractionalThe place where motivated investors and entrepreneurs co-own together.Active10
gaiiaall-in-one operating system (OS) for telcosActive100
Gerald Technologies, IncBuy Now Pay Later + Cash Advance for Household EssentialsActive12
GigsThe OS for Embedded TelecomActive150
GimBooksGimBooks makes Bookkeeping Easy for small business ownersActive16
Gradia HealthIntegrated, high touch healthcare — at scaleActive7
GreaseBossGreaseBoss verifes industrial machinery is greased correctlyActive10
Great QuestionUser research on autopilot.Active41
GreywingThe Operating System for MaritimeActive2
GridwareProtecting the grid today, preparing the grid for tomorrowActive125
GroMoApp for independent agents to sell financial products in IndiaActive100
H3X TechnologiesThe lightest electric aircraft motors in the world.Active58
HapiStocks and cryptos trading app with zero commissions and no minimums…Active45
HaystackDelivery Analytics for Software TeamsActive6
Hermes RoboticsAutonomous street sweeping as a service by retro-fitting vehiclesActive5
HomebasePersonalized rent-to-own real estate financing using technology in SEAActive20
hoop.devCode review for DevOps tasksActive3
HoumAll-in-one real estate marketplace for Latin AmericaActive400
Howdy.comWe help US tech companies hire and manage software engineers in LATAMActive140
HUBUCGlobal Card Issuing and Payment Processing EngineActive11
HuduThe Most-Loved IT Documentation PlatformActive26
HumaansAI-Powered HRIS for high performing teamsActive48
HumanceAI that keeps complex construction projects on schedule.Active3
InfracostShift FinOps Left: Proactively Find & Fix Cloud Cost IssuesActive25
InpharmDWe provide a curated, evidence- based answer to any clinical question.Active16
JetdocsCollaborative ticketing that integrates into Teams and SlackActive2
JigaSource better parts by partnering directly with vetted manufacturersActive25
Juicy MarblesJuicy marbles makes thick juicy and marbled plant based steaks.Active45
KandaAffirm for general contractorsActive8
KidatoOnline school for K12 education in AfricaActive15
KilobaserDesktop DNA Printer. The Nespresso Machine for DNA.Active10
KiwifyCreate & sell online coursesActive200
KodoCorporate card & spend management platform for Indian startupsActive45
KrediRocket Mortgage for LatAm.Active66
Lamar HealthTake Care of Shitty Paperwork for Expensive DrugsActive15
LendflowEmbedded lending infrastructure for software companiesActive55
LightTwistRealistic virtual video studio to record and stream from your browserActive2
Lion PoseClinical skincare tested on diverse skin, now available in Sephora.Active3
LiveFlowThe Unified AI-ERP & FP&A PlatformActive51
LogicaVisual, collaborative financial modeling softwareActive2
LogisticsOSWorld's fastest and most optimal route optimization engineActive6
LyggBuilding New Anti-Aging Ingredients for SkincareActive1
Machine26Marketplace for construction machinesActive12
MagicBellThe notification inbox for web/mobile applications.Active4
ManaraConnecting top Middle East talent to global tech jobsActive10
MayanA growth automation platform for Amazon sellersActive14
MeasuredTelemedicine platform for chronic conditions like obesityActive12
MedMe HealthSoftware for pharmacies to move beyond dispensingActive60
MendelWorkflows to empower employees to spend while finance stay in controlActive5
Meru.comThe one-stop-shop for auto-parts in Mexico.Active70
MindeeAI Document Understanding APIActive60
ModernLoopModernLoop helps teams automate and streamline recruiting operationsActive15
MoichorAI Powered Animal DiagnosticsActive29
MoonvalleyBuilding the next generation AI creative studioActive95
Morada UnoWe underwrite and insure house rentals in LatamActive150
My NextDermaDermatology telehealth app for LatAmActive12
Nano TechnologiesPayroll app to pay workers daily for retailers & manufacturers in SEAActive17
NavatticInteractive product demosActive40
NextPayThe digital bank for small businesses in the Philippines.Active25
NirvaThe lifestyle medicine layer for clinicians.Active5
NourishTelehealth dietitians covered by insuranceActive250
Nuntius TherapeuticsCell-specific genetic medicinesActive2
OlaClickRestaurant Solution (E-commerce via WhatsApp + POS + CRM/Marketing)Active30
OllamaGet up and running with large language models.Active—
OntopSimplifying hiring and payments for the global workforceActive186
OpenCodeThe open source AI coding agentActive24
PagaloopPay, Get Paid and Extend Cash Flow using your Credit Card as…Active23
