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

Julian Englert(Founder)inDaniel Nakhaee-Zadeh Gutierrez(Founder)inRobert KapturGerard AntounSam Burns

Co-investorsHAWKTAILNeer Venture PartnersUnruly CapitalY CombinatorACE & CompanyAxial VC+2 more

Akhetonics develops all-optical computing hardware based on photonic integrated circuits that generate nonlinear optical operations, enabling optical logic gates, analog mathematical operations, optical memory, and quantum feed-forward.

Deep TechHardwareSemiconductors

Leonardo Del Bino(Founder)inMichael Kissner(Founder)in

Co-investorsMatterwave VenturesRuna Capital468 CapitalBayern Kapital

Co-investorsFJ LabsPoint 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

Mehdi Osman(Executive Officer, Director)

Co-investorsKima Ventures468 CapitalExpaRuna Capital

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

CybersecurityDeveloper ToolsEnterprise SoftwareFintechWarsaw, PL

Jarek Sygitowicz(Founder)inKrzysztof Klimczak(Founder)inMarek Rogoziński(Founder)in

Co-investors7percent VenturesImmeasurableOpenOceanPeakY Combinator

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

Georgina Gooley(Executive Officer, Director)Jason Bravman(Executive Officer, Director)Christian Grobe(Founder)inDr. Matthias Knecht(Founder)Aiga Senftleben(Co-Founder, Managing Director & General Counsel)inMatthias Knecht(Co-Founder & Co-CEO)in

Co-investorsDawn CapitalGR CapitalPICUS CAPITALCreandumRocket Internet SESilverton Partners+1 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(Executive Officer)Stefan Batory(Founder & CEO)Kristina Salen(Executive Officer)Ripsy Bandourian(Executive Officer)Ewelina Macewicz(Executive Officer)Selim Dogguy(Executive Officer)

Co-investorsAternusCoelius CapitalEndeavor CatalystInovia CapitalInovo VCKAYA+8 more

Customer Alliance is a guest feedback intelligence platform for hotels that centralizes reviews and surveys, enables teams to respond to guest feedback across major portals with an AI reply assistant, and tracks satisfaction metrics like CSAT and NPS.

Marketing TechSaaSTravel & Hospitality

Co-investorsRound2 Capital PartnersSenovo

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

Co-investorsVenista 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-investorsHeal Capital

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-investorsCo=Creation=CapitalDorm Room

San Francisco, US

Co-investorsBattery VenturesBridgewater AssociatesFirst Round CapitalMello RDCOntario Centre of Innovation programsVeritus Holdings

HER ONE produces dietary supplements formulated for women's specific nutritional needs, offering products such as collagen, creatine, and all-in-one beauty supplements in various flavors.

Direct to ConsumerFemTechWellness & Fitness

Chanyu Xu(Founder)

Co-investorsFive 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-investorsCreathor VenturesRocket Internet SEVerve Ventures

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

Future of WorkPropTechSaaS

Co-investorsAlfvén & DidriksonViking Venture

Itembase offers an integration platform (iPaaS) that lets eCommerce app providers build and launch pre-built integrations across 500-700+ commerce systems to reach and onboard merchants.

E-commerceRetail TechSaaS

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

Adam Janczewski(Founder)in

Co-investorsInovo VCKAYAKogito VenturesMarket One CapitalnaturalX Health VenturesWarsaw Equity Group+4 more

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

Co-investorsCreathor VenturesPolipo VenturesInkef

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

Diana Heinrichs(Founder)

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

MOLEQLAR sells longevity-focused dietary supplements (vitamins, minerals, micronutrients) alongside lab diagnostics such as biological age and micronutrient tests, developed with physicians and based on the Hallmarks of Aging.

ConsumerLongevityWellness & Fitness

MONTREDO is an online platform for buying new and certified pre-owned luxury watches, offering authenticated timepieces with manufacturer or MONTREDO warranties, insured shipping, and a 14-day return policy.

ConsumerE-commerceMarketplaces

Co-investorsTDJ Pitango VenturesAlmaz 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-investorsInreach VenturesNauta CapitalAntler

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

Mehdi Osman(Founder)in

Co-investorsExpaRuna CapitalY Combinator468 Capital

Optidash is an image processing and optimization API that lets developers integrate image handling into their applications, with usage reporting, audit logs, and team access controls.

AI & Machine LearningDeveloper ToolsSaaS

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)

Co-investorsDvH VenturesLeadX Capital Partners

ProvenExpert is a platform for collecting and displaying customer reviews, offering industry-specific surveys, review seals, and SEO-optimized profiles that surface Google star ratings.

Marketing TechSaaSSales Tech

Co-investorsVerve Ventures

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-investorsGerman Startups GroupPoint NineWestTech Ventures

Simplesurance develops technology that enables businesses to embed insurance products into their offerings.

FintechInsurTechSaaS

Co-investorsAllianz XGerman Startups GroupLA ROCA CapitalRoute 66 VenturesTempoCapODDO BHF+1 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)inBenjamin Roth(Founder)in

Co-investorsb2ventureClaret Capital PartnersPeakRTP GlobalSevenVenturesHV Capital+2 more

Volders provides an online service for canceling contracts, offering thousands of legally valid cancellation templates with provider address details and electronic signature support.

ConsumerLegalTechSaaS

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

Enterprise SoftwareFuture of Work