Top accelerator startups

14,448 startups · 29 programs

YC Winter 2015

110 companies · 24% AI · 9 data · 15 devtools · started Jan 2015

The W15 companies

Developer toolsPublicGitLabA complete DevOps platform delivered as a single application.YC W15San FranciscoStartup →AIAcquiredPachydermData Versioning, Data Pipelines, and Data LineageYC W15San FranciscoStartup →OtherPublicEquipmentShareCloud solutions for the construction industry.YC W15ColumbiaStartup →AIRazorpayIndia's only full-stack financial solutions company for businesses.YC W15BengaluruStartup →AIGrubMarketAI-powered technology enabler and digital transformer of American…YC W15San FranciscoStartup →OtherPublicNotable LabsPersonalized drug discovery for blood cancer.YC W15San FranciscoStartup →OtherAcquiredChariotThe world's first private mass transit service providing a commuting…YC W15San FranciscoStartup →OtherPublicLucira HealthNext generation infectious disease test kitsYC W15EmeryvilleStartup →AIMagicExtremely talented assistants for busy peopleYC W15WashingtonStartup →OtherCleanlyLaundry & Dry Cleaning delivered.YC W15New York CityStartup →AIAkido LabsRebuilding healthcare with AI at the coreYC W15Los AngelesStartup →AIQventusWe automate operations for hospitals and health systemsYC W15San FranciscoStartup →AIPlatziTurning company knowledge into expert teamsYC W15San FranciscoStartup →OtherAcquiredBonfireBonfire is reimagining RFPs & bidding for gov procurement teamsYC W15ONStartup →AITempoLive home fitness training powered by computer vision.YC W15San FranciscoStartup →AIMashginSelf-Checkout using Computer Vision.YC W15San FranciscoStartup →OtherAcquiredTech in AsiaTech in Asia (YC W15) is the largest English-language technology…YC W15SingaporeStartup →OtherAcquiredLumiPackaging for online brands.YC W15Los AngelesStartup →OtherAcquiredRemixWe’re building a platform to empower cities to plan the best possible…YC W15San FranciscoStartup →OtherAcquiredVestBringing wider access to financial derivatives.YC W15McLeanStartup →OtherAcquiredNexTravelNexTravel is a centralized travel booking platform that helps…YC W15San FranciscoStartup →OtherAcquiredSpire HealthRemote patient monitoring for lung disease patients.YC W15San FranciscoStartup →OtherAcquiredBluesmartBluesmart makes smart luggage powered by an app to empower people to…YC W15New York CityStartup →AIAcquiredPaperspacePaperspace is a cloud platform for building and scaling AI…YC W15New York CityStartup →OtherAcquiredWayUpMarketplace for employers to recruit college students and recent gradsYC W15New York CityStartup →OtherAcquiredOpen ListingsA better way to buy a homeYC W15Los AngelesStartup →OtherAcquiredHigherMeHelping restaurant employers find & hire better employees fasterYC W15TorontoStartup →AIZeitviewInspection software for renewable energy & sustainable infrastructureYC W15Los AngelesStartup →OtherAcquiredPopular PaysSoftware for collaborating with content creators and influencersYC W15ChicagoStartup →Developer toolsAcquiredMoltineCommerce building blocks through simple APIs for websites & apps.…YC W15BostonStartup →AIAcquiredPomelloAnalytics software that helps companies measure organizational…YC W15San FranciscoStartup →DataMezmoObservability platform to control all of your log dataYC W15San FranciscoStartup →OtherNimbleRxOn-demand prescription delivery.YC W15San FranciscoStartup →AIAcquiredSigOptSigOpt is an Optimization-as-a-Service platform that seamlessly tunes…YC W15San FranciscoStartup →OtherBrightSunrun for the developing worldYC W15New York CityStartup →AIAcquiredSmarkingDigitize $655B parking industryYC W15San FranciscoStartup →AIAcquiredYhatEnd-to-end data science lifecycle management platform.YC W15New York CityStartup →AINumerion LabsArtificial intelligence for drug discovery.YC W15San FranciscoStartup →AIBankjoyAn end-to-end digital banking solution for banks and credit unionsYC W15TroyStartup →OtherAcquiredFinalA credit card that drastically reduces payment fraud and gives…YC W15San FranciscoStartup →Developer toolsAcquiredRaven TechOur vision is to build the next generation of iOS or Android, to…YC W15BeijingStartup →OtherAcquiredSeedMobile banking for small business.YC W15San FranciscoStartup →OtherAcquiredSmyteSmyte stops bad actors on social networks