Rheingau Founders — Full Portfolio

Adaptyv Bio develops technologies for protein engineering that enable the design and testing of new proteins for applications in medicine, industrial enzymes, and functional materials.

AI & Machine LearningBiotechDeep TechHealthtechLausanne, CH

JEJulian Englert(Founder)inDNDaniel Nakhaee-Zadeh Gutierrez(Founder)inRKRobert KapturinGAGerard AntouninSBSam BurnsinDNDaniel Nakhaee-Zadeh(CTO)in

Co-investorsFOFoundersHAHAWKTAILHIHighland EuropeLOLong GameNENeer Venture PartnersS2S2S Ventures+11 more

Akhetonics is a deeptech company developing an all-optical photonic processor, aiming to build digital photonic computing hardware based on a non-von Neumann architecture.

Deep TechHardwareSemiconductors

LDLeonardo Del Bino(Founder)inMKMichael Kissner(Founder)inMatthias Sagerer(Founder's Associate)

Co-investorsBABayern KapitalBLBlank Space VenturesCOConstructor Capital USMAMatterwave VenturesRURuna Capital46468 Capital

Improve Digital is the supply-side (SSP) arm of Azerion's advertising business, connecting publisher ad inventory to 50+ DSPs and SSPs in real time across web, in-app, CTV, DOOH, and audio formats.

AdTechMarketing TechMedia & Entertainment

Co-investorsFJFJ LabsPOPoint Nine

Asayer (OpenReplay) offers session replay and product analytics software that lets teams record and watch how users interact with their web apps to spot friction points, errors, and drop-offs.

Data & InfrastructureDeveloper ToolsSaaSNew York, US

MOMehdi Osman(Executive Officer, Director)in

Co-investorsKIKima Ventures46468 CapitalEXExpaRURuna CapitalY Y Combinator

Authologic provides digital identity verification and KYC/AML compliance solutions for regulated businesses globally.

CybersecurityDeveloper ToolsEnterprise SoftwareFintechWarsaw, PL

JSJarek Sygitowicz(Founder)inKKKrzysztof Klimczak(Founder)inMRMarek Rogoziński(Founder)inFlorentyna Frend(Head of Product)Pamela Oldfield(Head of Marketing)OIga Medras(Head of Legal)

Co-investors7P7percent VenturesAMAmand VenturesELElma VenturesGAGaingelsIMImmeasurableMAMAVA Ventures+6 more

Billie provides B2B payment solutions, including buy-now-pay-later options such as invoice purchase (Kauf auf Rechnung), installment payments, and trade accounts, with omnichannel and cross-border integration options.

FintechSaaSNew York, US

GGGeorgina Gooley(Executive Officer, Director)inJBJason Bravman(Executive Officer, Director)inCGChristian Grobe(Founder)inASAiga Senftleben(Founder)inMKMatthias Knecht(Founder)inArtem Demchenkov(Founder)

Co-investorsDADawn CapitalGRGR CapitalPIPICUS CAPITALSPSpeedinvestCRCreandumFEFemale Founders+3 more

Booksy is a free mobile app for discovering and booking appointments with beauty and wellness service providers such as barbers, hairdressers, massage therapists, and manicurists.

ConsumerMarketplacesChicago, US

Konrad Howard(Founder)SBStefan Batory(Founder)KSKristina Salen(Executive Officer)inRBRipsy Bandourian(Executive Officer)inEMEwelina Macewicz(Executive Officer)inSDSelim Dogguy(Executive Officer)in

Co-investorsATAternusCOCoelius CapitalENEndeavor CatalystINInovia CapitalINInovo VCKAKAYA+11 more

Customer Alliance provides a guest feedback intelligence platform that enables hotels to centralize reviews, automate feedback collection, and respond to reviews with AI assistance.

AI & Machine LearningMarketing TechSaaSTravel & HospitalityBerlin, DE

Co-investorsHOHOWZAT PartnersRORound2 Capital PartnersSESenovo

Datapine was a Berlin-based business intelligence startup offering a self-service data analytics and dashboard platform that let users connect data sources and build visualizations without SQL knowledge.

Construction TechData & InfrastructureSaaS

Rene Wolf(Chief Executive Officer)in

Co-investorsVEVenista Ventures

DemoUp Cliplister runs a content syndication network and digital asset management platform that lets brands distribute product content to retail partners and lets retailers automatically source optimized PDP content.

