Top accelerator startups

Startups14,448Programs29

14,448 startups · 29 programs

Inactive startups

1,108 companies listed as inactive by YC or their program's page · 401 in AI, data or developer tools

Inactive: data, AI and devtools

Developer toolsInactiveValenceUnified prediction markets trading platformYC W26San FranciscoStartup →AIInactiveAcrelyEnterprise Voice AgentsYC S25PittsburghStartup →AIInactiveRovrAI FDE Engine that runs your engineering workflowsYC F25San FranciscoStartup →Developer toolsInactiveOddpoolInstitutional infrastructure for prediction marketsYC X26San FranciscoStartup →AIInactiveSmartbaseAI-native ERP for manufacturersYC X26San FranciscoStartup →Developer toolsInactiveKlaus AIFast and Safe OpenClaw on the cloudYC W26San FranciscoStartup →AIInactiveMendralAI DevOps EngineerYC W26San FranciscoStartup →AIInactiveQ2QWe help private equity teams find acquisition targets fasterYC W26San FranciscoStartup →AIInactiveCoastsLocalhost service isolation and orchestration for git worktreesYC F25Startup →Developer toolsInactiveDomeA unified API for prediction markets, like Kalshi and PolymarketYC F25Startup →AIInactiveSylvianSpecialized AI Agents.YC F25San FranciscoStartup →AIInactiveK-Scale LabsOpen-source humanoid robotsYC W24San FranciscoStartup →AIInactiveCaucusAI CRM for GovernmentYC X25Startup →AIInactivePercivalAccelerating data analysis for researchYC X25San FranciscoStartup →AIInactiveCloseraAI Shopping Agent for Your Ecommerce StoreYC S25New York CityStartup →AIInactiveNuntiusMaking Models Follow Rules.YC S25San FranciscoStartup →AIInactiveTectoAIA Platform for AI GovernanceYC S25San FranciscoStartup →AIInactiveAltrinaThe SOP Automation PlatformYC W25San FranciscoStartup →AIInactiveKanava AIYour First AI Sales Hire for Wholesale DistributorsYC X25San FranciscoStartup →AIInactiveOliveBuild internal tools with AIYC W25San FranciscoStartup →AIInactiveSublingualDaily productivity trackerYC W25San FranciscoStartup →AIInactiveMentlioEngineering Intelligence and Token Optimization for the AI-Coding EraYC S26San FranciscoStartup →AIInactivecamferBuilding the world’s first AI mechanical engineer.YC S24San FranciscoStartup →AIInactiveLilac LabsWe automate the person taking orders at drive-thrus with a voice AIYC S24San FranciscoStartup →AIInactiveSendme, IncOn demand provider of meat to households and food businessesYC W22IbadanStartup →AIInactiveAtlaThe improvement engine for AI agentsYC S23LondonStartup →AIInactiveTesseralThe open source platform for managing identity in business softwareYC W24San FranciscoStartup →DataInactiveDGI ApparelExpedia for ordering blank apparelYC W24New York CityStartup →AIInactiveTuskAI agent that generates unit and integration testsYC W24San FranciscoStartup →AIInactiveInvariaThe next generation logging and observability platformYC S24LondonStartup →AIInactiveGaitBuilding Dev Infra for AI Software EngineersYC F24San FranciscoStartup →AIInactiveMatchaThe best way to hire clinical talent.YC F24New York CityStartup →AIInactivesupercontrastAI Co-Pilot for DesignYC F24San FranciscoStartup →AIInactiveZeroframePushing the boundaries of AIYC F24San FranciscoStartup →AIInactiveHomeBreezeThe fastest and easiest way to make home upgradesYC W21San FranciscoStartup →AIInactiveAtlasModern customer support platform replacement for Intercom and ZendeskYC W22San FranciscoStartup →AIInactiveMovleyYour e-commerce brand's product quality control department.YC S23New York CityStartup →DataInactiveMantleBioTransform