Google Identity 185 Apps (93% of Top 200)

Google Analytics 182 Apps (91% of Top 200)

Google Analytics provides insight on app usage, user engagement, and cross-network attribution. It is natively integrated with Firebase, Google's app developer platform, and provides unlimited reporting for up to 500 distinct events, helping to understand clearly how app users behave.

Google AdMob 175 Apps (88% of Top 200)

AdMob helps a user monetize a mobile app through in-app advertising. Ads can be displayed as banner, interstitial, video, or native ads—which are seamlessly added to platform native UI components. AdMob uses the Google Mobile Ads SDK which helps app developers gain insights about their users and maximize ad revenue.

Firebase 171 Apps (86% of Top 200)

Firebase is a mobile and web app development platform that provides developers with a plethora of tools and services to help them develop high-quality apps, grow their user base, and earn more profit.

Gson 156 Apps (78% 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.

Square 143 Apps (72% of Top 200)

Firebase Cloud Messaging 136 Apps (68% of Top 200)

Firebase Cloud Messaging provides a reliable and efficient connection between servers and devices, allowing for the delivery and reception of messages on mobile devices. This cross-platform messaging solution lets app developers reliably deliver messages to app users at no cost.

Google Actions 129 Apps (65% of Top 200)

Square Okio 123 Apps (62% of Top 200)

Facebook 121 Apps (61% of Top 200)

Facebook provides the easiest way to track success of App Ads, implement powerful sharing or let people log into an app with Facebook. Among other tools, this SDK provides anonymized audience insight about the people interacting with the app as well as a way for people to login to the app through Facebook. It also contains five component SDKs that can be connected to individually.

Bolts 109 Apps (55% of Top 200)

Bolts is a collection of low-level libraries designed to make developing mobile apps easier. These libraries, originally created by Facebook and Parse, have been open sourced and made available to others without a mandatory Facebook developer or Parse affiliation. Bolts includes "tasks", which make organization of complex asynchronous code more manageable, and an implementation of the App Links Protocol, which helps link content in other apps.

Facebook Audience Network 107 Apps (54% of Top 200)

Facebook Audience Network is designed to maximize revenue with diverse demand from global advertisers. Facebook Audience Network helps you monetize your app by showing highly targeted ads that match the interests of your users.

ZXing 104 Apps (52% 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

Google Auth 104 Apps (52% of Top 200)

Unity Ads 94 Apps (47% of Top 200)

Unity Ads is a comprehensive monetization platform for Unity, iOS, and Android developers. Use it to easily monetize existing player base. The Unity Ads provides a comprehensive monetization framework for game.

Square Retrofit 91 Apps (46% of Top 200)

Retrofit turns your HTTP API into a Java interface. Retrofit offers Synchronous vs. Asynchronous opportunities.

AppLovin 89 Apps (45% of Top 200)

AppLovin offers a comprehensive platform where app developers of all sizes can connect with their ideal consumers and get discovered.

Crashlytics 87 Apps (44% of Top 200)

Crashlytics is a powerful and lightweight tool that delivers interactive, detailed crash reports in realtime. Crashlytics performs deep analyses of each thread and uses a multi-symbolication process to provide progressively higher levels of detail. It is one of the modular kits contained within Fabric and is available in both iOSand Android versions.

Vungle 81 Apps (41% of Top 200)

Vungle is a free and robust tool for effectively managing ads on mobile cross platforms such as IOS, Android, and windows. The Vungle tool is easy to integrate and improves the efficiency of in-app ads.

ironSource 81 Apps (41% of Top 200)

ironSource builds technologies that help app developers take their apps to the next level, including the industry’s largest in-app video network, a robust mobile ad mediation platform, and a data-driven user acquisition platform. ironSource offers you means to monetize your applications through AD campaigns.