Fundraising FoxPhosphor Capital
Seed · 1 people tracked
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Investment thesis
Phosphor Capital invests in companies from each Y Combinator batch, typically writing checks between $100,000 and $500,000. The firm invests at seed stage and internationally.
Team · 1 people
from public directoriesWhat they invest in
from 50 of 50 portfolio companiesAI & Machine Learning ×42Enterprise Software ×33SaaS ×19Data & Infrastructure ×11Developer Tools ×11Consumer ×8Advanced Manufacturing ×6Fintech ×6
HQs:United States×41United Kingdom×5Belgium×1Sweden×1
Investments · 50 tracked
founders shown can be your intro path
AgentMail provides an email inbox API that enables AI agents to create and manage their own email accounts.
AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US
Haakam Aujla(Founder)inMichael Kim(Founder)inAdi Singh(Founder)in
Co-investorsGeneral CatalystPioneerY CombinatorDharmesh ShahKleiner PerkinsRice Capital+2 more
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Allus.ai provides an AI-powered solution for industrial quality inspection, process monitoring, and anomaly detection across manufacturing sectors.
Advanced ManufacturingAI & Machine LearningDeep TechRoboticsSaaSAtlanta, US
Zhisen An(Founder)inChris Kai Cui(Founder)inShijie Wang(Founder)in
Co-investorsPioneerPonderosa VenturesTranspose Platform ManagementY Combinator007 Venture PartnersDecacorn Capital+8 more
AnswerThis is an AI research assistant that helps researchers find, summarize, and cite academic papers from a database of 300+ million papers.
AI & Machine LearningConsumerEdTechSan Francisco, US
Ayush Garg(Founder)inRyan McCarroll(Founder)in
Co-investorsY Combinator
Autosana provides automated end-to-end testing for mobile and web applications, generating and executing tests directly from code changes across iOS, Android, and web platforms.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareSan Francisco, US
Yuvan Sundrani(Founder)inJason Steinberg(Founder)in
Co-investorsDG Daiwa VenturesPioneerY Combinator468 CapitalAmino CapitalBand of Angels+8 more
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Autumn provides usage tracking, gating, and billing infrastructure for software companies.
Enterprise SoftwareFintechSaaSLondon, GB
Ayush Rodrigues(Founder)inJohn Yeo(Founder)in
Co-investorsOrange CollectivePioneerTranspose Platform ManagementY CombinatorEight CapitalFounder Capital+7 more
Autumn AI identifies early-stage startup founders and companies through signals like incorporation filings, GitHub activity, social media follows, and hiring pages before they appear in public directories.
AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareSan Francisco, US
Vishnu Sampathkumar(Founder)inShiv Kampani(Founder)in
Co-investorsY CombinatorAmino CapitalHaystackMetsu CapitalNexus Venture PartnersRebel Fund+2 more
Balance provides real-time, audit-ready accounting and bookkeeping powered by AI, combining automated financial processing with dedicated human accountants.
AI & Machine LearningEnterprise SoftwareFintechSaaSLondon, GB
Mathias Løvring(Co-Founder & CEO)inGus Levinson(Founder)inEmil Munk(Founder)in
Co-investorsY CombinatorFounder CapitalGV (Google Ventures)
Beyond Reach Labs develops deployable solar arrays for space infrastructure that deliver high power per launch.
Advanced ManufacturingDeep TechHardwareSpace TechNew York City, US
Mitchell Fogelson(Founder | CEO)inPele Collins(Founder | CTO)in
Co-investorsTranspose Platform ManagementY CombinatorCapitalize VCClimate CapitalFounder CapitalInterlagos+9 more
Booko uses AI to predict which service appointment slots won't fill and automatically applies targeted discounts to recover revenue from unsold time.
AI & Machine LearningEnterprise SoftwareRetail TechSaaSSan Francisco, US
Will Hall(Founder)inArjun Saluja(Founder)in
Co-investorsY CombinatorAlumni VenturesBatch VenturesBoxGroupC Square CapitalPremise Ventures+1 more
Cardboard is an AI-powered video editing platform that automatically finds key moments in footage, generates captions and dubbing, and produces multi-format videos optimized for different platforms.
AI & Machine LearningCreator EconomyEnterprise SoftwareSan Francisco, US
Saksham Aggarwal(Founder)inIshan Sharma(Founder)in
Co-investorsY CombinatorCRV (Charles River Ventures)Lightspeed Venture PartnersParable Partners
Cascade enables companies to fine-tune AI models using their own data and processes to generate higher-quality results at lower cost.