scientific data into discoveriesYC S23Startup →AIInactiveUnhazeThe right leads at the right time for B2B salesYC S23CopenhagenStartup →AIInactiveStructured LabsThe publishing layer for the agentic internetYC S23San FranciscoStartup →AIInactiveBlume BenefitsThe AI copilot for health insurance brokers.YC W24San FranciscoStartup →Developer toolsInactiveFileforgeAPI For PDF Document WorkflowsYC W24San FranciscoStartup →AIInactiveLanternPostgres vector database extension to build AI applicationsYC W24San FranciscoStartup →AIInactiveBaseline AIAI document creation and data management for clinical trialsYC S24San FranciscoStartup →AIInactivedeepsiliconSoftware and hardware to run neural networks faster and cheaperYC S24San FranciscoStartup →AIInactiveFlyflowThe easiest way to find high-quality sales leadsYC S24Startup →AIInactivePreThe AI accountability agent for startup foundersYC S24Lake OswegoStartup →AIInactiveRiskAngleAI medical summaries in minutesYC S24San FranciscoStartup →AIInactiveTivaraThe AI workforce for medical groupsYC S24New York CityStartup →AIInactiveKobo360Africa's leading supply chain technology platform.YC S18LagosStartup →AIInactiveAXAR AIMulti-agent orchestration platformYC W21San FranciscoStartup →AIInactiveMineThe AI personal finance company.YC S21New York CityStartup →AIInactiveDataheraldEmbed NL-to-SQL into your Product 📈YC W21Los AngelesStartup →AIInactiveAvairSenseWe go all out to Build the Smartest AI-Enabled Cameras!YC W22BengaluruStartup →AIInactiveRehook.aiRun, Track and manage any and all user incentive campaigns.YC W22BengaluruStartup →Developer toolsInactiveWingbackWingback provides tools and APIs for SaaS pricing and packaging.YC W22San FranciscoStartup →AIInactivengrow.aiLow-code SaaS for marketing in push notificationsYC W22San FranciscoStartup →AIInactiveAldaraHOA manager with automated operationsYC S22BarcelonaStartup →AIInactiveCustomerOSUncover high-fit leads already silently engaging with your brandYC S22LondonStartup →AIInactiveZoltar LabsAI-assisted CX tool built with your knowledge.YC S22New York CityStartup →Developer toolsInactiveIntegration LabsThe Unified API for Business Financial DataYC S22BengaluruStartup →AIInactiveSonnetMeeting notes and CRM, automatedYC S22San FranciscoStartup →AIInactiveCreatorMLFoundation Model for Human AttentionYC W23New York CityStartup →AIInactiveLucaThe Modern Pricing Engine for RetailYC W23San FranciscoStartup →AIInactiveLynxAI platform for investigating and resolving engineering incidentsYC W23San FranciscoStartup →AIInactivePaperplaneCredit risk management platform for builders' merchantsYC W23New York CityStartup →AIInactiveCodeStoryAide is an AI-native , privacy-first IDE built on top of VSCodeYC S23LondonStartup →AIInactiveRemyMaking it simpler for medical clinics to work with insuranceYC S23San FranciscoStartup →AIInactiveSmobiSend texts your customers actually want over RCSYC S23New York CityStartup →AIInactiveSynchSupercharging SalesYC S23New York CityStartup →AIInactiveFetchrThe Personal Shopper in Your PocketYC W23San FranciscoStartup →AIInactiveNeptyneThe programmable spreadsheet.YC W23New York CityStartup →AIInactiveUpfrontA personal assistant for every homeownerYC W23San FranciscoStartup →AIInactiveBranch AIAI Overview Search, as a ServiceYC S23SingaporeStartup →AIInactiveSidenoteMeeting follow-up, automatedYC S23San FranciscoStartup →AIInactiveAbelTransforming document review for litigation teamsYC W24San FranciscoStartup →AIInactiveAedilicOpen-Source AI-generated