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Development Tools for Books & Reference Apps

Totals
Books & Reference Apps with SDKs

Verified SDK counts are based on apps decompiled by AppGoblin.

AndroidiOS
Books & Reference Apps2,7922,274
Monthly Installs696.6M19M
Top Companies (Android SDKs)
Top Companies (iOS SDKs)

Development Tools include SDKs, libraries, and platforms that assist developers in building, testing, and deploying mobile applications. Shown here for apps in the Books & Reference category.

AppGoblin has mapped and verified 37 companies with Android SDKs and 30 with iOS SDKs.

Mixed
🇺🇸
Google Google (google.com)

728.6M

42.1M
Open Source
Kotlin Kotlin (kotlinlang.org)

653M

Open Source
nanopb nanopb (github.com-nanopb)

16M
Mixed
Square Square (square.com)

668.3M

Open Source
JetBrains JetBrains (jetbrains.com)

227.2M

Open Source
Bumptech Bumptech (github.com-bumptech)

237.6M

2.8K
Open Source
Airbnb Engineering Airbnb Engineering (airbnb.io)

322.6M

11.3M
Open Source
Flutter Flutter (flutter.dev)

227.6M

1.9M
Open Source
Default Company Logo JetBrains IntelliJ (intellij.org)

158.6M

Open Source
Default Company Logo Checker Framework (checkerframework.org)

154.6M

Open Source
SDWebImage SDWebImage (github.com-SDWebImage)

4.9M
Open Source
Alamofire Alamofire (github.com-AlamoFire)

4.6M
Open Source
OpenID OpenID (github.com-openid)

11.5M
Open Source
ReactiveX ReactiveX (reactivex.io)

194.4M

1.2M
Mixed
🇺🇸
Facebook Facebook (facebook.com)

8.7M

1.3M
Open Source
🇺🇸
Sentry.io Sentry.io (sentry.io)

215.9M

6.7M
Tracking
🇺🇸
Unity Unity (unity.com)

60.6M

129.2K
Open Source
Reachability Reachability (github.com-tonymillion)

2.3M
Open Source
Greenrobot Greenrobot (greenrobot.org)

143.3M

Open Source
🇺🇸
MongoDB MongoDB (mongodb.com)

86.3M

1.4M
Open Source
Expo Expo (expo.dev)

3.6M

959.8K
Open Source
Jake Wharton Jake Wharton (github.com-JakeWharton)

264.7M

Open Source
React Native React Native (reactnative.dev)

8.7M

Mixed
🇺🇸
Amazon Advertisement Amazon Advertisement (amazon.com)

32M

1.3M
Tracking
🇺🇸
Microsoft Microsoft (microsoft.com)

22.9M

21.8K
Open Source
Divkit Divkit (divkit.tech)

3M

14.3K
Open Source
BouncyCastle BouncyCastle (bouncycastle.org)

16.1M

Open Source
OpenTelemetry OpenTelemetry (opentelemetry.io)

11.5M

71.1K
Open Source
🇺🇸
PostHog PostHog (posthog.com)

300K

246.3K
Open Source
Apollo Apollo (apollographql.com)

20.3M

1.7M
Open Source
Starscream Starscream (github.com-daltoniam)

337.2K
Tracking
Rive Rive (rive.app)

156.4K

226.9K
Tracking
🇺🇸
Datadog Datadog (datadoghq.com)

15.4M

346.2K
Open Source
Mono Project Mono Project (mono-project.com)

576.3K

552
Open Source
Swinject Swinject (github.com-Swinject)

13.2K
Mixed
🇷🇺
Yandex Yandex (yandex.com)

9.5K
Tracking
🇺🇸
New Relic New Relic (newrelic.com)

556.5K

517.8K
Open Source
Socket.IO Socket.IO (socket.io)

77.6M

Tracking
🇺🇸
Epic Games Epic Games (epicgames.com)

52.6K

334
Open Source
Eclipse Eclipse (eclipse.org)

24.8M

Tracking
Cocos Cocos (cocos.com)

970.6K

Open Source
KMP Coroutines KMP Coroutines (github.com/rickclephas)

20.9K
Open Source
🇺🇸
Amazon Web Services AWS Amazon Web Services AWS (amazonaws.com)

12.8M

Tracking
🇺🇸
Statsig Statsig (statsig.com)

2.1M

Open Source
Vanniktech Vanniktech (github.com-vanniktech)

784.5K

Open Source
Default Company Logo ONNX Runtime (onnxruntime.ai)

167.3K

Tracking
Cloudflare Cloudflare (cloudflare.com)

Open Source
🇺🇸
jQuery jQuery (jquery.com)

Open Source
🇺🇸
jsDelivr jsDelivr (jsdelivr.net)

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About AppGoblin SDK data

SDK data is derived by downloading the app's Android APK or iOS IPA file and unzipped. We then check the app's data for SDK signatures in paths, AndroidManifest.xml and the Info.plist. Many apps are unable to be zipped. Downloading and opening the APK or IPA takes time and resources thus the smaller totals.