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Condorcet
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.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
In some ranked methods, such as borda & IRV, we treat unmarked candidates as being a voter's least favourite. Pairwise methods don't require this. Instead, each pairwise comparison can be based on explicit rankings from voters who included both candidates in their ranking. Unfortunately, pairwise methods are often not implemented this way; unfamiliar is equivalent to despised. The Condorcet software does the latter by default, but has a "--deactivate-implicit-ranking" option to disable this.