IRV algorithm with a "no endorsement" option

This plugin allows sorting a list of options by preference of the user, instead of just selecting one.

CiviCRM extension which provides election functionality, including nominations, candidates and voting to CiviCRM.

Versatile PHP election engine (library & CLI) with a high-level API. Handles everything from the simplest use cases to advanced options and simulation tools. Supports 20+ native Condorcet-like voting methods (extensible), scales from small polls to billions of votes in resource-constrained environments. Rigorously tested and documented.