Top accelerator startups

14,448 startups · 29 programs

YC Winter 2021

336 companies · 30% AI · 17 data · 65 devtools · started Jan 2021

The W21 companies

AIOllamaGet up and running with large language models.YC W21San FranciscoStartup →OtherZepto10-Minute Grocery Delivery in IndiaYC W21MHStartup →AITractianPhysical AI for asset-heavy industriesYC W21AtlantaStartup →OtherStoke SpaceSeamless mobility to, through, and from space. It starts with 100%…YC W21SeattleStartup →OtherNourishTelehealth dietitians covered by insuranceYC W21New York CityStartup →OtherAcquiredR2Embedded lending infrastructureYC W21Mexico CityStartup →OtherRedcliffe LifetechRedcliffe Labs is India's Largest Omni-channel Diagnostics platformYC W21DelhiStartup →AICybleCyble - World’s First Intelligence-Driven, AI-Native Security…YC W21San FranciscoStartup →AIAcquiredFathomThe most flexible AI meeting notetaker ever built.YC W21San FranciscoStartup →AILiveFlowThe Unified AI-ERP & FP&A PlatformYC W21New York CityStartup →AIVapiVoice AI for developers.YC W21San FranciscoStartup →OtherHoumAll-in-one real estate marketplace for Latin AmericaYC W21SantiagoStartup →AITintMakes it easy for tech platforms to embed insurance into productsYC W21San FranciscoStartup →AIEncordThe data layer for physical AIYC W21LondonStartup →AIGigsThe OS for Embedded TelecomYC W21San FranciscoStartup →AIAbacumThe AI-native FP&A platform that helps Finance teams drive business…YC W21New York CityStartup →OtherGridwareProtecting the grid today, preparing the grid for tomorrowYC W21San FranciscoStartup →OtherDjamoChallenger Bank for consumers in French speaking Africa.YC W21AbidjanStartup →OtherSomosInternet for the urban developing world.YC W21MedellínStartup →OtherVendeaseWhere restaurants in Africa buy food suppliesYC W21LagosStartup →Developer toolsQuicknodeInfrastructure and tools to build and scale blockchain applications.YC W21MiamiStartup →OtherCamberAdmin automation for healthcareYC W21New York CityStartup →AICodingalLeading online after-school for kids & teens to learn AI & codingYC W21BengaluruStartup →AIGroMoApp for independent agents to sell financial products in IndiaYC W21GurugramStartup →Developer toolsAcquiredDyteReal-time audio & video SDKs, ready to launch 🚀YC W21BengaluruStartup →AIAcquiredVerakBetter Business Insurance for MSMEs in IndiaYC W21BengaluruStartup →OtherAxle HealthScheduling and workforce management SaaS for home healthcare providersYC W21Los AngelesStartup →OtherKiwifyCreate & sell online coursesYC W21SCStartup →AIPibit.aiThe AI Underwriting OS for Commercial, Specialty & E&S insuranceYC W21San FranciscoStartup →AIMoonvalleyBuilding the next generation AI creative studioYC W21TorontoStartup →OtherAcquiredAwariReinventing lifelong learning for the future of work.YC W21São PauloStartup →OtherAcquiredFinleyStreamline your debt capital raise and managementYC W21San FranciscoStartup →OtherOntopSimplifying hiring and payments for the global workforceYC W21MiamiStartup →OtherPoliglotaThe online language school for Latam, with groups led by an instructorYC W21SantiagoStartup →OtherclicOHAmazon-like logistics for e-commerce companies in LatamYC W21Buenos AiresStartup →AICoderhouseLive online courses that turn learners into buildersYC W21Buenos AiresStartup →Developer toolsEnodeEnergy Orchestration PlatformYC W21OsloStartup →OtherPhoenixCanada's digital health clinic for menYC W21TorontoStartup →AIPoplYour AI GTM platform for In-Person EventsYC W21New York CityStartup →OtherProspaBanking for businessesYC W21LondonStartup →OtherRemoraModular carbon captureYC W21DetroitStartup →AIEstocaThe Logistics Operating System for E-commerce in LatAmYC W21São PauloStartup →OtherMorada UnoWe underwrite and insure house rentals in LatamYC W21Mexico CityStartup →OtherHowdy.comWe help US tech companies hire and manage software engineers in LATAMYC W21AustinStartup →AIAtomic IndustriesSoftware orchestrated mass production of plasticsYC W21ClevelandStartup →OtherMedMe HealthSoftware for pharmacies to move beyond dispensingYC W21TorontoStartup →OtherShepherdModernizing commercial insuranceYC W21San FranciscoStartup →OtherStayflexiOperating System for Hotels and Vacation RentalsYC W21San FranciscoStartup →OtherZiinaA digital wallet for the Middle East & North AfricaYC W21DubaiStartup →OtherAlbedoFull-stack VLEO satellite missionsYC W21DenverStartup →Developer toolsFlutterFlowApplication Development Platform (Native Mobile + Web Apps)YC W21San FranciscoStartup →OtherFirstbase.ioThe all-in-one startup operating systemYC W21New York CityStartup →AISorabanAI tax workflow platform for accounting firmsYC W21TempeStartup →AITriomicsAI Agents for Oncology EHRsYC W21New York CityStartup →AITuring CollegeAI-driven online tech school for busy professionalsYC W21VilniusStartup →Developer toolsAcquiredUiflowNo-code platform for enterprise software companiesYC W21San FranciscoStartup →OtherAcquiredFunctionUp (FanPlay)A skill-tech platform that runs placement bootcampsYC W21BengaluruStartup →AILamar HealthTake Care of Shitty Paperwork for Expensive DrugsYC W21San FranciscoStartup →OtherTrelaYour one-stop shop to eat well in BrazilYC W21São PauloStartup →AIHumaansAI-Powered HRIS for high performing teamsYC W21LondonStartup →OtherHapiStocks and cryptos trading app with zero commissions and no minimums…YC W21San FranciscoStartup →OtherKodoCorporate card & spend management platform for Indian startupsYC W21MHStartup →Developer toolsAuthologicStripe for online identity verificationYC W21WarsawStartup →OtherAcquiredBueno FinanceBuilding Chime for IndiaYC W21GurugramStartup →Developer toolsAlokaiFrontend Platform for eCommerceYC W21WarsawStartup →Othergaiiaall-in-one operating system (OS) for telcosYC W21RemoteStartup →AIDarrowBring Justice to LightYC W21Tel Aviv-YafoStartup →OtherAviron InteractiveAviron transforms workouts with game-based exercise machines, making…YC W21TorontoStartup →OtherpeopleCQEmployer backed payroll advances for employees in EgyptYC W21CairoStartup →Developer toolsGreat QuestionUser research on autopilot.YC W21San FranciscoStartup →OtherResquaredMarketing automation platform for selling to local businesses.YC W21PhiladelphiaStartup →Developer toolsSigNozOpen source alternative to DataDogYC W21San FranciscoStartup →AIWeekdayAI recruiter that runs outbound sourcing campaigns to find top talentYC W21BengaluruStartup →DataSwiftSkuManagement and analytics software for convenience storesYC W21New York CityStartup →OtherAcquiredPrekiShopify for LatAmYC W21BogotáStartup →AIAcquiredEnable UsDigital Sales Rooms (Acquired by MindTickle)YC W21San FranciscoStartup →OtherAcquiredStrigaCompliant Crypto and Banking InfrastructureYC W21TallinnStartup →OtherAtratoEnabling consumers split the cost of purchases without a credit cardYC W21Mexico CityStartup →OtherFinary.comThe new wealth manager for EuropeYC W21ParisStartup →AIRinsedSoftware to run car washes moving to a monthly subscription modelYC W21New York CityStartup →OtherZ1Digital bank for teenagers in LatAm connected to prepaid cardYC W21São PauloStartup →OtherMeru.comThe one-stop-shop for auto-parts in Mexico.YC W21Mexico CityStartup →OtherKrediRocket Mortgage for LatAm.YC W21MonterreyStartup →AIauthzedAuthorization Infrastructure securing AI at OpenAI, Zoom, & moreYC W21New York CityStartup →AIRocketSDRAI Native Sales Outreach PlatformYC W21BengaluruStartup →AITopline ProGenerative AI powered Shopify for home service professionalsYC W21New York CityStartup →AISpoknAI-powered video platform for Internal Comms and HR teamsYC W21New York CityStartup →AIAcquiredPromoted.aiDramatically better search and ads for marketplacesYC W21SeattleStartup →OtherAcquiredOctiFiBuy Now Pay Later for Southeast AsiaYC W21SingaporeStartup →AIAcquiredTaoFiThe financial layer for decentralized AIYC W21San FranciscoStartup →OtherManaraConnecting top Middle East talent to global tech jobsYC W21San FranciscoStartup →Developer toolsFintocAccount-to-Account payments in Mexico and Chile.YC W21SantiagoStartup →OtherFitHubThe one-stop shop for healthy productsYC W21BarranquillaStartup →AIMindeeAI Document Understanding APIYC W21ParisStartup →AITreintaSoftware and AI tools for SMBs in the US and Latin AmericaYC W21BogotáStartup →OtherH3X TechnologiesThe lightest electric aircraft motors in the world.YC W21DenverStartup →AIFlux AutoPhysical AI for Warehouses and FactoriesYC W21BengaluruStartup →OtherLendflowEmbedded lending infrastructure for software companiesYC W21AustinStartup →OtherBetterhalfIndia’s first and only marriage super appYC W21BengaluruStartup →AIBusinessOnBotAutomated user acquisition & selling on WhatsApp for businessesYC W21BengaluruStartup →
