Document Management App and Website

I'm looking to develop an app and website for both my clients and myself. The platform should allow us to access, edit, and manage a variety of documents.

Key Features:
- Store and manage:
- Text documents
- Spreadsheets
- Presentations
- Editable templates
- Editing functionality (to be defined):
- Options may include track changes, version history, real-time collaboration

Ideal Skills:
- Experience in app and web development
- Familiarity with document editing tools
- Strong UI/UX design skills
- Knowledge of database management

Looking forward to your proposals!