I’m looking for a straightforward, cloud-hosted space where my team can upload, store, and exchange documents without exposing anything publicly. Every file must stay invisible unless the owner explicitly grants access to selected users, and authentication will rely solely on a classic email-and-password workflow. Core needs • Smooth upload/download of PDFs, DOCX, XLSX, PPT, and similar formats • Invite-only sharing—no public links; only the people I name can see or retrieve a file or folder • Responsive web interface that works just as well on a phone as on a laptop • Password reset, change-password, and basic profile management built in • Admin view to track users, review storage consumption, and revoke or grant access instantly Tech guidance I’m open to popular stacks—Laravel, Django, Node/Express, or an equivalent—backed by object storage such as Amazon S3, Google Cloud Storage, Azure Blob, or another vendor you prefer. Containerised deployment (Docker, docker-compose, or similar) is ideal so I can spin it up on my own VPS or cloud account with minimal fuss. Deliverables 1. Working web application deployed on a test URL 2. Source code with clear README covering setup, environment variables, and build steps 3. SQL/NoSQL schema scripts (if applicable) 4. Admin credentials and sample user accounts for verification 5. Brief hand-over session or screencast walking through the key flows Acceptance criteria • I can register, log in, upload a document, and share it with a single invited user; any other user is denied access. • The admin panel correctly lists accounts and total storage used. • All code runs cleanly from a fresh clone using the provided instructions. If you’ve built something similar or have a preferred framework that aligns with these needs, let me know in your proposal along with an estimated timeline.