image/deepfake detectionYC W24San FranciscoStartup →AIInactivecrmCopilotGive Salesforce the AI upgrade it deservesYC W24San FranciscoStartup →AIInactiveEnginesSetup any repo with one commandYC W24Startup →AIInactiveGlimmerAI search for massive PDFsYC W24San FranciscoStartup →AIInactiveMango HealthAI Therapy for OCDYC W24Startup →AIInactivePatchworkYour team’s AI powered communication toolYC W24San FranciscoStartup →AIInactivePreloopTranslate your experimental scripts into production ML servicesYC W24SeattleStartup →AIInactiveQuaryThe first in-browser analytics engineering platformYC W24LondonStartup →AIInactiveRadMate AICopilot for radiologistsYC W24San FranciscoStartup →AIInactiveSoundry AIRemix any song into any styleYC W24SeattleStartup →AIInactiveThorntaleThe world's best presentation editor, powered by AI.YC W24San FranciscoStartup →AIInactiveToolifyBuild internal tools with AIYC W24BengaluruStartup →AIInactiveThreadThread makes it incredibly easy to dress well, using stylists and AIYC S12LondonStartup →Developer toolsInactiveEivodA developer tools startup in Y Combinator's Summer 2007 batch, based in Boston.YC S07BostonStartup →AIInactiveFileStackAcquired by Xenon Ventures.We enable website developers to hook into…YC S12San AntonioStartup →AIInactiveSeerslabWe are providing AR technologies and contents to app developersYC S16San FranciscoStartup →AIInactivePillarPlusSoftware to automatically create construction blueprintsYC W20MHStartup →AIInactiveSynapsica HealthcareAI-enabled automation of diagnostic radiology workflow and reporting.YC W20BengaluruStartup →Developer toolsInactiveDatreeDatree prevents Kubernetes misconfigurations from reaching productionYC W20Tel Aviv-YafoStartup →AIInactiveInvoidCreate identity verification workflows the way you wantYC W21GurugramStartup →AIInactiveTydoTurn your data into intelligenceYC S20Los AngelesStartup →AIInactiveSenpAI.GGPersonal gaming coach for PC gamers globallyYC S21BostonStartup →AIInactiveShuttleBuild Backends. Fast.YC S20LondonStartup →AIInactiveMysticLow latency API to run and deploy ML modelsYC W21AustinStartup →Developer toolsInactiveTriggerBetter PhoneGap.YC W08San FranciscoStartup →AIInactiveOneStopKitchenAI-Driven Tech & Space Optimization to Scale RestaurantsYC S21San FranciscoStartup →AIInactiveMindPortalThought-to-Language AI ModelsYC W21LondonStartup →AIInactiveFlikeFlike's AI crafts sales emails that convertYC W22San FranciscoStartup →AIInactiveRuth HealthTelehealth hub for pregnant people 🧡YC S21New York CityStartup →AIInactiveSquire.aiNever code alone.YC S21San FranciscoStartup →AIInactivePloomberHeroku for AIYC W22New York CityStartup →AIInactiveSpokenNever overpay onlineYC S21New York CityStartup →AIInactiveDegrees of FreedomDoF provides a high quality, affordable higher education alternative.YC W21New York CityStartup →AIInactiveCherry RecommendsPromotion management platformYC W22SingaporeStartup →AIInactiveAirtrain AINo-code data curation for LLM fine-tuning and evaluation.YC S22San FranciscoStartup →Developer toolsInactiveBridgecardCard issuer for AfricaYC S22LagosStartup →AIInactiveJasmine EnergyClaim solar incentives with AIYC S22WashingtonStartup →AIInactiveCoffeeAIInstant, hyper-personalized, AI-powered outreach messagesYC W22AucklandStartup →AIInactiveCriyaAI that builds GTM assets in secondsYC W22San FranciscoStartup →AIInactiveNophinAI Deal Screening Analyst for Commercial Real Estate AcquisitionsYC W22New York CityStartup →Developer toolsInactivePelmPlaid for utilitiesYC W22San FranciscoStartup →Developer toolsInactiveVesselDeveloper-first, native integration platform for GTM toolsYC W22San FranciscoStartup →AIInactiveCAPSULEBuy anything you find on social mediaYC S22San FranciscoStartup →AIInactivePhindAI search engineYC S22San FranciscoStartup →
