Doctrine 2 vs peewee: What are the differences?

Developers describe Doctrine 2 as "An object-relational mapper (ORM) for PHP 5.3.2+ that provides transparent persistence for PHP objects". Doctrine 2 sits on top of a powerful database abstraction layer (DBAL). One of its key features is the option to write database queries in a proprietary object oriented SQL dialect called Doctrine Query Language (DQL), inspired by Hibernates HQL. On the other hand, peewee is detailed as "A small, expressive ORM -- supports postgresql, mysql and sqlite". A small, expressive orm, written in python (2.6+, 3.2+), with built-in support for sqlite, mysql and postgresql and special extensions like hstore.

Doctrine 2 and peewee can be categorized as "Object Relational Mapper (ORM)" tools.

peewee is an open source tool with 6.64K GitHub stars and 1.1K GitHub forks. Here's a link to peewee's open source repository on GitHub.