File (images) Cloud manager tagging and sharing software/website anyone ?

I don't know where to look for it/ask for help, so I'm trying here.

I'm looking for something like Cloud Storage to create sort of a image library with the following features:

1. First of all – adding TAGS in an easy and advanced way, creating their different configurations

2. Advanced search/filter using different combinations of tags (adding/substracting tags, etc.)

3. Ability to use and make changes in the cloud on different computers

4. Ability to easily share the library for browsing/searching for everyone

So far, the closest is something like "Tabbles", but I'm not sure if it's possible to easily give everyone access to view images/search the library, without permisson to make changes and if it's working ?