Company
ValenceUnified prediction markets trading platformteam of 3YC W26InactiveDevtools
AcrelyEnterprise Voice Agentsteam of 6YC S25InactiveAI
RovrAI FDE Engine that runs your engineering workflowsteam of 3YC F25InactiveAI, Devtools
OddpoolInstitutional infrastructure for prediction marketsteam of 2YC X26InactiveDevtools
SmartbaseAI-native ERP for manufacturersteam of 2YC X26InactiveAI
Klaus AIFast and Safe OpenClaw on the cloudteam of 2YC W26InactiveDevtools
MendralAI DevOps Engineerteam of 2YC W26InactiveAI, Devtools
Q2QWe help private equity teams find acquisition targets fasterteam of 2YC W26InactiveAI
CoastsLocalhost service isolation and orchestration for git worktreesteam of 2YC F25InactiveAI, Devtools
DomeA unified API for prediction markets, like Kalshi and Polymarketteam of 2YC F25InactiveDevtools
SylvianSpecialized AI Agents.team of 2YC F25InactiveAI
K-Scale LabsOpen-source humanoid robotsteam of 102 programsYC W24 +1InactiveAI
CaucusAI CRM for Governmentteam of 3YC X25InactiveAI
PercivalAccelerating data analysis for researchteam of 3YC X25InactiveAI, Data, Devtools
CloseraAI Shopping Agent for Your Ecommerce Storeteam of 2YC S25InactiveAI
NuntiusMaking Models Follow Rules.team of 2YC S25InactiveAI, Devtools
TectoAIA Platform for AI Governanceteam of 2YC S25InactiveAI
AltrinaThe SOP Automation Platformteam of 4YC W25InactiveAI
Kanava AIYour First AI Sales Hire for Wholesale Distributorsteam of 2YC X25InactiveAI
OliveBuild internal tools with AIteam of 2YC W25InactiveAI
SublingualDaily productivity trackerteam of 2YC W25InactiveAI, Devtools
MentlioEngineering Intelligence and Token Optimization for the AI-Coding EraYC S26InactiveAI, Devtools
camferBuilding the world’s first AI mechanical engineer.team of 4YC S24InactiveAI, Devtools
Lilac LabsWe automate the person taking orders at drive-thrus with a voice AIteam of 4YC S24InactiveAI
Sendme, IncOn demand provider of meat to households and food businessesteam of 40YC W22InactiveAI
AtlaThe improvement engine for AI agentsteam of 10YC S23InactiveAI, Data, Devtools
TesseralThe open source platform for managing identity in business softwareteam of 5YC W24InactiveAI, Devtools
DGI ApparelExpedia for ordering blank apparelteam of 4YC W24InactiveData
TuskAI agent that generates unit and integration teststeam of 4YC W24InactiveAI, Devtools
InvariaThe next generation logging and observability platformteam of 3YC S24InactiveAI, Devtools
GaitBuilding Dev Infra for AI Software Engineersteam of 2YC F24InactiveAI, Devtools
MatchaThe best way to hire clinical talent.team of 2YC F24InactiveAI
supercontrastAI Co-Pilot for Designteam of 2YC F24InactiveAI, Devtools
ZeroframePushing the boundaries of AIteam of 2YC F24InactiveAI
HomeBreezeThe fastest and easiest way to make home upgradesteam of 45YC W21InactiveAI
AtlasModern customer support platform replacement for Intercom and Zendeskteam of 18YC W22InactiveAI
MovleyYour e-commerce brand's product quality control department.team of 8YC S23InactiveAI
MantleBioTransform scientific data into discoveriesteam of 7YC S23InactiveData
UnhazeThe right leads at the right time for B2B salesteam of 6YC S23InactiveAI
Structured LabsThe publishing layer for the agentic internetteam of 5YC S23InactiveAI, Data, Devtools