Pangea.appHire Fractional Marketing + Design TalentActive3
ParsagonAI to track and analyze public policyActive2
peopleCQEmployer backed payroll advances for employees in EgyptActive85
Per DiemThe AI operating system for restaurantsActive25
PestoActive8
PhoenixCanada's digital health clinic for menActive70
Pibit.aiThe fastest path from submission to better decisions.Active116
PoliglotaThe online language school for Latam, with groups led by an instructorActive170
PoplYour AI GTM platform for In-Person EventsActive60
PowerRouterPowerRouter helps sales teams with lead routing in SalesforceActive3
Pragmatic Leaders (Ankai Inc)AI-powered Corporate Training: Faster, Smarter, and More EffectiveActive10
PrequelHelping B2B co's sync data to their customersActive9
ProspaBanking for businessesActive70
Quadrant HealthAnalyzing EHR and messaging data to predict disease before it occurs.Active8
QuicknodeTools & infra to build and scale high-quality blockchain applications.Active115
QuotaBookEquity management platform for startups and investors.Active50
Reclaim ProtocolEducation, Employment, Loyalty verification. Global & Compliant.Active17
RecoverGovernment-funded online addiction treatmentActive10
Redcliffe LifetechRedcliffe Labs is India's Largest Omni-channel Diagnostics platformActive3500
REGENTAll-electric seagliders for fast, affordable regional transportationActive40
Rejoy HealthAI workers that book, scribe, code, interpret, and answer cliniciansActive8
RemoraCarbon capture for vehiclesActive45
Reshape BiotechRobots that automate the everyday tasks of microbiologists.Active40
ResquaredMarketing automation platform for selling to local businesses.Active40
RethoricLinkedIn content consultancy and scheduling platform for busy foundersActive4
RinsedSoftware to run car washes moving to a monthly subscription modelActive80
RocketSDRAI Native Sales Outreach PlatformActive30
ROGERThe Best Way to Sign Contracts Since Handshakes. Roger that.Active4
RulebricksAdd powerful decision-making capabilities to any automated workflow.Active2
RunwayEasier and more reliable mobile app releases for teams.Active20
SeerSell beyond the store.Active4
SendboxFulfillment by Amazon for African merchantsActive25
Serna BioGenetic Medicine with Small MoleculesActive5
ShepherdModernizing commercial insuranceActive60
SigNozOpen source alternative to DataDogActive38
SimplifyHelping a billion people build their dream careerActive5
SivoDebt as a service for companies to lend money to their users at scale.Active15
SmartcutsChrome extension to turn clicks & keystrokes into no-code automationsActive3
SoloWe help people resolve debt.Active25
SomosInternet for the urban developing world.Active250
SorabanAI tax workflow platform for accounting firmsActive50
SplineDesign and collaborate in multiple dimensions.Active25
SpoknAI-powered video platform for Internal Comms and HR teamsActive20
SpruceIDSpruceID lets users control their data across the web.Active25
StayflexiOperating System for Hotels and Vacation RentalsActive58
Stoke SpaceSeamless mobility to, through, and from space. It starts with 100%…Active305
SupadockMulti-agent AI for physical logistics operationsActive1
SvixEnterprise ready webhooks service, open-source and in the cloudActive12
Swadesi WayHealthy organic food that creates a positive impactActive9
SwiftSkuManagement and analytics software for convenience storesActive35
TaloflowBetter, faster tech vendor researchActive4
TerapifyOnline therapy platform for the Spanish-speaking marketActive15
Terra APIAPI for developers and AIs to access health dataActive25
Text BlazeSlash commands anywhereActive9
The Third PlaceSubscriptions for neighborhood businessesActive2
TiltBringing the joy of cycling to millions of IndiansActive12
TintMakes it easy for tech platforms to embed insurance into productsActive40
TopkeyActive17
Topline ProGenerative AI powered Shopify for home service professionalsActive28
TractianPhysical AI for asset-heavy industriesActive530
TreintaSoftware and AI tools for SMBs in the US and Latin AmericaActive60
TrelaYour one-stop shop to eat well in BrazilActive120
Trestle BiotherapeuticsBioengineered kidneys for patients with kidney failureActive2
TriomicsAI Agents for Oncology EHRsActive50
True3DBuilding the next generation of visual mediaActive5
TupeloMarketplace for small business M&AActive2
Turing CollegeAI-driven online tech school for busy professionalsActive50
Udhaar AppWe're Khatabook / OkCredit for PakistanActive32
