Ghidra is a software reverse engineering (SRE) framework

Free universal database tool and SQL client

Dex to Java decompiler

A libre lightweight streaming front-end for Android.

Render After Effects animations natively on Android and iOS, Web, and React Native

ZXing ("Zebra Crossing") barcode scanning library for Java, Android

Open Source Identity and Access Management For Modern Applications and Services

Telegram for Android source

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

a fast, scalable, multi-language and extensible build system

Jenkins automation server

A tool for reverse engineering Android apk files

This project is deprecated and stale. The latest ExoPlayer code is available in https://github.com/androidx/media

ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.

A fast dependency injector for Android and Java.

Zipkin is a distributed tracing system

Graphs for Everyone

Apache Hadoop

A Java 8+ Jar & Android APK Reverse Engineering Suite (Decompiler, Editor, Debugger & More)

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

Tools to work with android .dex and java .class files

Free implementation of Play Services

🔎 Open source distributed and RESTful search engine.

Activiti is a light-weight workflow and Business Process Management (BPM) Platform targeted at business people, developers and system admins. Its core is a super-fast and rock-solid BPMN 2 process …

Continuous Inspection

Spinnaker is an open source, multi-cloud continuous delivery platform for releasing software changes with high velocity and confidence.

Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

OWASP dependency-check is a software composition analysis utility that detects publicly disclosed vulnerabilities in application dependencies.

The modern Java bytecode editor