Blume BenefitsThe AI copilot for health insurance brokers.team of 3YC W24InactiveAI
FileforgeAPI For PDF Document Workflowsteam of 3YC W24InactiveDevtools
LanternPostgres vector database extension to build AI applicationsteam of 3YC W24InactiveAI, Data, Devtools
Baseline AIAI document creation and data management for clinical trialsteam of 2YC S24InactiveAI
deepsiliconSoftware and hardware to run neural networks faster and cheaperteam of 2YC S24InactiveAI
FlyflowThe easiest way to find high-quality sales leadsteam of 2YC S24InactiveAI
PreThe AI accountability agent for startup foundersteam of 2YC S24InactiveAI
RiskAngleAI medical summaries in minutesteam of 2YC S24InactiveAI
TivaraThe AI workforce for medical groupsteam of 2YC S24InactiveAI
Kobo360Africa's leading supply chain technology platform.team of 204YC S18InactiveAI
AXAR AIMulti-agent orchestration platformteam of 40YC W21InactiveAI, Devtools
MineThe AI personal finance company.team of 18YC S21InactiveAI
DataheraldEmbed NL-to-SQL into your Product 📈team of 18YC W21InactiveAI
AvairSenseWe go all out to Build the Smartest AI-Enabled Cameras!team of 14YC W22InactiveAI
Rehook.aiRun, Track and manage any and all user incentive campaigns.team of 12YC W22InactiveAI
WingbackWingback provides tools and APIs for SaaS pricing and packaging.team of 12YC W22InactiveDevtools
ngrow.aiLow-code SaaS for marketing in push notificationsteam of 11YC W22InactiveAI
AldaraHOA manager with automated operationsteam of 10YC S22InactiveAI
CustomerOSUncover high-fit leads already silently engaging with your brandteam of 10YC S22InactiveAI
Zoltar LabsAI-assisted CX tool built with your knowledge.team of 9YC S22InactiveAI
Integration LabsThe Unified API for Business Financial Datateam of 8YC S22InactiveDevtools
SonnetMeeting notes and CRM, automatedteam of 7YC S22InactiveAI
CreatorMLFoundation Model for Human Attentionteam of 6YC W23InactiveAI, Data
LucaThe Modern Pricing Engine for Retailteam of 6YC W23InactiveAI
LynxAI platform for investigating and resolving engineering incidentsteam of 5YC W23InactiveAI, Devtools
PaperplaneCredit risk management platform for builders' merchantsteam of 5YC W23InactiveAI
CodeStoryAide is an AI-native , privacy-first IDE built on top of VSCodeteam of 4YC S23InactiveAI, Devtools
RemyMaking it simpler for medical clinics to work with insuranceteam of 4YC S23InactiveAI
SmobiSend texts your customers actually want over RCSteam of 4YC S23InactiveAI, Devtools
SynchSupercharging Salesteam of 4YC S23InactiveAI
FetchrThe Personal Shopper in Your Pocketteam of 4YC W23InactiveAI
NeptyneThe programmable spreadsheet.team of 4YC W23InactiveAI, Data
UpfrontA personal assistant for every homeownerteam of 4YC W23InactiveAI
Branch AIAI Overview Search, as a Serviceteam of 3YC S23InactiveAI, Data
SidenoteMeeting follow-up, automatedteam of 3YC S23InactiveAI
AbelTransforming document review for litigation teamsteam of 2YC W24InactiveAI
AedilicOpen-Source AI-generated image/deepfake detectionteam of 2YC W24InactiveAI
crmCopilotGive Salesforce the AI upgrade it deservesteam of 2YC W24InactiveAI
EnginesSetup any repo with one commandteam of 2YC W24InactiveAI, Devtools
GlimmerAI search for massive PDFsteam of 2YC W24InactiveAI, Data
Mango HealthAI Therapy for OCDteam of 2YC W24InactiveAI
PatchworkYour team’s AI powered communication toolteam of 2YC W24InactiveAI
PreloopTranslate your experimental scripts into production ML servicesteam of 2YC W24InactiveAI, Data, Devtools
