Open-source, cross platform Qt based IDE for reverse-engineering
...It features a friendly IDE-like layout including code editor with syntax highlighting support for *.smali code files. If you are just willing to quickly decompile an Android app, you can make use of DeAPK - Online APK Decompiler which lets you decompile an Android app using apktool and jadx.
...Bundling is a convenient way to test and package your JavaScript projects. The bundler uses Metro to package up all of your required node modules into a single file that can be packaged as a resource in your app. If you are running on the Android Emulator or iOS Simulator, you can run a local server on your development machine and hot-edit your JavaScript code.