Data & InfrastructureEnterprise SoftwareSan Francisco, US
Adam AlSayyad(Founder)inHaluk Cem Demirhan(Founder)in
Co-investorsSoma CapitalY CombinatorFPVHOF CapitalSpot VCSV Angel
Certus AI provides an AI phone system that answers incoming calls for restaurants, takes orders, upsells menu items, and integrates directly with POS systems.
AI & Machine LearningEnterprise SoftwareSaaSSan Francisco, US
Gurveer Singh(Founder)inAdam Gamieldien(Founder)inIsaac Nichols(Founder)in
Co-investorsPioneerSaints CapitalY CombinatorFounder CapitalTeam Ignite
Convexia provides AI-powered drug discovery and evaluation software that scans global sources for overlooked drug assets and runs deep in silico simulations across 50+ models to assess binding, toxicity, pharmacokinetics, and immunogenicity.
AI & Machine LearningBiotechDeep TechHealthtechSan Francisco, US
Ayaan Parikh(Founder)inRahul Vijayan(Co-Founder & CTO)in
Co-investorsGravityY CombinatorAliaksandr HudzilinBasis Set VenturesETA Capital PartnersGaingels+5 more
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Dedalus Labs provides virtual machines that boot in 250ms with Linux isolation, persistent storage, and scale-to-zero billing.
AI & Machine LearningCloud ComputingData & InfrastructureDeveloper ToolsEnterprise SoftwareSan Francisco, US
Cathy Di(Founder)inWindsor Nguyen(Co-Founder)in
Co-investorsY CombinatorActivant CapitalKindred VenturesSaga VenturesThe E14 FundTranspose Platform Management+11 more
Didit provides identity verification and KYC/KYB infrastructure for organizations worldwide, offering a programmable API with real-time fraud detection, deepfake protection, and support for 48+ languages.
CybersecurityData & InfrastructureEnterprise SoftwareFintechSan Francisco, US
Alberto Rosas(Founder)inAlejandro Rosas(Founder)inDavid Paschkes(Executive Officer, Director)
Co-investorsY CombinatorLobster CapitalOrange CollectivePioneerRoar VenturesSaaSholic+11 more
Halluminate provides reinforcement learning environments for financial services firms to train frontier AI models on workflows in investment banking, private equity, and consulting.
AI & Machine LearningEnterprise SoftwareFintechSan Francisco, US
Jerry Wu(Founder)inWyatt Marshall(Founder)in
Co-investorsAlchemist AcceleratorAntigravity CapitalMGV.VCOrange CollectiveTranspose Platform ManagementY Combinator+6 more
Hillclimb develops training data for recursive self-improvement in AI models, focusing on aggregating human research data and automating reinforcement learning environment creation.
AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareSan Francisco, US
Co-investorsY CombinatorAbstract VenturesAndreessen HorowitzDon HoFAST — by GETTYLABFelicis Ventures+5 more
Hyperspell builds a context platform that connects to enterprise data sources (Slack, email, documents, CRMs, ticketing systems) and synthesizes them into a unified, permission-aware knowledge graph accessible to AI agents.
AI & Machine LearningData & InfrastructureEnterprise SoftwareSaaSSan Francisco, US
Conor Brennan-Burke(Founder)inManu Ebert(Founder)in
Co-investorsDraper B1Fjor FoundersImagination CapitalMento vcOlive Tree CapitalPerceptive Ventures Management Company, Llc+21 more
Jinba is a platform for building and deploying enterprise AI workflows in plain language, with built-in compliance controls, security features, and on-premises deployment options.
AI & Machine LearningEnterprise SoftwareSaaS
Shoya Matsumori(Founder)inTakuya Norisugi(Founder)in
Co-investorsPioneerTranspose Platform ManagementY CombinatorALLEGIS CAPITALDG Daiwa VenturesEight Capital+7 more
Kita provides document processing and credit assessment software for lenders to evaluate borrowers in underserved markets.
AI & Machine LearningFintechSaaSSan Francisco, US
Carmel Limcaoco(Founder)inRhea Malhotra(Founder)in
Co-investorsY CombinatorGolden Gate VenturesKaya FoundersAltara VenturesApex Star Capital Nebula FundBEENEXT+5 more
Laurence provides automated PPC (pay-per-click) advertising optimization for Amazon sellers, using algorithmic models to manage and improve campaign profitability.