QuaryThe first in-browser analytics engineering platformteam of 2YC W24InactiveAI, Data
RadMate AICopilot for radiologiststeam of 2YC W24InactiveAI
Soundry AIRemix any song into any styleteam of 2YC W24InactiveAI
ThorntaleThe world's best presentation editor, powered by AI.team of 2YC W24InactiveAI
ToolifyBuild internal tools with AIteam of 2YC W24InactiveAI, Devtools
ThreadThread makes it incredibly easy to dress well, using stylists and AIteam of 92YC S12InactiveAI
EivodA developer tools startup in Y Combinator's Summer 2007 batch, based in Boston.team of 51YC S07InactiveDevtools
FileStackAcquired by Xenon Ventures.We enable website developers to hook into…team of 50YC S12InactiveAI, Devtools
SeerslabWe are providing AR technologies and contents to app developersteam of 39YC S16InactiveAI
PillarPlusSoftware to automatically create construction blueprintsteam of 30YC W20InactiveAI
Synapsica HealthcareAI-enabled automation of diagnostic radiology workflow and reporting.team of 30YC W20InactiveAI
DatreeDatree prevents Kubernetes misconfigurations from reaching productionteam of 16YC W20InactiveDevtools
InvoidCreate identity verification workflows the way you wantteam of 15YC W21InactiveAI
TydoTurn your data into intelligenceteam of 14YC S20InactiveAI, Data
SenpAI.GGPersonal gaming coach for PC gamers globallyteam of 12YC S21InactiveAI
ShuttleBuild Backends. Fast.team of 12YC S20InactiveAI, Devtools
MysticLow latency API to run and deploy ML modelsteam of 11YC W21InactiveAI, Devtools
TriggerBetter PhoneGap.team of 112 programsYC W08 +1InactiveDevtools
OneStopKitchenAI-Driven Tech & Space Optimization to Scale Restaurantsteam of 10YC S21InactiveAI
MindPortalThought-to-Language AI Modelsteam of 10YC W21InactiveAI
FlikeFlike's AI crafts sales emails that convertteam of 8YC W22InactiveAI
Ruth HealthTelehealth hub for pregnant people 🧡team of 8YC S21InactiveAI
Squire.aiNever code alone.team of 8YC S21InactiveAI, Devtools
PloomberHeroku for AIteam of 7YC W22InactiveAI, Data, Devtools
SpokenNever overpay onlineteam of 7YC S21InactiveAI
Degrees of FreedomDoF provides a high quality, affordable higher education alternative.team of 7YC W21InactiveAI
Cherry RecommendsPromotion management platformteam of 6YC W22InactiveAI
Airtrain AINo-code data curation for LLM fine-tuning and evaluation.team of 5YC S22InactiveAI, Devtools
BridgecardCard issuer for Africateam of 5YC S22InactiveDevtools
Jasmine EnergyClaim solar incentives with AIteam of 5YC S22InactiveAI
CoffeeAIInstant, hyper-personalized, AI-powered outreach messagesteam of 5YC W22InactiveAI
CriyaAI that builds GTM assets in secondsteam of 5YC W22InactiveAI
NophinAI Deal Screening Analyst for Commercial Real Estate Acquisitionsteam of 5YC W22InactiveAI
PelmPlaid for utilitiesteam of 5YC W22InactiveDevtools
VesselDeveloper-first, native integration platform for GTM toolsteam of 5YC W22InactiveDevtools
CAPSULEBuy anything you find on social mediateam of 4YC S22InactiveAI
PhindAI search engineteam of 4YC S22InactiveAI, Data

All 1,108 inactive startups →

Share inactive, by YC batch

Share of each batch inactive
S05: 38%W06: 43%S06: 70%W07: 36%S07: 58%W08: 67%2008S08: 77%W09: 56%S09: 46%W10: 44%S10: 33%W11: 38%S11: 33%W12: 41%2012S12: 46%W13: 30%S13: 42%W14: 24%S14: 35%W15: 29%S15: 30%W16: 33%2016S16: 35%W17: 28%S17: 28%W18: 27%S18: 24%W19: 22%S19: 27%W20: 27%2020S20: 21%W21: 20%S21: 17%W22: 13%S22: 16%W23: 14%S23: 10%W24: 10%2024S24: 4%F24: 4%W25: 2%X25: 2%S25: 2%F25: 3%W26: 3%X26: 1%S26: 0%F26: 0%F26