B2B Marketplaces Startups

OneAM offers an invoice/receivables financing ("early pay") platform that connects SMBs and founders selling receivables with institutional investors so they can access cash on outstanding invoices instead of waiting 30 to 90 days. It positions itself as a faster, transparent alternative to traditional factoring, using modern infrastructure and quantitative risk assessment.

1 investor

OneDome is an online platform that simplifies residential property transactions in the UK by integrating property search, estate agent engagement, conveyancing, mortgage brokerage, and title registration into a single service. The platform serves home buyers, sellers, and property professionals, and includes buyer protection covering professional fees up to £2,250 if transactions fail.

1 investor

OneStockHome is an online marketplace for construction materials and building supplies, offering products such as steel, cement, pipes, electrical systems, bricks, roofing materials, concrete, metal sheets, and tools to construction professionals and homeowners.

1 investor

OnFrontiers connects federal contractors and development organizations with vetted experts who have government sector experience, streamlining access to subject-matter expertise for proposal, capture, and delivery work. The platform also integrates AI workflows to embed expert knowledge into team processes.

1 investor

OnlySky provides an integrated ERP and e-commerce platform that digitizes ski school operations and lift ticket sales for independent ski resorts. The platform consolidates instruction, rentals, and ticketing management in one system for resort operators.

1 investor

Onventis provides a cloud-based procurement suite that helps midsize enterprises automate purchasing and finance processes to achieve cost control and efficiency. The platform connects buyers and suppliers through a globally connected network and supports purchasing managers, CFOs, and suppliers.

1 investor

Ooooby is an online platform that enables local food producers and artisanal businesses to build and operate e-commerce storefronts with integrated fulfillment and delivery management tools. The platform serves small-scale food businesses, farmers, and local producers seeking to sell fresh produce and handmade goods directly to customers online.

1 investor

Open Assembly is a platform for open talent and workforce innovation. The company connects organizations with distributed talent networks and explores new models of work organization.

1 investor

OpenCommerce Group operates a platform and ecosystem for cross-border e-commerce, helping merchants and entrepreneurs launch and scale businesses globally. The company serves over 130,000 stores across 195 countries, with a focus on major markets including the US and China.

1 investor

OpenDate provides technology solutions for the live music market, serving independent venues and promoters with tools designed to replace outdated systems in event management.

1 investor

OPENLANE operates a US online marketplace for wholesale used vehicles, connecting dealers as buyers and sellers through 24/7 listings and scheduled live auctions. It provides AI-assisted vehicle condition reports, including damage detection, engine audio analysis, and OBD2 code translations, along with search filters and competitive buy fees.

1 investor

OpenMarkets provides a platform that streamlines the purchase and sale of medical equipment for healthcare providers and suppliers through connected workflows and direct supplier access. The company serves healthcare organizations seeking to improve efficiency and reduce costs in equipment procurement and disposition.

1 investor

A service that recruits customers seeking orthodontic braces through social media and refers them to dental clinics. It operates across multiple prefectures in Japan, serving orthodontic dental clinics.

1 investor

OpTuNE is a software platform that helps musicians and artists manage bookings, finances, contracts, and team collaboration in one place. The platform also provides promotional tools and integrations to connect artists with bookers and venues.

1 investor

Orbit is a marketplace and services database for the circular construction sector that connects buyers and sellers of salvaged, refurbished, and surplus construction materials, while also facilitating connections to specialized service providers. The platform aims to reduce construction and demolition waste, support material reuse, and grow the green economy in the US and Canada.

1 investor

Upstock is an online ordering platform connecting wholesale buyers (such as restaurants, cafes, and supermarkets) with their suppliers, letting buyers order from supplier catalogues at negotiated prices and track deliveries across locations. It automates invoicing and order management through integrations with accounting tools, serving hospitality operations, brands, and 3PL providers.

1 investor

OrderCircle is a cloud-based order management platform designed for B2B e-commerce businesses and wholesale sellers. The platform enables wholesale businesses to streamline order processing, payment handling, invoicing, and customer communication through a centralized online portal.

1 investor

ORDRE Group develops B2B technology platforms for the luxury fashion industry, including virtual showrooms and authentication solutions using AI and vision technology. The company serves luxury design houses, retailers, and brands to facilitate product discovery and verification in the fashion supply chain.

1 investor

Oriente is a fintech company providing mobile-first financial infrastructure and identity-based solutions for underserved consumers, small businesses, and merchants across Asia's fastest-growing economies. The company combines proprietary technology with partnerships to enable financial access and economic opportunity in emerging markets.

1 investor

OTC Industrial Technologies is a one-stop industrial and manufacturing solutions supplier serving diverse industries across the United States. The company provides tailored products, services, and expert support through a network of 40 owned brands and 60 branch locations to optimize manufacturing operations and uptime.

1 investor

Ourboro is a real estate investment platform that offers shared equity co-ownership in owner-occupied residential homes across Ontario, Canada, enabling Canadian families to purchase homes while providing investors with mortgage-leveraged returns without landlord or property management obligations. The firm targets pension funds, family offices, and private investors seeking stable, downside-protected residential real estate exposure.

1 investor

OurSupport is a technology services platform that connects businesses and teams with vetted local IT technicians for remote or on-site support, offered as pay-per-fix, subscription, or managed runbook-execution models across local and international markets. Through its group it also delivers infrastructure, hardware distribution, and field services, including banking automation and ATM support via its Portuguese subsidiary Cronotecnica.

1 investor

Outlast is a platform that optimizes waste collection and recycling operations for waste management companies, helping them maximize margins and operational efficiency.

1 investor

OurHouse operates membership-based clubs (Houses) designed for children and parents, offering spaces where children can play freely and parents can relax without judgment. The company serves families seeking affordable, welcoming alternatives to traditional childcare and structured activities.

1 investor