AdTechData & InfrastructureE-commerceEnterprise SoftwareSaaSNew York City, US
Matthew Chen(Founder)inLeo Gierhake(Founder)in
Co-investorsScribble VenturesY CombinatorAndreessen HorowitzBoxGroupCRV (Charles River Ventures)GG2+6 more
Lua is an AI workforce platform that enables teams to work alongside AI agents in a shared workspace with unified memory and governance.
AI & Machine LearningEnterprise SoftwareSaaSLondon, GB
Lorcan O Cathain(Founder)inStefan Kruger(Founder)in
Co-investorsDigital Currency GroupEnza CapitalP1 VenturesPioneerTRAC (Third Round Analytics Capital)Transpose Platform Management+10 more
Luel develops proprietary technology for machine perception and AI system training across multiple modalities.
AI & Machine LearningData & InfrastructureEnterprise SoftwareSan Francisco, US
William Namgyal(Founder)inInigo Lenderking(Founder)in
Co-investorsLightspeed Venture PartnersOrange CollectiveSpot VCY CombinatorAdapt VenturesBasis Set Ventures+9 more
Manufact provides a platform and open-source SDK for developers to build, test, and deploy MCP (Model Context Protocol) applications and servers for AI agents and chat interfaces like ChatGPT and Claude.
AI & Machine LearningData & InfrastructureDeveloper ToolsEnterprise SoftwareSan Francisco, US
Pietro Zullo(Founder)inLuigi Pederzani(Founder)in
Co-investorsY CombinatorItalian Founders FundPeak XV PartnersPioneerACE & CompanyAgrolimen Ventures+6 more
Mendral is an AI DevOps platform that automates manual DevOps work for engineering teams through three always-on agents for security, reliability, and performance, plus custom automations.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareSan Francisco, US
Sam Alba(Co-founder & CEO)inAndrea Luzzardi(Co-founder & CTO)in
Co-investorsY CombinatorOutlier GrovePioneerPredictive VCTranspose Platform ManagementAgrolimen Ventures+7 more
Milliray develops millimeter-wave radar systems designed to detect, track, and classify small unmanned aircraft systems that conventional radar misses.
Advanced ManufacturingAI & Machine LearningDefense TechHardwareRoboticsLondon, GB
Matthew Moore(Founder)inThomas Doherty(Founder)inJordina Frances de Mas(Founder)in
Co-investorsPioneerY CombinatorAgrolimen VenturesCapitalize VCCosmic Venture PartnersEight Capital+9 more
Moritz is an AI-native law firm that combines senior lawyers with custom software to deliver legal work for technology companies across the EU, US, and Australia, using fixed fees and rapid turnaround rather than hourly billing.
AI & Machine LearningEnterprise SoftwareLegalTechSaaSSan Francisco, US
Pamir Ehsas(Founder & CEO)inStefan Mandaric(Founder)inDaniel Dalla Vedova(Founding Head of Legal & COO)in
Co-investorsY Combinator20VCInception FundPioneerTranspose Platform ManagementUrban Innovation+12 more
Nexus provides AI infrastructure for enterprises that connects multiple systems and agents through a single integration layer, enabling businesses to build and deploy autonomous agents without managing disconnected tools.
AI & Machine LearningEnterprise SoftwareSaaSBrussels, BE
Assem Chammah(Founder)inShady Al Shoha(Founder)in
Co-investorsTranspose Platform ManagementY CombinatorGeneral CatalystMetsu CapitalTwenty Two Ventures
Notte provides browser infrastructure and APIs for AI agents and automations to interact with websites and web applications.
AI & Machine LearningCloud ComputingDeveloper ToolsEnterprise SoftwareSan Francisco, US
Andrea Pinto(Founder CEO)inLucas Giordano(Founder)in
Co-investorsDigital Currency GroupTranspose Platform ManagementY Combinator2100 VenturesGalion.exeKima Ventures+3 more
NovaFlow is an AI-powered data analysis platform that automates bioinformatics workflows for life science researchers and biotech labs, transforming raw experimental data into publication-ready results in minutes using large language models and validated computational pipelines.
AI & Machine LearningBiotechHealthtechSaaSSan Francisco, US
Aman Agarwal(Founder/CEO)inAmulya Balakrishnan(Founder/ CTO)in
Co-investorsFundersClubY CombinatorTwenty Two VenturesWefunder
Nozomio develops AI products focused on improving how systems understand and maintain context in machine learning applications.
AI & Machine LearningConsumerDeveloper ToolsEnterprise SoftwareSan Francisco, US
Arlan Rakhmetzhanov(Founder)in
Co-investorsAbstraction CapitalBoxGroupLocalGlobeTranspose Platform ManagementY Combinator20VC+13 more
o11 builds AI agents integrated into enterprise applications.