Company
OllamaGet up and running with large language models.181.7k starstrending 2 daysActiveAI, Devtools
Zepto10-Minute Grocery Delivery in Indiateam of 1.3kYC top companyActiveOther
TractianPhysical AI for asset-heavy industriesteam of 530hiringActiveAI
Stoke SpaceSeamless mobility to, through, and from space. It starts with 100%…team of 305hiringActiveOther
NourishTelehealth dietitians covered by insuranceteam of 250hiringActiveOther
R2Embedded lending infrastructureteam of 100acquiredAcquiredOther
Redcliffe LifetechRedcliffe Labs is India's Largest Omni-channel Diagnostics platformteam of 3.5kActiveOther
CybleCyble - World’s First Intelligence-Driven, AI-Native Security…team of 197hiringActiveAI
FathomThe most flexible AI meeting notetaker ever built.team of 95acquiredAcquiredAI
LiveFlowThe Unified AI-ERP & FP&A Platformteam of 512 programsActiveAI
VapiVoice AI for developers.team of 502 programsActiveAI, Devtools
HoumAll-in-one real estate marketplace for Latin Americateam of 400ActiveOther
TintMakes it easy for tech platforms to embed insurance into productsteam of 402 programsActiveAI, Devtools
EncordThe data layer for physical AIteam of 150hiringActiveAI, Devtools
GigsThe OS for Embedded Telecomteam of 150hiringActiveAI, Devtools
AbacumThe AI-native FP&A platform that helps Finance teams drive business…team of 125hiringActiveAI
GridwareProtecting the grid today, preparing the grid for tomorrowteam of 125hiringActiveOther
DjamoChallenger Bank for consumers in French speaking Africa.team of 250ActiveOther
SomosInternet for the urban developing world.team of 250ActiveOther
VendeaseWhere restaurants in Africa buy food suppliesteam of 250ActiveOther
QuicknodeInfrastructure and tools to build and scale blockchain applications.team of 115hiringActiveDevtools
CamberAdmin automation for healthcareteam of 101hiringActiveOther
CodingalLeading online after-school for kids & teens to learn AI & codingteam of 100hiringActiveAI
GroMoApp for independent agents to sell financial products in Indiateam of 100hiringActiveAI
DyteReal-time audio & video SDKs, ready to launch 🚀team of 45acquiredAcquiredDevtools
VerakBetter Business Insurance for MSMEs in Indiateam of 45acquiredAcquiredAI
Axle HealthScheduling and workforce management SaaS for home healthcare providersteam of 282 programsActiveOther
KiwifyCreate & sell online coursesteam of 200ActiveOther
Pibit.aiThe AI Underwriting OS for Commercial, Specialty & E&S insuranceteam of 200ActiveAI
MoonvalleyBuilding the next generation AI creative studioteam of 95hiringActiveAI
AwariReinventing lifelong learning for the future of work.team of 35acquiredAcquiredOther
FinleyStreamline your debt capital raise and managementteam of 32acquiredAcquiredOther
OntopSimplifying hiring and payments for the global workforceteam of 186ActiveOther
PoliglotaThe online language school for Latam, with groups led by an instructorteam of 170ActiveOther
clicOHAmazon-like logistics for e-commerce companies in Latamteam of 155ActiveOther
CoderhouseLive online courses that turn learners into buildersteam of 70hiringActiveAI
EnodeEnergy Orchestration Platformteam of 70hiringActiveDevtools
PhoenixCanada's digital health clinic for menteam of 70hiringActiveOther
PoplYour AI GTM platform for In-Person Eventsteam of 70hiringActiveAI
ProspaBanking for businessesteam of 70hiringActiveOther
RemoraModular carbon captureteam of 452 programsActiveOther
EstocaThe Logistics Operating System for E-commerce in LatAmteam of 150ActiveAI
Morada UnoWe underwrite and insure house rentals in Latamteam of 150ActiveOther
Howdy.comWe help US tech companies hire and manage software engineers in LATAMteam of 140ActiveOther
Atomic IndustriesSoftware orchestrated mass production of plasticsteam of 60hiringActiveAI
MedMe HealthSoftware for pharmacies to move beyond dispensingteam of 60hiringActiveOther
ShepherdModernizing commercial insuranceteam of 60hiringActiveOther
StayflexiOperating System for Hotels and Vacation Rentalsteam of 58hiringActiveOther
ZiinaA digital wallet for the Middle East & North Africateam of 57hiringActiveOther
AlbedoFull-stack VLEO satellite missionsteam of 55hiringActiveOther
FlutterFlowApplication Development Platform (Native Mobile + Web Apps)team of 55hiringActiveDevtools
