26 platforms and 102 books

 Android (2 books)

 AngularJS (5 books)

 Backbone (2 books)

 Bitcoin (1 books)

 Django (2 books)

 Elixir (1 books)

 Ember.js (1 books)

 Famo.us (1 books)

 Firefox OS (3 books)

 Git (3 books)

 Go (6 books)

 Groovy (2 books)

 Haskell (3 books)

 HTTP Protocol (2 books)

 iOS (4 books)

 Java (8 books)

 JavaScript (19 books)

 Meteor (7 books)

 Node.js (11 books)

 PHP (2 books)

 Play Framework (1 books)

 Python (4 books)

 Ruby On Rails (3 books)

 Ruby (5 books)

 Scala (2 books)

 Vim (2 books)