AI & Machine LearningEnterprise SoftwareFintechSaaSSan Francisco, US
Aryah Oztanir(Founder / CEO)inAjay Misra(Founder)in
Co-investorsY Combinator645 VenturesAccelCare ShiftCRV (Charles River Ventures)Eight Capital+1 more
Opennote is an AI-powered learning platform that consolidates lecture materials, notes, and readings in one place and provides contextual explanations, practice tools, and video tutorials to help students understand course content.
AI & Machine LearningConsumerEdTechSaaSSan Francisco, US
Rishi Srihari(Founder)inAbhi Arya(Co-Founder and CTO)inVedant Vyas(Founder)in
Co-investorsAfore CapitalSancus VenturesY CombinatorAcrew CapitalAndreessen HorowitzLong Journey Ventures+2 more
Origin generates spatial molecular maps from patient tumor samples to enable cancer biology research in native tissue context.
AI & Machine LearningBiotechHealthtechMedical DevicesSan Francisco, US
Yash Rathod(Founder)inMalhar Bhide(Founder)inFounder of Siren Biotechnology(Founder & CEO, Siren Biotechnology · UCSF)Unnamed MIT Professor(Professor of Computer Science, MIT · Broad Institute)Dean at Grainger College of Engineering, UIUC(Dean, Grainger College of Engineering, UIUC)
Co-investorsGlasswing VenturesY CombinatorAndreessen HorowitzTopology Ventures
Parameter builds autonomous security software that continuously monitors and discovers vulnerabilities in modern applications as they are deployed, leveraging AI for application security teams.
AI & Machine LearningCybersecurityDeveloper ToolsEnterprise SoftwareSan Francisco, US
Prama Yudhistira(Founder)inHuzaifa Ahmad(Co-Founder)inAhmad Khan(Co-Founder)inPrama Yudhistria(Co-Founder)
Co-investorsY CombinatorNorthside VenturesPioneerTranspose Platform ManagementAgrolimen VenturesAndreessen Horowitz+12 more
Parrot is a mobile app for learning Spanish through short-form video content created by native speakers, using comprehensible input methodology.
ConsumerEdTechSan Francisco, US
Amir Hanna(Founder)inErik Dahl(Founder)inJulia Hudea(Founder)in
Co-investorsPioneerTranspose Platform ManagementY CombinatorAlumni VenturesAmino CapitalAmplify Partners+7 more
Perseus Defense builds autonomous defense systems.
Advanced ManufacturingAI & Machine LearningDefense TechHardwareRoboticsAustin, US
Jason Cornelius(Co-Founder, CEO)inSteve Messinger(Co-Founder, CTO)in
Co-investorsAlumni VenturesBow CapitalLobster CapitalOlive Tree CapitalY CombinatorBatch Ventures+13 more
Pingo is an AI-powered language learning platform that teaches users through real-time conversational practice in multiple languages.
AI & Machine LearningConsumerEdTechSan Francisco, US
Michael Xing(Founder)inMorrie Schonfeld(Founder)in
Co-investorsMatrixPioneerScript CapitalTranspose Platform ManagementY CombinatorAlt Capital+10 more
Pocket is a wearable AI device with accompanying app that captures voice conversations and thoughts, then uses AI models to transcribe, summarize, generate action items, and create mind maps.
AI & Machine LearningConsumerHardwareSan Francisco, US
Akshay Narisetti(Founder)inGabriel Dymowski(Founder)in
Co-investorsAccelBerkeley FrontierLobster CapitalTRAC (Third Round Analytics Capital)Transpose Platform ManagementY Combinator+5 more
A telemedicine platform offering AI-assisted diagnosis and consultations, with on-demand access to licensed physicians for $39 per visit.
AI & Machine LearningDigital HealthHealthtechWellness & FitnessSan Francisco, US
Meer Patel(Founder)inSanjit Menon(Founder)inVishvam Rawal(Founder)in
Co-investorsPioneerY CombinatorMetsu CapitalRebel FundRobinhood
Revion builds software tools for automotive technicians to automate routine tasks like inspection documentation and repair information lookup.
Advanced ManufacturingAI & Machine LearningEnterprise SoftwareSaaSNew York City, US
Zaki GW(Founder)inHanbo Xie(Founder)in
Co-investorsPioneerY Combinator20VCLiquid Ventures
Samora provides an AI voice platform that enables automated outbound calling in 20+ languages with natural conversation capabilities.
