- PostGIS: Used in a Ruby on Rails application for mapping
- Performance tuning
- Migrating applications from NoSQL
Used directly as well as through ORM layers in Java, Ruby, PHP, Python, and C++
Used for embedded and memory-constricted devices as well as in mobile applications
Mnesia and ets
Used to manage routes/bindings in RabbitMQ for custom exchange types to allow for wildcard keyword and geographic/location-based routing.