Firstbase.ioThe all-in-one startup operating systemteam of 50hiringActiveOther
SorabanAI tax workflow platform for accounting firmsteam of 50hiringActiveAI
TriomicsAI Agents for Oncology EHRsteam of 50hiringActiveAI
Turing CollegeAI-driven online tech school for busy professionalsteam of 50hiringActiveAI
UiflowNo-code platform for enterprise software companiesteam of 21acquiredAcquiredDevtools
FunctionUp (FanPlay)A skill-tech platform that runs placement bootcampsteam of 20acquiredAcquiredOther
Lamar HealthTake Care of Shitty Paperwork for Expensive Drugsteam of 152 programsActiveAI
TrelaYour one-stop shop to eat well in Brazilteam of 120ActiveOther
HumaansAI-Powered HRIS for high performing teamsteam of 48hiringActiveAI
HapiStocks and cryptos trading app with zero commissions and no minimums…team of 45hiringActiveOther
KodoCorporate card & spend management platform for Indian startupsteam of 45hiringActiveOther
AuthologicStripe for online identity verificationteam of 44hiringActiveDevtools
Bueno FinanceBuilding Chime for Indiateam of 18acquiredAcquiredOther
AlokaiFrontend Platform for eCommerceteam of 100ActiveDevtools
gaiiaall-in-one operating system (OS) for telcosteam of 100ActiveOther
DarrowBring Justice to Lightteam of 95ActiveAI
Aviron InteractiveAviron transforms workouts with game-based exercise machines, making…team of 90ActiveOther
peopleCQEmployer backed payroll advances for employees in Egyptteam of 85ActiveOther
Great QuestionUser research on autopilot.team of 41hiringActiveDevtools
ResquaredMarketing automation platform for selling to local businesses.team of 40hiringActiveOther
SigNozOpen source alternative to DataDogteam of 38hiringActiveDevtools
WeekdayAI recruiter that runs outbound sourcing campaigns to find top talentteam of 38hiringActiveAI
SwiftSkuManagement and analytics software for convenience storesteam of 35hiringActiveData
PrekiShopify for LatAmteam of 15acquiredAcquiredOther
Enable UsDigital Sales Rooms (Acquired by MindTickle)team of 14acquiredAcquiredAI
StrigaCompliant Crypto and Banking Infrastructureteam of 14acquiredAcquiredOther
AtratoEnabling consumers split the cost of purchases without a credit cardteam of 80ActiveOther
Finary.comThe new wealth manager for Europeteam of 80ActiveOther
RinsedSoftware to run car washes moving to a monthly subscription modelteam of 80ActiveAI
Z1Digital bank for teenagers in LatAm connected to prepaid cardteam of 80ActiveOther
Meru.comThe one-stop-shop for auto-parts in Mexico.team of 70ActiveOther
KrediRocket Mortgage for LatAm.team of 66ActiveOther
authzedAuthorization Infrastructure securing AI at OpenAI, Zoom, & moreteam of 31hiringActiveAI, Data, Devtools
RocketSDRAI Native Sales Outreach Platformteam of 30hiringActiveAI
Topline ProGenerative AI powered Shopify for home service professionalsteam of 28hiringActiveAI
SpoknAI-powered video platform for Internal Comms and HR teamsteam of 202 programsActiveAI
Promoted.aiDramatically better search and ads for marketplacesteam of 12acquiredAcquiredAI
OctiFiBuy Now Pay Later for Southeast Asiateam of 11acquiredAcquiredOther
TaoFiThe financial layer for decentralized AIteam of 11acquiredAcquiredAI
ManaraConnecting top Middle East talent to global tech jobsteam of 103 programsActiveOther
FintocAccount-to-Account payments in Mexico and Chile.team of 60ActiveDevtools
FitHubThe one-stop shop for healthy productsteam of 60ActiveOther
MindeeAI Document Understanding APIteam of 60ActiveAI, Devtools
TreintaSoftware and AI tools for SMBs in the US and Latin Americateam of 60ActiveAI
H3X TechnologiesThe lightest electric aircraft motors in the world.team of 58ActiveOther
Flux AutoPhysical AI for Warehouses and Factoriesteam of 56ActiveAI
LendflowEmbedded lending infrastructure for software companiesteam of 55ActiveOther
BetterhalfIndia’s first and only marriage super appteam of 25hiringActiveOther
BusinessOnBotAutomated user acquisition & selling on WhatsApp for businessesteam of 25hiringActiveAI

About W21

Every company, one tile each

By category

W21 by category

Where are they now

W21 by status

Top tags in W21

  • Fintech58
  • Developer Tools34
  • Marketplace20
  • E-commerce19
  • Education14
  • Consumer14
  • Open Source13
  • Consumer Health Services13
  • Climate13
  • eLearning12