Command line application and PHP library, providing an election engine with a high-level interface. Native support 20+ voting methods, easy to extend. Support simple elections with ease or billions of votes in low resource environment. Intensively tested and highly polyvalent.

Election simulator and election implementation for scored methods, ranked Condorcet methods, IRV, multi-winner, and more.

Working implementation of the Tideman Ranked Pairs (TRP) Condorcet voting method

PrefVote is to promote ranked-choice preference voting algorithms. Updated with Condorcet voting algorithms, it's descended from the Vote::STV software written which I wrote in Perl originally in 1998 and used by multiple clubs and non-profit organizations over the years for polls and elections.

Voting method exploration/simulation tool

Tideman Visualization Diagram