> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.whaller.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Sphere

Networks on Whaller are made up of “spheres”. A sphere is a **secure and independent space where members can communicate** via public/private messages **and work together** using a variety of collaboration tools.

There are **several different types of spheres** to choose from, which allow you to customize your network according to your needs.  

**Classic sphere**  
A classic sphere is the most common type of sphere. It is private and sealed. Members must be invited to join to gain access.  
_Available from the Standard offer_

**Open sphere**  
An open sphere is a sphere that users can enter without needing to be invited. Any member on Whaller can access it.  
_Available from the Standard offer_

**Global sphere**  
A global sphere contains all members of an organization. Once a sphere is defined as a "global sphere" (on the organization's portal), all organization members will automatically be included in it, without needing an invitation. This is useful for quickly addressing the entire network.  
_Available from the Standard offer_

**Public sphere**  
A public sphere is open to everyone, even those not registered on Whaller. Anyone who knows the web address can enter.

_Available from the Standard offer_

**Restricted sphere**  
A restricted sphere limits writing. Sphere members can only write to the designated sphere "staff" (_defined by the administrators_) via private messages, or leave comments on messages posted by the staff.

The staff can post messages visible to all members.

The members directory is hidden.  
_Available from the Business offer_

Learn more about [Restricted spheres](/en/article/what-is-a-restricted-sphere-t9r6fb/)

 **Visitor sphere**  
A visitor sphere allows members to invite outside actors (clients, providers, partners, etc.) to communicate and collaborate with them. Users who have been designated as “visitors” have limited rights.  
_Available from the Business offer_  

Learn more about [Visitor spheres](/en/article/members-visitors-k6u387/)

**Forum sphere**  
A forum sphere allows a Q&A format. Comments must be approved for publication by a moderator.  
_Available from the Business offer_
  
**Ephemeral sphere** 
An ephemeral sphere is a sphere whose archive date can be scheduled in advance.
_Available from the Enterprise offer_

**News sphere**  
A News sphere provides a way to highlight content in a federation. It allows messages posted in it to be displayed on federation members' root pages.  
_Available with the Enterprise offer_  

Learn more about [News spheres](/en/article/how-to-enable-news-spheres-jwgecv/)


### How to create a sphere