Companies
Every company that appears in at least one list, A–Z.
OKXCryptocurrency exchangeIn 1 list- Olam GroupSingapore agri-commodity and food-ingredients groupIn 2 lists
OlarkLong-running live chat tool with an optional AI website…In 1 list
Omega HealthcareGlobal RCM and health data operator with 36,000+ staffIn 2 lists
Omnicom GroupNew York-based group that absorbed Interpublic in November 2025In 1 list
OmniGraffleNative Mac and iPad diagramming with perpetual licencesIn 1 list
Omniscient DigitalOrganic growth agency for B2B tech founded by former…In 1 list
OmnisendEmail, SMS and push marketing built for ecommerceIn 4 lists
OMV PetromFuel distribution arm of OMV PetromIn 1 list- ON24Enterprise webinar and engagement-data platform, owned by Cvent since…In 2 lists
OnBoardBoard portal used by 30,000+ boards, with OnBoard AIIn 1 list- OndatoIdentity and business onboarding platform with a published KYB…In 1 list
ONE (Ocean Network Express)Singapore-flagged carrier with the highest chartered share in the…In 1 list
OneflowSwedish contract and proposal platform with editable, data-driven documentsIn 1 list- OneLoginWorkforce identity platform with SmartFactor risk-based authenticationIn 1 list
- OneSpanIdentity-focused e-signature for banks and governmentIn 2 lists
- OneTrustPrivacy-led governance platform with a tech risk and compliance…In 2 lists
OnfleetDelivery management with real-time AI route optimisationIn 2 lists
OntinueZürich-founded Microsoft-focused MXDR provider with 250+ staffIn 1 list
Onward TechnologiesEngineering R&D services for industrial manufacturersIn 1 list
Ooma OfficeSmall-business VoIP with no-contract plansIn 2 lists- Open DentalHighly customisable PMS with a published flat support feeIn 1 list
OpenAIDeveloper of ChatGPT and the GPT modelsIn 2 lists
OpenAI WhisperOpen-source OCR engine first built at HP, later developed…In 5 lists
OpenText DocumentumHigh-volume regulated content managementIn 1 list- OpenVPN CloudConnexa and Access ServerSelf-hosted and cloud VPN from the company behind the…In 1 list
OpenZeppelinSmart contract library maintainer and security auditorIn 1 list
OperatixSDR outsourcing specialist for B2B software vendors in 22…In 1 list
OPNsense (Deciso DEC750)Open-source firewall with official Dutch-built appliancesIn 1 list
Optimizely Configured CommerceCDP powering Optimizely's experimentation, content and commerce toolsIn 4 lists
OptimoRoutePer-driver route and schedule optimisation for delivery and field…In 1 list
Optio IncentivesNorwegian share plan platform from start-up to listed companyIn 1 list
OptivUS cybersecurity advisory, integration and managed services firm with…In 2 lists
Optro (formerly AuditBoard)Audit, risk, infosec and compliance platform owned by Hg;…In 2 lists
Opus Virtual OfficesUS provider bundling address, phone answering and mail in…In 1 list- OracleFast-growing hyperscaler with 50+ regions and an Always Free…In 14 lists
- Oracle NetSuiteCloud ERP with multi-tier assembly planning for growing manufacturersIn 4 lists
- OrangeFrench incumbent operatorIn 1 list
Orange CyberdefenseOrange group's cybersecurity services subsidiary; largest disclosed cyber services…In 1 list
Orange LogicHighly configurable enterprise DAM founded in 1998In 1 list
OrbUsage-based billing engine for AI and infrastructure companiesIn 1 list
OrdoroShipping, inventory and dropship apps for e-commerce merchantsIn 2 lists
Orient TechnologiesMumbai infrastructure and managed services providerIn 1 list
Origin EnergyEnergy retail, generation and LNGIn 1 list- OrlenPolish refining, petrochemical, gas and power groupIn 1 list
- OrrickGlobal firm with a technology and innovation sector and…In 1 list
OryxDentist-founded cloud PMS with published tiersIn 1 list- OSB Group PLCListed specialist lenderIn 1 list