UnschoolLearn, Intern and become Industry-ReadyActive35
UPchieveConnecting low-income HS students with free, 24/7 online tutoringActive15
Valink TherapeuticsDiscovering bispecific antibody drug-conjugates (BsADC) against cancerActive15
VapiVoice AI for developers.Active50
Veera HealthWe treat women with Polycystic Ovary Syndrome in IndiaActive4
VendeaseWhere restaurants in Africa buy food suppliesActive250
Venu AIMeet qualified leads in person by automating conference productionActive5
Version Story CompareGit for Lawyers — now within ClaudeActive30
VooshMaking Restaurants more data-driven!Active15
WaspConfiguration language for building enterprise web apps 10x fasterActive2
WaydevEngineering intelligence for AI transformationActive13
WaypointThe email API built for product teamsActive—
WebinyOpen-source framework for building serverless applicationsActive6
WeekdayAI recruiter that runs outbound sourcing campaigns to find top talentActive38
weweb.ioWeWeb is the AI app builder your IT team will approve.Active12
WyndlyLife's better without allergiesActive10
Z1Digital bank for teenagers in LatAm connected to prepaid cardActive80
ZealthSoftware for remote monitoring of cancer patientsActive2
Zepto10-Minute Grocery Delivery in IndiaActive1300
ZiinaA digital wallet for the Middle East & North AfricaActive57
zingbusPlatform for bus travel across Indian citiesActive40
ZOKOBetter Business on WhatsAppActive18
AvenueObservability platform for operations teamsAcquired8
AwariReinventing lifelong learning for the future of work.Acquired35
Bueno FinanceBuilding Chime for IndiaAcquired18
ClipDropTurn regular mobile photos into professional product visualsAcquired5
DyteReal-time audio & video SDKs, ready to launch 🚀Acquired45
Emerge ToolsSupercharge your mobile appsAcquired9
Enable UsDigital Sales Rooms (Acquired by MindTickle)Acquired14
eqtbleTurning HR data into actionable insightsAcquired5
FinleyStreamline your debt capital raise and managementAcquired32
FlokEnd to end company retreat planningAcquired5
Fountain9Helping food brands and retailers reduce food wastageAcquired8
FrizAI Social Media ManagerAcquired4
FunctionUp (FanPlay)A skill-tech platform that runs placement bootcampsAcquired20
FurmacyDigital e-prescribing software for veterinarians.Acquired5
HyperGlueBusiness intelligence on textAcquired5
inBalanceElectricity price forecasts for energy storage, ev charging, etc.Acquired10
JourneyNo code platform for sales to tell better stories and win more deals.Acquired10
KitemakerA faster and more collaborative alternative to Jira for remote teamsAcquired5
LaudspeakerOpen source mobile marketing platform. Alternative to appcues /…Acquired3
MonoPlaid for Africa, but better.Acquired10
OctiFiBuy Now Pay Later for Southeast AsiaAcquired11
Orbillion BioTasty and scalable cultivated meat at price parityAcquired7
PartneredThe network where sales teams connect to share customer introductions.Acquired2
PingPongVideo messaging app for remote teams.Acquired8
PipeBioPipeBio is a SaaS bioinformatics platform to develop antibody drugs.Acquired10
PrekiShopify for LatAmAcquired15
ProcotoSelf-service RFP managementAcquired4
Promoted.aiDramatically better search and ads for marketplacesAcquired12
Pry FinancialsFinance for Founders (now at prune.com)Acquired7
PyroscopeOpen source continuous profiling software to debug performance issuesAcquired5
R2Embedded lending infrastructureAcquired100
Roin TechnologiesBuilding robots to automate commercial concrete construction.Acquired3
Segments.aiBuild better computer vision models by building better datasetsAcquired8
StacksiAutomated Answers to Security QuestionnairesAcquired4
StrigaCompliant Crypto and Banking InfrastructureAcquired14
TaoFiThe financial layer for decentralized AIAcquired11
TechBizMIS on mobile for SMB's in IndiaAcquired3
TrendpopDiscover trends as they happenAcquired10
UiflowNo-code platform for enterprise software companiesAcquired21
unSurveyAI-led market research interviews, no scheduling, instant insights.Acquired8
VerakBetter Business Insurance for MSMEs in IndiaAcquired45
WorksphereManage your hybrid workplaceAcquired6
AerotimeCalendar that kills time fragmentationInactive6
AlltruistsKid-friendly, at-home volunteer projects in a box, delivered bimonthlyInactive1
Avion SchoolWe teach Filipinos to become remote software engineers globally.Inactive4
AXAR AIMulti-agent orchestration platformInactive40
BeWell DigitalBuilding the operating system for diagnosis.Inactive2
