ApexSQL Doc - ApexSQL Doc creates database documentation in a variety of formats.
Dataedo - Database documentation tool
DBeaver - DBeaver - Universal Database Manager and SQL Client.
dbForge SQL Complete - Try Intellisense functionality and Improved SQL Formatter in SQL Server Management Studio and Visual Studio using SQL Complete!
SQL Data Dictionary - Easily generate a PDF or HTML data dictionary from SQL Server with just a few clicks.
DbSchema - DbSchema - Visual Database Design & Management Tool