| Open Projects Network | Open Projects Network Ircd | 1 |
| Dokeos | Open Source Learning And Knowledge Management Tool | 6 |
| Open Source Real-estate Script Project | Open Source Real-estate Script | 1 |
| Alienvault | Open Source Security Information And Event Management | 5 |
| Opensource-socialnetwork | Open Source Social Network | 7 |
| Axelor | Open Suite | 1 |
| Sco | Open Unix | 5 |
| Openwebanalytics | Open Web Analytics | 7 |
| Open Webmail | Open Webmail | 6 |
| Open-audit | Open-audit | 22 |
| Opmantek | Open-audit | 22 |
| HackerOne | Open-device Node Module | 1 |
| Open-xchange | Open-xchange Appsuite | 151 |
| Open62541 | Open62541 | 2 |
| Eduserv | Openathens Service Provider | 1 |
| Openbb | Openbb | 5 |
| Open-blog | Openblog | 1 |
| Openbrowser Project | Openbrowser | 1 |
| Openclinic Project | Openclinic | 16 |
| Infradead | Openconnect | 10 |
| HackerOne | Opencv.js Node Module | 1 |
| Linuxfoundation | Opendaylight | 14 |
| Openengine | Openengine | 4 |
| Openevidence | Openevidence | 2 |
| Openexif Project | Openexif | 5 |
| N/a | Openexr | 51 |
| Apperta | Openeye | 1 |
| Opengear | Opengear | 1 |
| Openh323 Project | Openh323 | 1 |
| Openi-cms Group | Openi-cms | 2 |
| Openiam | Openiam | 5 |
| Drupal | Openid | 20 |
| N/a | Openid | 20 |
| Openid | Openid4java | 1 |
| Oracle | Openjdk | 99 |
| The OpenJPEG Project | Openjpeg | 2 |
| N/a | Openjpeg | 78 |
| N/a | Openjpeg2 | 3 |
| Openkm | Openkm | 14 |
| Caldera | Openlinux Desktop | 3 |
| Caldera | Openlinux Ebuilder | 3 |
| Caldera | Openlinux Edesktop | 8 |
| Caldera | Openlinux Server | 9 |
| Caldera | Openlinux Workstation | 9 |
| Dell | Openmanage | 1 |
| Openmedia | Openmedia | 1 |
| Openmptcprouter | Openmptcprouter | 1 |
| Openmrs | Openmrs-core | 1 |
| OpenMRS | Openmrs-module-referenceapplication | 2 |
| Openntpd | Openntpd | 1 |
| Rcdevs | Openotp Token | 1 |
| Openpegasus | Openpegasus Wbem | 2 |
| Openpgp | Openpgp | 2 |
| Openplcproject | Openplc | 1 |
| Tejimaya | Openpne | 4 |
| Openrc Project | Openrc | 2 |
| Shibboleth | Opensaml | 5 |
| Shibboleth; Opensaml Java | Opensaml Java | 2 |
| Unify | Openscape Desk Phone Ip 35g Eco Hfa | 1 |
| Unify | Openscape Desk Phone Ip 35g Eco Sip | 1 |
| Unify | Openscape Desk Phone Ip 35g Eco Sip Firmware | 1 |
| Unify | Openscape Desk Phone Ip 35g Hfa | 1 |
| Unify | Openscape Desk Phone Ip 35g Hfa Firmware | 1 |
| Unify | Openscape Desk Phone Ip 35g Sip | 1 |
| Unify | Openscape Desk Phone Ip 35g Sip Firmware | 1 |
| Unify | Openscape Desk Phone Ip 55g Hfa | 1 |
| Unify | Openscape Desk Phone Ip 55g Hfa Firmware | 1 |
| Unify | Openscape Desk Phone Ip 55g Sip | 1 |
| Unify | Openscape Desk Phone Ip 55g Sip Firmware | 1 |
| Xinuos | Openserver | 60 |
| N/a | Openshift | 184 |
| Red Hat, Inc. | Openshift | 184 |
| Redhat | Openshift | 184 |
| Redhat | Openshift Api Management | 1 |
| Red Hat | Openshift Container Platform | 232 |
| Redhat | Openshift Container Platform | 233 |
| Redhat | Openshift Container Platform For Power | 3 |
| Redhat | Openshift Container Platform Ibm Z Systems | 2 |
| Openshift Haproxy Cartridge | Openshift Haproxy Cartridge | 1 |
| Red Hat | Openshift-ansible | 3 |
| Openshift | Openshift/openshift-apiserver | 2 |
| N/a | Openshift/ovn-kubernetes | 1 |
| Openslp-dfsg | Openslp-dfsg | 1 |
| Openbsd | Opensmtpd | 8 |
| Opensourceclassifieds | Opensourceclassifieds | 1 |
| Openssl | Openssl | 265 |
| Openssl Software Foundation | Openssl | 264 |
| The Openssl Project | Openssl | 264 |
| HackerOne | Openssl.js Node Module | 1 |
| N/a | Openstack | 1 |
| Opensuse | Openstack Cloud | 35 |
| OpenStack Foundation | Openstack-cinder | 2 |
| Openstack-utils | Openstack-db Program | 1 |
| Red Hat | Openstack-heat | 2 |
| [unknown] | Openstack-mistral | 4 |
| Red Hat | Openstack-neutron | 5 |
| The Openstack Project | Openstack-neutron | 5 |
| [UNKNOWN] | Openstack-octavia | 1 |
| [UNKNOWN] | Openstack-tripleo-heat-templates | 2 |
| Unify | Openstage 15 | 3 |