E-commerceMarketing TechRetail Tech

Co-investorsHEHeal CapitalHEHelsana HealthInvest AG

Boam AI provides managed, AI-driven CRM data management that verifies, enriches, and continuously refreshes merchant and business data for sales, data, and AI teams at SMB and enterprise organizations.

AI & Machine LearningData & InfrastructureSaaS

Co-investorsCOCo=Creation=CapitalDODorm Room

Mozilla is a global community organization that develops and maintains open-source internet infrastructure, including the Firefox web browser and Thunderbird email client, while advocating for internet openness, privacy, and user control.

ConsumerCybersecurityDeveloper ToolsSector AgnosticSan Francisco, US

Antoine Lamielle(Founder)

Co-investorsBABattery VenturesBRBridgewater AssociatesFIFirst Round CapitalMEMello RDCONOntario Centre of Innovation programsVEVeritus Holdings+2 more

HER is a dating app designed for lesbian, bisexual, queer, nonbinary and trans people that prioritizes safety, intentional connections, and community features.

ConsumerImpact & Social GoodMarketplacesSocialSan Francisco, US

RERobyn Exton(CEO)inShawn Adams(CFO and Treasurer of HER, Inc., the manager of HER, LLC)Michael Mahon(EVP of HER, Inc., the manager of HER, LLC)Harley Rouda, Jr.(CEO & President of HER, Inc., the manager of HER, LLC)BBBrooks Burton(Executive Officer)Chanyu Xu(Founder)

Co-investors50500 GlobalINInitialized CapitalY Y CombinatorBEBetter Ventures Central LlcCACatapult CapitalDRDreamcraft+6 more

HER ONE develops dietary supplements designed for women's everyday wellness and preventive health, focusing on holistic care and closing gaps in women's healthcare.

ConsumerDirect to ConsumerE-commerceFemTechWellness & Fitness

CXChanyu Xu(Founder)in

Co-investorsFIFive Seasons Ventures

TELUS Health Engage (Humanoo) is a corporate wellbeing platform that offers employees guided programs in fitness, mindfulness, and nutrition alongside coaching, challenges, and community features.

Digital HealthHR TechWellness & Fitness

Co-investorsCRCreathor VenturesDVDvH VenturesHEHelsana HealthInvest AGRORocket Internet SEVEVerve Ventures

Humly offers space booking and desk sharing solutions, including booking devices for managing workspace reservations.

Future of WorkPropTechSaaS

Co-investorsVIViking GrowthALAlfvén & DidriksonVIViking Venture

Itembase provides an Integration Platform as a Service (iPaaS) that enables businesses to integrate with eCommerce platforms and merchants across various industries and organizational roles.

Cloud ComputingE-commerceEnterprise SoftwareRetail TechSaaS

Co-investorsSTStanford University

Jutro Medical operates primary care clinics (POZ) in Poland offering telemedicine and in-person visits under the public NFZ system, with an app for booking appointments and accessing prescriptions, test results, and recommendations.

Digital HealthHealthtechWellness & Fitness

AJAdam Janczewski(Founder)in

Co-investorsINInovo VCKAKAYAKOKogito VenturesMAMarket One CapitalNAnaturalX Health VenturesWAWarsaw Equity Group+5 more

Platform connecting construction companies and freight forwarders to optimize supply chain logistics and truck utilization on construction projects.

Lengoo was a Berlin-based B2B startup offering AI-powered machine translation software that trained custom models on each enterprise client's own language data, combined with professional human linguists.

Berlin, DE

Co-investorsCRCreathor VenturesHOHOWZAT PartnersINInkefPOPolipo VenturesTETechstarsPIPiton Capital LLP+1 more

LINDERA offers an AI-supported mobility-analysis app that lets patients record their movement by video to assess and reduce fall risk, with tools like L.Gait providing gait parameters for physicians and therapists.

AI & Machine LearningDigital HealthHealthtechBerlin, DE

DHDiana Heinrichs(Founder)in

MieterEngel connects tenants in Germany with a network of partner lawyers who provide online legal advice on rental and tenancy issues, typically within 48 hours.

LegalTechMarketplaces

CKChristian Kahl(Founder)inETElizabeth Teutenberg(Founder)in

MOLEQLAR produces high-purity methyleneblue solution in pharmaceutical-grade quality for scientific and technical applications.

BiotechConsumerDeep TechHealthtechLongevityNew MaterialsWellness & Fitness

Montredo is an online luxury watch retailer that sources timepieces from authorised dealers and direct manufacturer partnerships, offering pre-owned and new watches with authenticity guarantees and transparent pricing.

