Companies — O
- O'Clock 2
- OCEA 2
- OCELL 2
- OCTA 2
- OCTIME 2
- ODEEO 2
- OKAN 3
- OKAPI:Orbits 4
- OLIX 4
- OLTA 3
- OMETRIA 3
- ONA 2
- ONDA 2
- ONDO 2
- ONE MEDIA 2
- ONE MOMENT 2
- ONE PERCENT NUTRITION 2
- ONE.FIVE 4
- ONEKEY 2
- ONI 2
- ONNURISTORE 2
- ONWARD 2
- OOKUMA DIAMOND DEVICE 3
- OP.GG 4
- OPEN8 Inc. 3
- OPENLOGI 2
- OPENSURVEY 2
- OPERe Co., Ltd. 2
- OPTIMIND 2
- OPTIML 2
- OPTMASS 2
- ORA 3
- ORCA Computing 4
- ORGANOID SCIENCES 5
- OSSTEC 2
- OTETSUTABI 2
- OTO 6
- OUTFITTERY 4
- OX Security 2
- OXOpolitics 2
- OY! 3
- Oasis 2
- Oasis Labs 3
- Oatly 3
- Obligo 3
- Ocean 2
- Ocean Ledger 2
- Ocean Protocol 2
- Oceanic Constellations 3
- Ochre Bio 4
- OctaiPipe 4
- Octave 2
- Octeract 2
- Odaseva 2
- Oddle 2
- Odeko 2
- Odo 2
- Odoo 3
- Odore 2
- Offroad 3
- Ofload 3
- Ogram 2
- Ohana 2
- OhmniLabs 2
- Ohora 3
- Okapi 3
- Okarito 2
- Oligo Security 2
- Omaha Insight 2
- Omegga 2
- Omi 3
- Omie & Cie 2
- Omio 2
- Omnea 2
- Omni 2
- Omni:us 5
- Omnidoc 2
- Omniful 3
- Omnigreen 2
- Omnio 2
- Omnipresent 3
- Omnistream 2
- OnDevice 2
- OnTruck 6
- Onavo 2
- Once 2
- Onconic Therapeutics 2
- Oncoshot 2
- Oncosoft 2
- One Data 2
- OneDay 4
- OneFootball 2
- OneShot 2
- OneStep 3
- Onedot 2
- Onepredict 3
- Onfido 7
- Onfire 2
- Onibi 3
- Onomondo 2
- Onthelook 2
- Ontik 2
- Opal 2
- Open Cosmos 3
- Open Edge Technology 2
- Open Hydro 2
- OpenHealth Technologies 2
- OpenIO 2
- OpenLayer 2
- OpenLegacy 3
- OpenPlan 2
- OpenSignal 3
- OpenTrade 2
- OpenUB 2
- OpenWeb 2
- OpenX 2
- OpenZeppelin 2
- Operations1 2
- Ophelos 2
- Opinary 2
- Oplit 3
- Opn 4
- Opontia 2
- OpsMill 3
- Opsydia 2
- OptQC 2
- Optalysys 2
- Opteran 4
- Opti 3
- Optimal 3
- Optimoroute 2
- Optimum 2
- Optimuse 2
- Oradian 2
- Orakl 2
- Orami 2
- Orange Inc 2
- OrangeWood 2
- Orbex 4
- Orbillion 2
- Orbit Discovery 2
- Orbital 4
- Order 2
- OrderYOYO 3
- Orderbird 2
- Ordio 2
- OrganOx 2
- Organise 3
- Ori Biotech 2
- Origami 2
- Origin 2
- Origin 2
- Ornikar 3
- OroraTech 2
- Orum Therapeutics 4
- Orus 4
- Orus Energy 3
- Ory Laboratory Co., Ltd. 2
- Osaro 2
- Osome 3
- Ossprey 2
- Otera 2
- Otonomo 4
- Otoqi 2
- Ottonova 4
- Ouch 3
- OuiHelp 2
- OutThink 2
- Outfunnel 2
- Outmin 2
- Outside Voice 2
- Outverse 3
- Overtime 3
- Overture 2
- Overwatch 2
- Overworld 2
- Oviva 3
- Ovo Labs 3
- Ovom 2
- Owkin 2
- OwnHome 2
- Oxa 2
- Oxford Brain Diagnostics 3
- Oxford Endovascular 2
- Oxford Flow 3
- Oxford Nanopore Technologies 3
- Oxford Quantum Circuits 3
- Oxford Space Systems 4
- Oxsensis 2
- Oxyle 3
- ookami 2