and marketplaces.YC W15San FranciscoStartup →OtherAcquiredVanhawksWe are making the smart carbon fibre commuting bike and platform for…YC W15TorontoStartup →OtherAcquiredMobydishMobyDish, a tech-enabled service, allowing anyone to place a catering…YC W15AustinStartup →DataAcquiredValor Water AnalyticsValor Water Analytics delivers a SaaS platform to utilities to detect…YC W15SeattleStartup →OtherAcquiredWorkLifeWorkLife is a SaaS application that helps teams have more effective…YC W15San FranciscoStartup →Developer toolsReadMeBeautiful, personalized, interactive developer hubsYC W15New York CityStartup →OtherLabdoorLabdoor is building the trusted online drugstore.YC W15San FranciscoStartup →OtherAcquiredShift LabsMakers of simple, affordable medical devices. Our award-winning…YC W15SeattleStartup →AIReplikaReplika is an AI friend that you can talk to designed to make you…YC W15San FranciscoStartup →AIShasqiTargeting Cancer with Click ChemistryYC W15San FranciscoStartup →OtherTabRevolutionising the way travellers discover, plan and book a tripYC W15LondonStartup →OtherAcquiredPretty InstantInventor of the first roaming-photo booth + pro photography platformYC W15BostonStartup →OtherMakrwatchScale new user acquisition with YouTube CreatorsYC W15New York CityStartup →OtherX-ZellEarly, pain-free cancer detection.YC W15BangkokStartup →OtherZenflowMedical device that provides a more effective, less invasive…YC W15San FranciscoStartup →OtherAcquiredBizzyBizzy is omni-channel marketing for ecommerce businesses.YC W15San FranciscoStartup →AIAcquiredCyberFendCyberfend delivers robust, real-time web and mobile security by…YC W15San FranciscoStartup →DataAcquiredOutboundCreate automated messages -- email, iOS/Android push, SMS and web…YC W15San FranciscoStartup →AIAcquiredYesGraphYesGraph recommends exactly who a user should invite to an app. Our…YC W15San FranciscoStartup →OtherSIRUMSIRUM is a “match.com” for unused medicine. We connect institutional…YC W15San FranciscoStartup →OtherMeadowPoint of Sale and Compliance SaaS for Cannabis DispensariesYC W15San FranciscoStartup →AITara AIMeet Tara AI, your new engineering efficiency co-pilot.YC W15San FranciscoStartup →OtherIndustrial MicrobesWe design and build microbes to make chemicals greener at lower cost.YC W15San FranciscoStartup →OtherTeamNoteMobile Productivity(Slack for mobile workforces)YC W15Hong KongStartup →DataeBrandvalueReal-time Nielsen ratings for Brands.Accelerate marketing and product…YC W15San FranciscoStartup →AIResolveSoftware to accelerate construction by finding issues in 3D BIMYC W15New York CityStartup →OtherLevel FramesSoftware eats custom framingYC W15New York CityStartup →OtherQuantierraSourcing investment real estateYC W15New York CityStartup →Developer toolsSails Co.Full-service web, mobile, & cloud studio providing professional…YC W15AustinStartup →OtherDemocracy EarthCensorship resistant democracies.YC W15MadridStartup →OtherThe Human UtilityThe Human Utility seeks to eliminate water service disconnections for…YC W15San FranciscoStartup →OtherGiveffectFundraising, Volunteer and Donor Management SaaS for nonprofits.YC W15New York CityStartup →OtherInactivePigeonlyThe affordable way to search, find & communicate with an incarcerated…YC W15Las VegasStartup →OtherBuildScienceThe operating system for commercial buildings.YC W15Niagara FallsStartup →OtherDemocracyOSOnline space for deliberation, policy making and democratic…YC W15Buenos AiresStartup →OtherGiveMeTapWe produce & sell stainless steel water bottles that enables people…YC W15LondonStartup →OtherFlipCommunity-driven marketplace for sneakers.YC W15Los AngelesStartup →OtherInactiveBooktropeBooktrope provides a software platform that makes it easy for…YC W15SeattleStartup →OtherInactiveVetProntoOn demand veterinary house calls.YC W15San FranciscoStartup →OtherInactiveUnderground CellarUpgrading Your Wine ExperienceYC W15San FranciscoStartup →OtherInactiveTranscripticThe robotic cloud laboratory for the life sciences.YC W15San FranciscoStartup →OtherInactiveDirect MatchA startup in Y Combinator's Winter 2015 batch, based in New York City.YC W15New York CityStartup →OtherInactiveNomikuWave our food in front of your Nomiku and have dinner for everyone…YC W15San FranciscoStartup →OtherInactiveThinAirIntelligent data security for teamsYC W15San FranciscoStartup →AIInactiveStandard CyborgBuid, test and deploy perception applicationsYC W15San FranciscoStartup →OtherInactiveDealyzeDealyze helps national retailers build exceptional customer and…YC W15San FranciscoStartup →OtherInactiveLullyLully is developing an under-the-mattress technology that precisely…YC W15San FranciscoStartup →AIInactiveDabbleA synthetic photo studio for e-commerceYC W15TorontoStartup →OtherInactivePakibleWe make it insanely easy to design, price, and manufacture custom…YC W15San FranciscoStartup →Developer toolsInactivePriimePriime is a company dedicated to advancements in technology around…YC W15San FranciscoStartup →AIInactive20nUsing AI to predict biochemistry for manufacturing and therapeuticsYC W15San FranciscoStartup →OtherInactive3dotA startup in Y Combinator's Winter 2015 batch, based in Ljubljana.YC W15LjubljanaStartup →DataInactiveAutomate AdsOn a mission to programmatically automate, optimize, and unify your…YC W15San FranciscoStartup →OtherInactiveBagaveev CorporationLaunch small satellitesYC W15San FranciscoStartup →OtherInactiveCribspotTech-Enabled Real Estate Company (YC W15)YC W15Ann ArborStartup →OtherInactiveGlassjarClean app for check writingYC W15San FranciscoStartup →OtherInactiveGroupAheadImprove communications with your group's own mobile app.YC W15San FranciscoStartup →OtherInactiveInstavestA startup in Y Combinator's Winter 2015 batch, based in San Francisco.YC W15San FranciscoStartup →OtherInactiveKickpayA platform to finance inventory for e-commerce companies.YC W15San FranciscoStartup →Developer toolsInactiveNextopNextop optimizes the path between your app and backend. Client…YC W15Startup →Developer toolsInactiveOmnirefSticky notes for code. (We're building a community-powered,…YC W15San FranciscoStartup →OtherInactiveRare DoorEmpowering brick-and-mortar retailers to sell more and engage shoppersYC W15San FranciscoStartup →OtherInactiveShift MessengerReal-time communication solution for retail and restaurant employees.YC W15San FranciscoStartup →OtherInactiveSparkGiftSparkGift makes it easy to send stocks and index funds as gifts to…YC W15San FranciscoStartup →OtherInactiveSpoilSpoil is gifting for the Snapchat generation.YC W15San FranciscoStartup →OtherInactiveWink HealthThe digital sleep clinicYC W15San FranciscoStartup →OtherInactiveReSchedule MedWe help medical residency programs create and manage their schedules,…YC W15New York CityStartup →DataInactiveRescue ForensicsActionable human trafficking intelligenceYC W15NashvilleStartup →
Company
GitLabA complete DevOps platform delivered as a single application.team of 2kpublicPublicDevtools
PachydermData Versioning, Data Pipelines, and Data Lineage6.3k starsteam of 60AcquiredAI, Data, Devtools
EquipmentShareCloud solutions for the construction industry.team of 5.4kpublicPublicOther
RazorpayIndia's only full-stack financial solutions company for businesses.team of 2.7kYC top companyActiveAI
GrubMarketAI-powered technology enabler and digital transformer of American…team of 4.5kYC top companyActiveAI
Notable LabsPersonalized drug discovery for blood cancer.team of 40publicPublicOther
ChariotThe world's first private mass transit service providing a commuting…team of 501acquiredAcquiredOther
Lucira HealthNext generation infectious disease test kitsteam of 43publicPublicOther
MagicExtremely talented assistants for busy peopleteam of 350hiringActiveAI
CleanlyLaundry & Dry Cleaning delivered.team of 2002 programsActiveOther
Akido LabsRebuilding healthcare with AI at the coreteam of 1kActiveAI
QventusWe automate operations for hospitals and health systemsteam of 230hiringActiveAI
PlatziTurning company knowledge into expert teamsteam of 1232 programsActiveAI
BonfireBonfire is reimagining RFPs & bidding for gov procurement teamsteam of 95acquiredAcquiredOther
TempoLive home fitness training powered by computer vision.team of 158hiringActiveAI
MashginSelf-Checkout using Computer Vision.team of 150hiringActiveAI
Tech in AsiaTech in Asia (YC W15) is the largest English-language technology…team of 70acquiredAcquiredOther
LumiPackaging for online brands.team of 67acquiredAcquiredOther
