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Utilities SDKs in Top 200 Free Android Apps

  1. Gson Gson 111 Apps (56% of Top 200)

    Gson is a Java library that can be used to convert Java Objects into their JSON representation. It can also be used to convert a JSON string to an equivalent Java object. Gson can work with arbitrary Java objects including pre-existing objects that you do not have source-code of.

    • 95. Uber - Request a ride
    • 20. Amazon Shopping
    • 52. Twitter
    • 47. Subway Surfers
    • 32. Spotify: Music and Podcasts
    • 11. Snapchat
  2. Google Guava Google Guava 99 Apps (50% of Top 200)

    Guava is a set of core libraries that includes new collection types (such as multimap and multiset), immutable collections, a graph library, and utilities for concurrency, I/O, hashing, primitives, strings, and more. Guava comes in two flavors; the JRE flavor requires JDK 1.8 or higher, if you need support for JDK 1.7 or Android, use the Android flavor. You can find the Android Guava source in the android directory.

    • 95. Uber - Request a ride
    • 20. Amazon Shopping
    • 32. Spotify: Music and Podcasts
    • 191. ESPN
    • 184. Etsy: Buy & Sell Unique Items
    • 185. eBay - Shop at the Marketplace
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  4. Square Okio Square Okio 89 Apps (45% of Top 200)

    • 20. Amazon Shopping
    • 32. Spotify: Music and Podcasts
    • 191. ESPN
    • 184. Etsy: Buy & Sell Unique Items
    • 185. eBay - Shop at the Marketplace
    • 150. Pandora - Music & Podcasts
  5. ZXing ZXing 75 Apps (38% of Top 200)

    Zxing is a multi-format 1D/2D barcode image processing library. This opensource pluggin even though presently in development mode, still is a great option for developers. The pluggin is optimized with JRprofilerand implemented in Java, with ports to other languages

    • 20. Amazon Shopping
    • 52. Twitter
    • 32. Spotify: Music and Podcasts
    • 184. Etsy: Buy & Sell Unique Items
    • 185. eBay - Shop at the Marketplace
    • 150. Pandora - Music & Podcasts
  6. Google Actions Google Actions 74 Apps (37% of Top 200)

    • 185. eBay - Shop at the Marketplace
    • 150. Pandora - Music & Podcasts
    • 139. 8 Ball Pool
    • 132. OfferUp: Buy. Sell. Letgo.
    • 18. Amazon Alexa
    • 167. Township
  7. Protocol Buffers Protocol Buffers 52 Apps (26% of Top 200)

    Protocol Buffers are Google's language-neutral, platform-neutral, extensible mechanism for serializing structured data. The protocol compiler for Protocol Buffers is written in C++ with pre-built binaries only provided for released versions.

    • 95. Uber - Request a ride
    • 20. Amazon Shopping
    • 52. Twitter
    • 32. Spotify: Music and Podcasts
    • 184. Etsy: Buy & Sell Unique Items
    • 185. eBay - Shop at the Marketplace
  8. Glide Glide 49 Apps (25% of Top 200)

    Glide is a fast and efficient open source media management and image loading framework for Android that wraps media decoding, memory and disk caching, and resource pooling into a simple and easy to use interface. Glide includes a flexible API that allows developers to plug in to almost any network stack.

    • 20. Amazon Shopping
    • 191. ESPN
    • 184. Etsy: Buy & Sell Unique Items
    • 150. Pandora - Music & Podcasts
    • 69. Booking.com: Hotels and more
    • 21. Walmart Shopping & Grocery
  9. Fmod Fmod 45 Apps (23% of Top 200)

    • 47. Subway Surfers
    • 167. Township
    • 5. Roblox
    • 80. Coin Master
    • 100. Snake.io - Fun Snake .io Games
    • 190. Evony: The King's Return
  10. Square Picasso Square Picasso 44 Apps (22% of Top 200)

    Picasso is a powerful image downloading and caching library for Android. Picasso allows for hassle-free image loading in your application—often in one line of code!

    • 20. Amazon Shopping
    • 32. Spotify: Music and Podcasts
    • 184. Etsy: Buy & Sell Unique Items
    • 78. Pinterest
    • 139. 8 Ball Pool
    • 69. Booking.com: Hotels and more
  11. Android JNI Bridge Android JNI Bridge 40 Apps (20% of Top 200)

    Android-jni-bridge is an open source bridge android sdk with google play services fully implemented. android-jni-bridge is available via its github repo.

    • 80. Coin Master
    • 100. Snake.io - Fun Snake .io Games
    • 190. Evony: The King's Return
    • 67. Magic Tiles 3
    • 173. Match Masters
    • 141. Tiles Hop: EDM Rush!
  12. Square Dagger Square Dagger 33 Apps (17% of Top 200)

    Squares dagger presently deprecated by googles dagger allows you to focus on the interesting classes, declare dependencies, specify how to satisfy them, and ship your app. To contrast, the worst classes in any application are the ones that take up space without doing much at all: the BarcodeDecoderFactory, the CameraServiceLoader, and the MutableContextWrapper. These classes are the clumsy duct tape that wires the interesting stuff together. Dagger is a replacement for these FactoryFactory classes.

