Nuxeo and Alfresco are two CSP platforms (previously ECM)
Both are Open Source and OSGI based platforms.
Gladtek creates bundles and plugins that are fully compatibles to these platforms in order to enhance your Content Services experience whether it is in Frontend UI or in behaviour, rules and documents access.
Gladtek makes also connectors and webhooks so that your platform synchronizes with other softwares
Jahia DXP is a Digital Experience Platform centered on CMS capabilities.
The platform is fully extensible.
Gladtek creates full websites or business core bundles making you experience Enterprise applications enhanced to your business needs.
Odoo is both an ERP and CRM solution. It is an open source project extensible to make plugin creation and integration easy