Connecting Postgres database from MySQL Workbench
No. That's why it is called MySQL Workbench. The reason is that the MWB uses a lot of MySQL specific functionality.I don't think there is currently something similar for Postgres, but you could try Glom or pgadmin3.
A company-independent database manager is the commercial Aqua Data Studio - maybe it's worth a try.
Navicat Premium works for all major Database and apparently the best option if you have Money.http://www.navicat.com/en/products/navicat_premium/premium_overview.html
I recommend to Check this link: https://data36.com/install-sql-workbench-postgresql/ and after you'll install dependencies/plugins to run Postgres into MWBench