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.

A rust library for tallying votes

Implementation of the Australian senate voting algorithm

Droop STV Election Counter

Apache STeVe -- a set of voting tools

STV vote counting for various actual jurisdictions.

Discord bot for polls and votes including STV. Supports hiding results and is written with Discord.py

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

A modern Procon replacement for Battlefield 4.

The reference implementation of the single transferable vote (STV) system used for student government elections at Carnegie Mellon University.

STV (Single Transferable Vote) implementation in TypeScript

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.

Determine winning candidate(s) in an STV election

Web program for graphing the distribution of preferences in Australian Senate elections.

JS implementation of Single Transferrable Vote (STV) counting

Eleição Contínua com Atualização de Parciais Automática

Analysis of multi-pass IRV elections, a problematic multi-winner form of RCV

R Package designed to parse .blt ballot files

Palpatine is an STV Vote Counter implemented in Idris.