RemixWe’re building a platform to empower cities to plan the best possible…team of 65acquiredAcquiredOther
VestBringing wider access to financial derivatives.team of 65acquiredAcquiredOther
NexTravelNexTravel is a centralized travel booking platform that helps…team of 17acquiredAcquiredOther
Spire HealthRemote patient monitoring for lung disease patients.team of 52acquiredAcquiredOther
BluesmartBluesmart makes smart luggage powered by an app to empower people to…team of 51acquiredAcquiredOther
PaperspacePaperspace is a cloud platform for building and scaling AI…team of 50acquiredAcquiredAI, Devtools
WayUpMarketplace for employers to recruit college students and recent gradsteam of 50acquiredAcquiredOther
Open ListingsA better way to buy a hometeam of 48acquiredAcquiredOther
HigherMeHelping restaurant employers find & hire better employees fasterteam of 45acquiredAcquiredOther
ZeitviewInspection software for renewable energy & sustainable infrastructureteam of 200ActiveAI
Popular PaysSoftware for collaborating with content creators and influencersteam of 37acquiredAcquiredOther
MoltineCommerce building blocks through simple APIs for websites & apps.…team of 32acquiredAcquiredDevtools
PomelloAnalytics software that helps companies measure organizational…team of 8acquiredAcquiredAI
MezmoObservability platform to control all of your log datateam of 172ActiveData, Devtools
NimbleRxOn-demand prescription delivery.team of 130ActiveOther
SigOptSigOpt is an Optimization-as-a-Service platform that seamlessly tunes…team of 23acquiredAcquiredAI, Devtools
BrightSunrun for the developing worldteam of 100ActiveOther
SmarkingDigitize $655B parking industryteam of 17acquiredAcquiredAI, Data
YhatEnd-to-end data science lifecycle management platform.team of 17acquiredAcquiredAI, Data, Devtools
Numerion LabsArtificial intelligence for drug discovery.team of 67ActiveAI
BankjoyAn end-to-end digital banking solution for banks and credit unionsteam of 60ActiveAI
FinalA credit card that drastically reduces payment fraud and gives…team of 11acquiredAcquiredOther
Raven TechOur vision is to build the next generation of iOS or Android, to…team of 11acquiredAcquiredDevtools
SeedMobile banking for small business.team of 11acquiredAcquiredOther
SmyteSmyte stops bad actors on social networks and marketplaces.team of 11acquiredAcquiredOther
VanhawksWe are making the smart carbon fibre commuting bike and platform for…team of 11acquiredAcquiredOther
MobydishMobyDish, a tech-enabled service, allowing anyone to place a catering…team of 10acquiredAcquiredOther
Valor Water AnalyticsValor Water Analytics delivers a SaaS platform to utilities to detect…acquired2 programsAcquiredData
WorkLifeWorkLife is a SaaS application that helps teams have more effective…acquired2 programsAcquiredOther
ReadMeBeautiful, personalized, interactive developer hubsteam of 52ActiveDevtools
LabdoorLabdoor is building the trusted online drugstore.team of 112 programsActiveOther
Shift LabsMakers of simple, affordable medical devices. Our award-winning…team of 6acquiredAcquiredOther
ReplikaReplika is an AI friend that you can talk to designed to make you…team of 28ActiveAI
ShasqiTargeting Cancer with Click Chemistryteam of 28ActiveAI
TabRevolutionising the way travellers discover, plan and book a tripteam of 9hiringActiveOther
Pretty InstantInventor of the first roaming-photo booth + pro photography platformacquiredteam of 3AcquiredOther
MakrwatchScale new user acquisition with YouTube Creatorsteam of 19ActiveOther
X-ZellEarly, pain-free cancer detection.team of 19ActiveOther
ZenflowMedical device that provides a more effective, less invasive…team of 18ActiveOther
BizzyBizzy is omni-channel marketing for ecommerce businesses.acquiredteam of 2AcquiredOther
CyberFendCyberfend delivers robust, real-time web and mobile security by…acquiredteam of 2AcquiredAI
OutboundCreate automated messages -- email, iOS/Android push, SMS and web…acquiredteam of 2AcquiredData
YesGraphYesGraph recommends exactly who a user should invite to an app. Our…acquiredteam of 2AcquiredAI
SIRUMSIRUM is a “match.com” for unused medicine. We connect institutional…team of 15ActiveOther
MeadowPoint of Sale and Compliance SaaS for Cannabis Dispensariesteam of 14ActiveOther
Tara AIMeet Tara AI, your new engineering efficiency co-pilot.team of 13ActiveAI, Devtools