B2B MarketplacesConsumerE-commerceMarketplacesBerlin, DE

Co-investorsTITiburon

Piotr Niedzwiedz(Founder)

Co-investorsTDTDJ Pitango VenturesALAlmaz Capital

NetBird provides a network and cybersecurity platform designed to make secure private networking affordable and accessible to companies of all sizes.

Cloud ComputingCybersecurityDeveloper ToolsEnterprise Software

Co-investorsANAntlerINInreach VenturesNANauta Capital

OpenReplay is a session replay and product analytics platform that enables product teams to record user interactions with web applications, identify friction points, and troubleshoot issues.

Data & InfrastructureDeveloper ToolsEnterprise SoftwareSaaSNew York City, US

MOMehdi Osman(CEO)in

Co-investorsEXExpaRURuna CapitalY Y Combinator46468 Capital

Optidash provides AI-powered image optimization and processing technology for developers and content creators through a REST API and web interface.

AI & Machine LearningDeveloper ToolsSaaSBerlin, DE

OptioPay offers plug-and-play solutions that let companies reward their existing customers for sharing data and engaging with data-driven, personalized deals.

FintechMarketing TechSaaS

Marcus Börner(Founder & Executive Chairman)in

Co-investorsDVDvH VenturesLELeadX Capital PartnersSESeed X

ProvenExpert.com is an online review and ratings aggregation platform that helps businesses and freelancers collect and showcase customer feedback to attract new customers and increase revenue.

ConsumerMarketing TechRetail TechSaaSSales TechBerlin, DE

RFRemo Fyda(CEO)inKlaus(CPO)Alexander(CTO)Sven(CFO)

Co-investorsBEBellevue Investments & Co

Qualifyze offers a centralized audit management platform for life sciences supply chains, letting quality and procurement teams plan, execute, and track supplier GxP audits globally with integrated CAPA tracking.

AI & Machine LearningBiotechEnterprise SoftwareHealthtechSaaS

David Schneider(Founder)Florian Hildebrand(Founder)

Co-investorsAUAuxxoCHCherry VenturesCOCompanion M Gmb HCOcoparionHEHeartfelt CapitalHEHEARTFELT_+4 more

Remerge operates a mobile demand-side platform (DSP) focused on in-app retargeting and advertising, helping brands reach and re-engage users within mobile apps.

AdTechMarketing TechSaaSBerlin, DE

Co-investorsGEGerman Startups GroupPOPoint NineBUBurda Principal InvestmentsWEWestTech Ventures

Simplesurance is an embedded insurance technology provider that delivers insurance products through B2B and B2C solutions across industries including banking, automotive, e-commerce, travel, and cybersecurity.

Enterprise SoftwareFintechInsurTechSaaSBerlin, DE

RVRobin von Hein(Managing Director, Founder)inJVJoachim von Bonin(Managing Director Finance, Co-Founder)in

Co-investorsALAllianz XCOConny & Co.GEGerman Startups GroupLALA ROCA CapitalRARakuten CapitalRORoute 66 Ventures+2 more

Solvemed develops a smartphone-based FDA-cleared medical device for pupil size and reactivity testing in neurological exams, eliminating the need for separate hardware.

AI & Machine LearningHealthtechMedical Devices

MWMichal Wlodarski, PhD(Founder)inHCHugo Chrost(Founder)in

Co-investorsAPAPEX VenturesCACambridge Angels groupFFFf Venture CapitalPRPreface VenturesSUSunfish PartnersSUSunfish Partners+2 more

Urban Sports Club offers a flexible membership giving access to fitness studios and over 50 sports and wellness activities across Europe, bookable via its app for in-person, free-training, or live online sessions.

MarketplacesSports TechWellness & Fitness

Moritz Kreppel(Founder)inBRBenjamin Roth(Founder)in

Co-investorsB2b2ventureCLClaret Capital PartnersINInkefPAPartech VenturesPEPeakRTRTP Global+3 more

Volders helps users understand and exercise their consumer rights through contract cancellation and management services under multiple brand names.

ConsumerLegalTechSaaS

Co-investorsFEFelix JahnHOHOWZAT Partners

Wendero is a consulting firm combining strategy consulting with venture building, helping companies design and execute their business transformation.

Enterprise SoftwareFuture of WorkBerlin, DE

LOLars O. Lüke(Managing Partner)Finn Rieder(Managing Partner)