AI & Machine LearningEnterprise SoftwareSaaS
Kartik Sawhney(Founder)inVineeth Kumar(Founder)inShakul Raj Sonker(Founder)in
Co-investorsY CombinatorOurCrowdRebel FundRobinhood
SellRaze is a mobile app for reselling secondhand items online, letting users create listings from an image, text, or barcode and crosslist them across marketplaces like eBay, Poshmark, Depop, Mercari, and Facebook.
AI & Machine LearningConsumerE-commerceMarketplacesSan Francisco, US
Jeff Mao(Founder)inTyler Ma(Founder)in
Co-investorsLobster CapitalPioneerTranspose Platform ManagementY CombinatorAgrolimen VenturesAmino Capital+9 more
Stellon Labs develops compact AI models optimized for edge computing and resource-constrained hardware environments.
AI & Machine LearningDeep TechDeveloper ToolsEnterprise SoftwareSan Francisco, US
Rohan Joshi(Founder)inDivam Gupta(Founder)in
Co-investorsBerkeley FrontierTranspose Platform ManagementY Combinator468 CapitalBlueRun VenturesDeVC+5 more
Stilta builds software for patent protection and intellectual property work, serving patent attorneys and innovators who depend on patent safeguards.
AI & Machine LearningEnterprise SoftwareLegalTechStockholm, SE
Oskar Block(Founder)inOscar Adamsson(Founder)inTobias Estreen(Founder)inPetrus Werner(Co-founder & CTO)in
Co-investorsY CombinatorAndreessen HorowitzInception Fund
Stockline provides enterprise resource planning software designed for food wholesalers that uses AI agents to automate administrative work like order entry.
AI & Machine LearningEnterprise SoftwareSaaSSan Francisco, US
Mariem Ould Ismail(Founder)inMoncef DJAFRI(Founder)in
Co-investorsKima VenturesSterling RoadTranspose Platform ManagementY Combinator20VCAliaksandr Hudzilin+7 more
Sunflower Sober operates a digital community and support group for people pursuing sobriety, enabling peer connection and shared recovery journeys.
ConsumerHealthtechMental HealthSocialSan Francisco, US
Koby Conrad(CEO & Founder)in
Co-investorsAlumni VenturesHAWKTAILLobster CapitalTranspose Platform ManagementY CombinatorBatch Ventures+8 more
Verne Robotics develops robotics technology, with a focus on multi-modal perception capabilities.
Advanced ManufacturingAI & Machine LearningDeep TechRoboticsSan Francisco, US
Neil Nie(Founder)inAditya Jha(Founder)in
Co-investorsCrucible CapitalPioneerRebellion VenturesTranspose Platform ManagementY CombinatorZAKA VC+11 more
VOYGR provides location data infrastructure and place understanding for applications requiring accurate, continuously refreshed location information.
Data & InfrastructureEnterprise SoftwareSector AgnosticSan Francisco, US
Vlad Baskakov(Founder)inYarik Markov(Founder)in
Co-investorsStreamlined VenturesTranspose Platform ManagementY CombinatorAlumni VenturesAndreessen HorowitzBatch Ventures+5 more
Zymbly is an AI copilot that assists aircraft maintenance technicians with troubleshooting, parts lookup, and documentation by searching across manuals, local procedures, and maintenance systems.
AI & Machine LearningEnterprise SoftwareLondon, GB
Ben Jacob(Founder)inRobbie Bourke(Founder)inAzmat Habibullah(Founder)in
Co-investorsfirstminute capitalY CombinatorCapitalize VCMatrixPageOne Lab, Inc.
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Exits · 2
2 acquisitionsPortfolio news
latest coverage across their companies
AgentMail · thesaasnews.com · Sep 7, 2026
Pocket · techfundingnews.com · Jun 29, 2026
Luel · thesaasnews.com · May 29, 2026
Didit · fintech.global · May 27, 2026
Stilta · finsmes.com · May 25, 2026
Autosana · ycombinator.com · Apr 21, 2026
Lua Global Inc · thesaasnews.com · Apr 20, 2026
Frequently asked questions
- How many investments has Phosphor Capital made?
- Phosphor Capital has 50 tracked investments, 2 of which have exited.
- What stage does Phosphor Capital invest at?
- Phosphor Capital invests at the Seed stage.
- What sectors does Phosphor Capital focus on?
- Phosphor Capital focuses on Advanced Manufacturing, Consumer, Enterprise Software, Fintech, Healthtech.