Extended properties editors

List of tools that allow editing of SQL Server extended properties.
Direct - read and save extended properties from SQL Server database.
Repository - edit metadata in separate repository and enable synchronization.
Custom fields - whether tool enables editing custom extended properties, apart MS_Description.

Dataedo

Dataedo enables you to catalog, document and understand your data with Data Dictionary, Business Glossary and ERDs. It enables to document your relational databases and share documentation in interactive HTML.

Generate documentation: Yes
Type: Repository
Extended properties: Custom fields
Commercial: Commercial
Free edition: No
Dataedo Schema Changes
Database Web Export
Database Web Edit

Elasoft SqlSpec

SqlSpec is a database documentation tool that will generate easy-to-read database documentation for almost all platforms. It has both GUI and command line interface. It enables you to generate entity-relation diagrams.

Generate documentation: Yes
Type: Direct
Extended properties: Just MS_Description
Commercial: Commercial
Free edition: No

xSQL Documenter

xSQL Documenter provides comprehensive, uniform, and easily navigable database documentation in HTML and compiled CHM format. xSQL Documenter allows you to edit extended properties on a live server from the generated documentation. It provides the ability to define your own extended properties on columns, indexes, triggers, parameters, etc that appear integrated into the documentation.

Generate documentation: Yes
Type: Direct
Extended properties: Custom fields
Commercial: Commercial
Free edition: Yes