What are some alternatives?
When comparing pgModeler and RazorSQL, you can also consider the following products
DbSchema - DbSchema - ER Diagram & SQL Database Tool
DBeaver - DBeaver - Universal Database Manager and SQL Client.
MySQL Workbench - MySQL Workbench is a unified visual tool for database architects, developers, and DBAs.
ERBuilder - ERBuilder is a data modeling software that provides all the features you would expect from a professional database modeling tool such as reverse engineering, generating DDL scripts and databases, generating data, comparing models & databases and more
Navicat - Powerful database management & design tool for Win, Mac & Linux. With intuitive GUI, user manages MySQL, MariaDB, SQL Server, SQLite, Oracle & PostgreSQL DB easily.
HeidiSQL - HeidiSQL is a powerful and easy client for MySQL, MariaDB, Microsoft SQL Server and PostgreSQL. Open source and entirely free to use.