Winter 2021
336 companies in this batch
Y Combinator runs two batches per year—Winter and Summer—each funding around 200 startups. This page lists every company from the Winter 2021 batch, sourced from YC's public data. Click any company to see founder details including LinkedIn profiles. Use our MCP server to query this data directly from Claude or other AI assistants.
Browse other batches:
Scorecard Ratings:
Repeat Founder(34)
Highly Technical(55)
Deep Industry Exp(40)
Top Companies
Moxion Power Co.
Zepto
All Companies
Abacum
Aerotime
AgendaPro
Alba Orbital
Albedo
Alinea
Alltruists
Alokai
Alpas
Anima
arnata
Arpio
Atomic Industries
Atrato
Aurabeat
Auricle
Authologic
authzed
Avenue
Avion School
Aviron Interactive
Avocado
Awari
AXAR AI
Axiom.ai
Axle Health
Axolo
Betterhalf
BeWell Digital
Bimaplan
Biodock
Blink
Bloom
Bluelight
boitas.com
BotBuilt
BrioHR
Bristle
Broad
Bueno Finance
BusinessOnBot
Camber
Camlist
Camp
Care Weather
CashBook
Charge Running
Chatwoot
Cheqout
Chorus Sleep
Clay
Clear
clicOH
ClipDrop
cloud humans
Codeball
Coderhouse
Codingal
Compose.ai
ControlHub
CoVerified
Curvenote
Cyble
Darrow
Dashlabs.ai
Dataherald
Datrics
Dayra
Degrees of Freedom
Djamo
DreamWorld
Dressd
Dyte
Eat Blueprint
Emerge Tools
Enable Us
Encord
Enode
Entelexo Biotherapeutics
eqtble
Estoca
Expent Inc
Fable
Faction
Fathom
Feroot Security
FifthTry
Finantier
Finary
Finary.com
Finley
Fintoc
Firstbase.io
FirstSupport.ai
FitHub
Flextock
Flok
FlowEQ
FlutterFlow
Flux
Flux Auto
Forcyte Biotechnologies
Foster
Fountain9
Fractional
Friz
FunctionUp (FanPlay)
Furmacy
Gaiia
Galaxy
Gerald Technologies, Inc
Gigs
Gigs Live
GimBooks
GoBuild (fka Brick)
Gonddo
Gradia Health
GreaseBoss
Great Question
Greywing
Gridware
GroMo
H3X Technologies
Hapi
Haystack
Hermes Robotics
Homebase
HomeBreeze
hoop.dev
Houm
Howdy.com
HUBUC
Huddlefire
Hudu
Humaans
HyperGlue
inBalance
Infracost
InpharmD
Invoid
Jetdocs
Jiga
JoinSub
Journey
Juicy Marbles
June
Kanda
Kidato
Kilobaser
Kitemaker
Kiwify
Kodo
Krab
Kredi
Lalabox
Lamar Health
Laudspeaker
Launcher Labs
Lendflow
LightTwist
Lion Pose
LiveFlow
Logica
LogisticsOS
Lovd
Lunatic
Lygg
Machine26
MagicBell
Manara
MarcoPolo
Mayan
Measured
MedMe Health
MeetAnyway
Mendel
Meru.com
Mezli
Milk Video
Mindee
MindPortal
ModernLoop
Moichor
Mono
Moonshot Brands
Moonvalley
Morada Uno
My NextDerma
Mystic
Mythia
Nano Technologies
Navattic
Neverland
NextPay
Nimbus
Nirva
Noble
noHQ
Nourish
Noya
Nuntius Therapeutics
Observa
OctiFi
OlaClick
Ollama
Ontop
Orbillion Bio
Outfit
Pagaloop
Pangea.app
Parsagon
Partnered
Pensil
peopleCQ
Per Diem
Pesto
Phoenix
Pibit.ai
PingPong
PipeBio
Platypus
Playmaker
Poliglota
Popl
PowerRouter
Pragmatic Leaders (Ankai Inc)
Preki
Prendea
Prequel
Procoto
Promoted.ai
Prospa
Pry Financials
Purpose Finance
Pyroscope
Quadrant Eye
Quadrant Health
Queenly
Quicknode
QuotaBook
R.care
R2
Reclaim Protocol
Recover
Redcliffe Lifetech
REGENT
Rejoy Health
Remora
Reshape Biotech
Resquared
Rethoric
Rinsed
RocketSDR
ROGER
Roin Technologies
Routine
Rulebricks
Runway
SBX Robotics
Seer
Segments.ai
Sendbox
Serna Bio
Shepherd
SigNoz
Simplify
Sivo
SlashAuth
Smartcuts
Solo
Somos
Soraban
Spline
Spokn
SpruceID
SST
Stacksi
Stayflexi
Stoke Space
Striga
Sturdy
Supadock
Svix
Swadesi Way
SwiftSku
Taloflow
Taste
TechBiz
Terapify
Terra API
Text Blaze
The Third Place
Tilt
Tint
Topkey
Topline Pro
Tractian
Treinta
Trela
Trendpop
Trestle Biotherapeutics
Triomics
Triplit
True3D Labs
Tupelo
Turing College
Udhaar App
Uiflow
Unfurl
Unschool
unSurvey
UPchieve
Valink Therapeutics
Vapi
Veera Health
Vendease
Venu AI
Verak
Version Story
Voosh
Wasp
Waydev
Waypoint
Webiny
Weekday
weweb.io
Worksphere
Wyndly
YourQuote
Z1
Zealth
Ziina
zingbus
ZOKO