- hyperloglog-redis 158 An implementation of the HyperLogLog algorithm backed by Redis
- mongoid_collection_snapshot 26 Easy maintenence of collections of processed data in MongoDB with the Mongoid ODM
- resque-heroku-scaling-canary 22 A resque plugin that scales heroku workers for batch jobs
- space-saver-redis 9 A pure Ruby implementation of the SpaceSaver algorithm for estimating the top K elements in a data stream
- IncrementalSVD.jl 9 Simon Funk's approach to collaborative filtering using the singular value decomposition, implemented in Julia.