Close to stable, but users are advised to be cautious and test thoroughly.
Create a Pages->find(query) as a field / FieldtypePagesSelectorQuery
This module allows you to defined a Pages selector query ($pages>find()) as a field and attach it to a template. The results of the query (PageArray) are accessed like any other page field, $page->myQuery By alevine
Custom Inputfield Dependencies / CustomInputfieldDependencies +8
Extends inputfield dependencies so that inputfield visibility or required status may be determined at runtime by selector or custom PHP code. By robin-s