Usertour is an open-source user onboarding platform. It allows you to create in-app product tours, checklists, and surveys in minutes—effortlessly and with full control.The open-source alternative to Userflow and Appcues

A Node.js module for in-App-Purchase for iOS, Android, Amazon and Windows.

SDK for growing mobile in-app purchases

Discontinued: A lightweight implementation of Android In-app Update

Flutter SDK for cross-platform in-app purchase and subscription infrastructure, revenue analytics, engagement automation, and integrations

Kommunicate Android AI Agent SDK

Novu documentation

In-app browser that uses WKWebView

This is a simple example for creating Custom In-App KeyboardView in Android

Kommunicate plugin for Ionic/Phonegap/Cordova

Detect Kakaotalk in-app browser

NuGet package that implementing native In-App Reviews within a MAUI application with debugging capabilities

Resume in-app web browsing in the default web-browser of the continuing platform adopting handoff.

Laravel SDK for Novu

Implement Google Play in-app products and subscriptions on Android.

A simple javascript library to handle flash messages via Cookies

Detect facebook in app browser

In-app network logger for Flutter and Dart. Monitor, inspect, and debug HTTP requests directly inside your app. Features include real-time network monitoring, request/response history, detailed logs, filtering, search, and easy sharing of reports for faster debugging.

A CLI command to easily add Novu's notification inbox component to your React or Next.js project.

Simple iOS StoreKit library