https://help.tallysolutions.com/docs/te9rel60/Licensing/Introduction_to_Licensing.htm

Introduction to Tally.ERP 9 Licensing

You need to buy a Tally.ERP 9 license to use all the features of the product.

Tally.ERP 9 provides the following licensing options to you:

Tally.ERP 9 provides two distinct product editions:

     Tally.ERP 9 Silver Edition (Single User): The Silver edition is a single-user license. Only one user can access the license at a time in a LAN environment. For another user to access the same license, all other instance(s) of Tally.ERP 9 currently using the license must be closed. 

     Tally.ERP 9 Gold Edition (Multi-User): The Gold edition is a multi-user license. Multiple users can access the license at a time in a LAN environment.

Click here to buy a Tally.ERP 9 license.

See also

Activating Tally.ERP 9

Installing Tally.ERP 9

Upgrading to Tally.ERP 9 Release 6

Licensing - FAQ