Industrial MicrobesWe design and build microbes to make chemicals greener at lower cost.team of 12ActiveOther
TeamNoteMobile Productivity(Slack for mobile workforces)team of 11ActiveOther
eBrandvalueReal-time Nielsen ratings for Brands.Accelerate marketing and product…team of 10ActiveData
ResolveSoftware to accelerate construction by finding issues in 3D BIMteam of 10ActiveAI
Level FramesSoftware eats custom framingteam of 5ActiveOther
QuantierraSourcing investment real estateteam of 5ActiveOther
Sails Co.Full-service web, mobile, & cloud studio providing professional…team of 4ActiveDevtools
Democracy EarthCensorship resistant democracies.team of 2ActiveOther
The Human UtilityThe Human Utility seeks to eliminate water service disconnections for…team of 2ActiveOther
GiveffectFundraising, Volunteer and Donor Management SaaS for nonprofits.hiringActiveOther
PigeonlyThe affordable way to search, find & communicate with an incarcerated…team of 402 programsInactiveOther
BuildScienceThe operating system for commercial buildings.ActiveOther
DemocracyOSOnline space for deliberation, policy making and democratic…ActiveOther
GiveMeTapWe produce & sell stainless steel water bottles that enables people…ActiveOther
FlipCommunity-driven marketplace for sneakers.ActiveOther
BooktropeBooktrope provides a software platform that makes it easy for…team of 51InactiveOther
VetProntoOn demand veterinary house calls.team of 51InactiveOther
Underground CellarUpgrading Your Wine Experienceteam of 26InactiveOther
TranscripticThe robotic cloud laboratory for the life sciences.team of 13InactiveOther
Direct MatchA startup in Y Combinator's Winter 2015 batch, based in New York City.team of 11InactiveOther
NomikuWave our food in front of your Nomiku and have dinner for everyone…team of 11InactiveOther
ThinAirIntelligent data security for teamsteam of 11InactiveOther
Standard CyborgBuid, test and deploy perception applicationsteam of 9InactiveAI, Devtools
DealyzeDealyze helps national retailers build exceptional customer and…team of 6InactiveOther
LullyLully is developing an under-the-mattress technology that precisely…team of 5InactiveOther
DabbleA synthetic photo studio for e-commerceteam of 3InactiveAI
PakibleWe make it insanely easy to design, price, and manufacture custom…team of 3InactiveOther
PriimePriime is a company dedicated to advancements in technology around…team of 3InactiveDevtools
20nUsing AI to predict biochemistry for manufacturing and therapeuticsteam of 2InactiveAI
3dotA startup in Y Combinator's Winter 2015 batch, based in Ljubljana.team of 2InactiveOther
Automate AdsOn a mission to programmatically automate, optimize, and unify your…team of 2InactiveData
Bagaveev CorporationLaunch small satellitesteam of 2InactiveOther
CribspotTech-Enabled Real Estate Company (YC W15)team of 2InactiveOther
GlassjarClean app for check writingteam of 2InactiveOther
GroupAheadImprove communications with your group's own mobile app.team of 2InactiveOther
InstavestA startup in Y Combinator's Winter 2015 batch, based in San Francisco.team of 2InactiveOther
KickpayA platform to finance inventory for e-commerce companies.team of 2InactiveOther
NextopNextop optimizes the path between your app and backend. Client…team of 2InactiveDevtools
OmnirefSticky notes for code. (We're building a community-powered,…team of 2InactiveDevtools
Rare DoorEmpowering brick-and-mortar retailers to sell more and engage shoppersteam of 2InactiveOther
Shift MessengerReal-time communication solution for retail and restaurant employees.team of 2InactiveOther
SparkGiftSparkGift makes it easy to send stocks and index funds as gifts to…team of 2InactiveOther
SpoilSpoil is gifting for the Snapchat generation.team of 2InactiveOther
Wink HealthThe digital sleep clinicteam of 2InactiveOther
ReSchedule MedWe help medical residency programs create and manage their schedules,…InactiveOther
Rescue ForensicsActionable human trafficking intelligenceInactiveData

About W15

Every company, one tile each

By category

W15 by category

Where are they now

W15 by status

Top tags in W15

  • Fintech8
  • Machine Learning7
  • Marketplace7
  • Developer Tools6
  • Biotech5
  • Payments4
  • E-commerce4
  • Healthcare4
  • Medical Devices4
  • Analytics4