Twitter puts out a LOT of software, and open-sources a good portion. I don't know if this is smart in the sense of being overstaffed relative to their revenue,

Twitter puts out a LOT of software, and open-sources a good portion. I don't know if this is smart in the sense of being overstaffed relative to their revenue, but they do it regardless. Some examples: [1] Fabric, an SDK for mobile apps - https://docs.fabric.io/android/fabric/overview.html https://docs.fabric.io/android/fabric/overview.html [2] Heron, a realtime, distributed, fault-tolerant stream processing engine - https://github.com/twitter/heron https://github.com/twitter/heron [3] Finagle, a fault tolerant, protocol-agnostic RPC system - https://github.com/twitter/finagle/ https://github.com/twitter/finagle/ [4] FlockDB, a distributed, fault-tolerant graph database - https://github.com/twitter/flockdb https://github.com/twitter/flockdb [5] Ruby implementation of the ICU (International Components for Unicode - https://github.com/twitter/twitter-cldr-rb https://github.com/twitter/twitter-cldr-rb [6] Clockwork Raven, Human-Powered Data Analysis with Mechanical Turk - https://github.com/twitter/clockworkraven https://github.com/twitter/clockworkraven [7] Gizzard, a flexible sharding framework for creating eventually-consistent distributed datastores - https://github.com/twitter/gizzard https://github.com/twitter/gizzard [8] Twemcache, a Twitter fork of Memcached - https://github.com/twitter/twemcache https://github.com/twitter/twemcache [9] Twemproxy, a fast, light-weight proxy for memcached and redis - https://github.com/twitter/twemproxy https://github.com/twitter/twemproxy [10] Iago, a webapp load tester - https://github.com/twitter/iago https://github.com/twitter/iago [11] Ospriet, a bestof/voting app - https://github.com/twitter/ospriet https://github.com/twitter/ospriet