BlinkSame-day delivery for e-commerce companies in Europe.Inactive5
boitas.comLargest B2B eCommerce platform for SMBs in Latin America.Inactive35
Charge RunningProvides live, virtual running classes to runners all around the worldInactive3
CheqoutMobile ordering & payments for Brick & MortarsInactive6
ClayFigma for 3D designInactive5
CodeballAI-Powered Code ReviewInactive3
ControlHubPurchasing Software | Procure-to-Pay SaaSInactive22
CoVerifiedUsing infection data to keep organizations safeInactive9
DataheraldEmbed NL-to-SQL into your Product 📈Inactive18
Degrees of FreedomDoF provides a high quality, affordable higher education alternative.Inactive7
DressdMake infinite $$$ off of clothes in your closet without selling themInactive1
Eat BlueprintLongevity Nutrition ServiceInactive2
FableThe command center for product teamsInactive2
FactionDriverless electric vehicles at a fraction of the cost of a car.Inactive25
FinantierPlaid for Southeast AsiaInactive40
FinaryDiscord for investing.Inactive6
Forcyte BiotechnologiesDiscover drugs that control how much cells "squeeze" to treat diseaseInactive5
GalaxyInactive2
Gigs LiveVideo publishing and monetization platform for creators and artistsInactive3
GoBuild (fka Brick)The payments solution for small scale construction.Inactive18
GonddoWholesale marketplace for independent retailers buy & manage inventoryInactive6
HomeBreezeThe fastest and easiest way to make home upgradesInactive45
HuddlefireTurbocharge customer acquisition through exclusive SaaS partnershipsInactive2
InvoidCreate identity verification workflows the way you wantInactive15
JoinSubIndia's first aggregator and provider of local business subscriptionsInactive8
JuneJune is the new way to do product analyticsInactive6
KrabInstant loans for trucking companies in IndiaInactive9
LalaboxLive stream shopping for beauty productsInactive4
Launcher LabsMaker of consumer crypto apps: Launchcaster, Frameboard, MaindropInactive4
LovdIt's not used, it's Lovd.Inactive4
LunaticOperating System for server-side appsInactive2
MarcoPoloAlibaba for Latin AmericaInactive—
MeetAnywayWe help run engaging online conferences.Inactive3
MezliAutonomous restaurants that make great, affordable meals.Inactive8
Milk VideoCreate video testimonials with a linkInactive2
MindPortalThought-to-Language AI ModelsInactive10
Moonshot BrandsBuy and grow profitable e-commerce companies selling on Amazon and DTCInactive35
Moxion Power Co.Mobile Energy Storage TechnologyInactive380
MysticLow latency API to run and deploy ML modelsInactive11
MythiaRewards card for gamersInactive—
NeverlandThe first online home garden and lawn marketplaceInactive2
NimbusNimbus reduces Datadog costs by more than 60% without Manual EffortInactive3
NobleRisk decisioning platformInactive12
noHQInternational contractor and multi country payrollInactive2
NoyaRadically reducing capital costs and build time for direct air captureInactive7
ObservaCatch accidental database exposures before the bad guysInactive1
OutfitDIY renovations in a box. Materials, tools, and instructions deliveredInactive1
PensilNew-Age White Label Community Platform SDKs and APIs for Games,…Inactive4
PlatypusThe Distributed Data Operating SystemInactive3
PlaymakerCommunity for fantasy sports playersInactive5
PrendeaLive afterschool classes for Spanish-speaking kids ages 4 to 15.Inactive5
Purpose FinanceAccelerating the shift to a more transparent economyInactive3
Quadrant EyeBreaking new ground in online eyecare.Inactive4
QueenlyLeading marketplace for formalwearInactive13
SBX RoboticsSynthetic data for better vision.Inactive5
SlashAuthThe solution for fine-grained access control in web3Inactive3
TasteOnline marketplace for dinners shipped from great restaurantsInactive2
TriplitThe best database for app developersInactive3
UnfurlA virtual food hall that deliversInactive20
YourQuoteYourQuote is India's largest writing platformInactive9

How this is measured

Measured 2026-09-26 from Y Combinator's company directory. Team size is the number YC lists for the company, where it lists one. Survival here means listed Active; Acquired and Public are shown separately because YC's listing does not say whether an acquisition was a good outcome.

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Cite this page

Permanent URL: https://mentionfox.com/yc/outcomes/winter-2021
Last updated 2026-09-26
YC Winter 2021: 335 companies, 68% still active. MentionFox, 2026-09-26. https://mentionfox.com/yc/outcomes/winter-2021