KO3 module integrating Doctrine1.2 into Kohana - including native validation - work in progress!
A drop in blogging module for Kohana
payment gateways interaction, have been tested for 3.1.2
A module to make integration between your KohanaPHP (v3.x) applications and Google's Analytics API a breeze.
Kohana extension with lots of tools
Solr powered search for Kohana
Automatic breadcrumbs for Controller actions in kohana framework
Google maps v3 module for Kohana 3.x
Kohana 3 module for quick review of present Kohana classes and their properties/methods
CoffeeScript compiler for Kohana.
DEPRECATED AND NO LONGER MAINTAINED
Light "flash" messages module for the Kohana framework.
Kohana 3.x Module for Predis (Redis Client)
Developer Bar (inspired on Kohana Debug Toolbar) for Kohana 3+ PHP