| Opensuse | Opensuse | 1454 |
| Netapp | Oncommand Insight | 910 |
| Microsoft | Office | 834 |
| Netapp | Oncommand Workflow Automation | 698 |
| Opera | Opera Browser | 282 |
| Openssl | Openssl | 246 |
| Redhat | Openshift Container Platform | 231 |
| Redhat | Openstack | 210 |
| Microsoft | Office Compatibility Pack | 206 |
| Oracle | Outside In Technology | 195 |
| Openbsd | Openbsd | 178 |
| Netapp | Oncommand Unified Manager | 168 |
| Netapp | Ontap Select Deploy Administration Utility | 157 |
| Owncloud | Owncloud | 154 |
| Open-Xchange | Open-Xchange Appsuite | 151 |
| Microsoft | Office Long Term Servicing Channel | 145 |
| Redhat | Openshift | 145 |
| Otrs | Otrs | 133 |
| Open-Emr | Openemr | 128 |
| Microsoft | Office Online Server | 114 |
| Openbsd | Openssh | 114 |
| Sun | Opensolaris | 113 |
| Microsoft | Outlook | 110 |
| Microsoft | Office Web Apps | 106 |
| Microsoft | Office 365 Proplus | 88 |
| Otfcc Project | Otfcc | 88 |
| Netapp | Oncommand Balance | 82 |
| Microsoft | Open Xml File Format Converter | 80 |
| Hp | Openview Network Node Manager | 80 |
| Oracle | Openjdk | 78 |
| Uclouvain | Openjpeg | 77 |
| Oscommerce | Oscommerce | 75 |
| Microsoft | Office Web Apps Server | 74 |
| Netapp | Oncommand Performance Manager | 72 |
| Trendmicro | Officescan | 71 |
| Os4Ed | Opensis | 65 |
| Netapp | Oncommand Shift | 63 |
| Openldap | Openldap | 59 |
| Dell | Optiplex 7080 Firmware | 58 |
| Dell | Optiplex 3080 Firmware | 58 |
| Dell | Optiplex 5080 Firmware | 56 |
| Octopus | Octopus Server | 53 |
| Apache | Openoffice | 53 |
| Oracle | Oracle9I | 52 |
| Odoo | Odoo | 51 |
| Dell | Optiplex 7480 All-In-One Firmware | 51 |
| Dell | Optiplex 7060 Firmware | 51 |
| Sco | Openserver | 51 |
| Openatom | Openharmony | 50 |
| Dell | Optiplex 5060 Firmware | 50 |
| Dell | Optiplex 3060 Firmware | 50 |
| Dell | Optiplex 5050 Firmware | 50 |
| Dell | Optiplex Xe3 Firmware | 50 |
| Dell | Optiplex 7070 Firmware | 50 |
| Dell | Optiplex 3050 Firmware | 50 |
| Openexr | Openexr | 49 |
| Dell | Optiplex 5070 Firmware | 49 |
| Apache | Ofbiz | 49 |
| Dell | Optiplex 3070 Firmware | 49 |
| Solarwinds | Orion Platform | 49 |
| Oracle | One-To-One Fulfillment | 49 |
| Dell | Optiplex 7450 Firmware | 48 |
| Dell | Optiplex 7050 Firmware | 48 |
| Dell | Optiplex 3090 Firmware | 47 |
| Octobercms | October | 47 |
| Dell | Optiplex 7071 Firmware | 47 |
| Dell | Optiplex 5480 All-In-One Firmware | 47 |
| Oracle | Oracle8I | 46 |
| Open-Xchange | Ox App Suite | 45 |
| Microsoft | Outlook Express | 44 |
| Microsoft | Office Word Viewer | 44 |
| Openwrt | Openwrt | 44 |
| Dell | Optiplex 5260 All-In-One Firmware | 44 |
| Dell | Optiplex 7470 All-In-One Firmware | 44 |
| Dell | Optiplex 7070 Ultra Firmware | 43 |
| Dell | Optiplex 3280 All-In-One Firmware | 43 |
| Dell | Optiplex 7780 All-In-One Firmware | 43 |
| Opensc Project | Opensc | 41 |
| Dell | Optiplex 5250 Firmware | 40 |
| Dell | Optiplex 7490 All-In-One Firmware | 40 |
| Dell | Optiplex 3000 Thin Client Firmware | 39 |
| Dell | Optiplex 7090 Ultra Firmware | 38 |
| Dell | Optiplex 3000 Firmware | 38 |
| Dell | Optiplex 5000 Firmware | 38 |
| Dell | Optiplex 5090 Firmware | 38 |
| Dell | Optiplex 7000 Firmware | 38 |
| Dell | Optiplex 7090 Firmware | 37 |
| Redhat | Openstack Platform | 36 |
| Dell | Optiplex 5270 All-In-One Firmware | 36 |
| Dell | Optiplex 7770 All-In-One Firmware | 36 |
| Campcodes | Online College Library System | 36 |
| Dell | Optiplex 5400 Firmware | 36 |
| Dell | Optiplex 3090 Ultra Firmware | 36 |
| Dell | Optiplex 7400 Firmware | 36 |
| Dell | Optiplex 7000 Oem Firmware | 35 |
| Dell | Optiplex 5490 All-In-One Firmware | 35 |
| Igniterealtime | Openfire | 35 |
| Opencv | Opencv | 34 |
| Suse | Openstack Cloud | 34 |
| Openvpn | Openvpn | 33 |