    • 20. Amazon Shopping
    • 185. eBay - Shop at the Marketplace
    • 150. Pandora - Music & Podcasts
    • 49. PayPal - Send, Shop, Manage
    • 14. Netflix
    • 132. OfferUp: Buy. Sell. Letgo.
  13. Greenrobot EventBus Greenrobot EventBus 30 Apps (15% of Top 200)

    EventBus is an open-source library for Android and Java using the publisher/subscriber pattern for loose coupling. EventBus enables central communication to decoupled classes with just a few lines of code – simplifying the code, removing dependencies, and speeding up app development.

    • 20. Amazon Shopping
    • 52. Twitter
    • 191. ESPN
    • 78. Pinterest
    • 69. Booking.com: Hotels and more
    • 49. PayPal - Send, Shop, Manage
  14. DuAd DuAd 23 Apps (12% of Top 200)

    • 52. Twitter
    • 32. Spotify: Music and Podcasts
    • 11. Snapchat
    • 191. ESPN
    • 180. Google Translate
    • 192. Google Find My Device
  15. FasterXML Jackson FasterXML Jackson 22 Apps (11% of Top 200)

    Jackson is a suite of data-processing tools for Java (and the JVM platform), including the flagship streaming JSON parser / generator library, matching data-binding library (POJOs to and from JSON) and additional data format modules to process data encoded in Avro, BSON, CBOR, CSV, Smile, (Java) Properties, Protobuf, XML or YAML. Jackson suite has two major branches: 1.x is in maintenance mode, and only bug-fix versions are released; 2.x is the actively developed version.

    • 20. Amazon Shopping
    • 52. Twitter
    • 32. Spotify: Music and Podcasts
    • 191. ESPN
    • 184. Etsy: Buy & Sell Unique Items
    • 150. Pandora - Music & Podcasts
  16. Slf4j Slf4j 20 Apps (10% of Top 200)

    • 20. Amazon Shopping
    • 32. Spotify: Music and Podcasts
    • 191. ESPN
    • 150. Pandora - Music & Podcasts
    • 14. Netflix
    • 87. Fitbit
  17. Joda Time Joda Time 19 Apps (10% of Top 200)

    Joda Time provides a quality replacement for the Java date and time classes. The design allows for multiple calendar systems, while still providing a simple API. The 'default' calendar is the ISO8601 standard which is used by XML. In Joda-Time the Gregorian, Julian, Buddhist, Coptic, Ethiopic and Islamic systems are also included. Supporting classes include time zone, duration, format and parsing.

    • 20. Amazon Shopping
    • 191. ESPN
    • 150. Pandora - Music & Podcasts
    • 69. Booking.com: Hotels and more
    • 87. Fitbit
    • 18. Amazon Alexa
  18. Apache Commons Codec Apache Commons Codec 18 Apps (9% of Top 200)

    Apache Commons Codec (TM) software provides implementations of common encoders and decoders such as Base64, Hex, Phonetic and URLs. Apache commons codec was formed as an attempt to focus development effort on one definitive implementation of the Base64 encoder. At the time of Codec's proposal, there were approximately 34 different Java classes that dealt with Base64 encoding spread over the Foundation's CVS repository.

    • 20. Amazon Shopping
    • 184. Etsy: Buy & Sell Unique Items
    • 150. Pandora - Music & Podcasts
    • 78. Pinterest
    • 69. Booking.com: Hotels and more
    • 14. Netflix
  19. Chromium Chromium 17 Apps (9% of Top 200)

    • 95. Uber - Request a ride
    • 11. Snapchat
    • 185. eBay - Shop at the Marketplace
    • 78. Pinterest
    • 180. Google Translate
    • 14. Netflix
  20. Apache Commons Lang3 Apache Commons Lang3 12 Apps (6% of Top 200)

    Commons Lang provides a host of helper utilities for the java.lang API, notably String manipulation methods, basic numerical methods, object reflection, concurrency, creation and serialization and System properties. Commons Lang contains basic enhancements to java.util.Date and a series of utilities dedicated to help with building methods, such as hashCode, toString and equals.

    • 20. Amazon Shopping
    • 32. Spotify: Music and Podcasts
    • 184. Etsy: Buy & Sell Unique Items
    • 150. Pandora - Music & Podcasts
    • 25. Roku - Official Remote Control
    • 18. Amazon Alexa
  21. Apache Commons.io Apache Commons.io 12 Apps (6% of Top 200)

    Commons IO is a library of utilities to assist with developing IO functionality. Commons IO consists of six main areas, namely; Utility classes (with static methods to perform common tasks), Input (useful Input Stream and Reader implementations), Output (useful Output Stream and Writer implementations), Filters (various implementations of file filters), Comparators (various implementations of java.util.Comparator for files), File Monitor (a component for monitoring file system events)

    • 20. Amazon Shopping
    • 32. Spotify: Music and Podcasts
    • 191. ESPN
    • 150. Pandora - Music & Podcasts
    • 78. Pinterest
    • 18. Amazon Alexa

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