PostGIS vs. Flyway vs. Active Admin

PostGIS is a spatial database extender for PostgreSQL object-relational database. It adds support for geographic objects allowing location queries to be run in SQL.

Easy to setup, simple to master. Flyway lets you regain control of your database migrations with pleasure and plain sql. Solves only one problem and solves it well. Flyway migrates your database, so you don't have to worry about it anymore.

Active Admin is a Ruby on Rails framework for creating elegant backends for website administration.