51. BentoA delicious framework for building modularized Android user interfaces, by Yelp.
55. YPFastDateParserA class for parsing strings into NSDate instances, several times faster than NSDateFormatter
58. pidtree-bcceBPF tool for logging process ancestry of outbound TCP connections
64. schematizerA schema store service that tracks and manages all the schemas used in the Data Pipeline
67. android-varanusA client-side Android library to monitor and limit network traffic sent by your apps
72. pysensu-yelpA Python library to emit Sensu events that the Yelp Sensu Handlers can understand for Self-Service Sensu Monitoring
74. aactivatorAutomatically source and unsource a project's environment
75. parcelgenHelpful tool to make data objects easier for Android
76. EMRioElastic MapReduce instance optimizer
78. casperYelp's internal caching proxy, powered by Nginx and OpenResty at its core
79. salsaA tool for exporting iOS components into Sketch 📱💎
80. fidoAsynchronous HTTP client built on top of Crochet and Twisted
81. pgctlManage sets of developer services -- "playground control"