I need a self-hosted intranet that becomes the single doorway to every task in our organisation. Once signed in with a simple username-and-password credential, staff must be able to read, edit and collaborate on our material but never download or shift it outside the platform. Think of it as a walled garden where all documents, internal conversations and project boards live together. Core workspace • Documents, internal news posts and project boards presented in one intuitive web interface • Tight version control so every change is tracked and recoverable • Fast, indexed search across files, messages and tasks • Granular permissions that let me decide who can view, edit or comment on each item Security and access • Browser-based access only; no local file export, print or direct download routes • User accounts created and managed by us, authenticated with username and password • Clear audit trail of logins, edits and permission changes Delivery expectations • A running demo on your own environment for approval • Installation script or step-by-step guide for our on-premises server (Linux or Windows) • Source code / configuration files and concise admin manual • Final walkthrough session to ensure we can create users, set permissions and verify that data cannot leave the intranet If you already work with frameworks such as SharePoint, Nextcloud, Confluence, or a custom Node/PHP stack, feel free to suggest the best fit—the must-have is airtight in-browser containment of our files and discussions.