Ghidra is a software reverse engineering (SRE) framework

光 HikariCP・A solid, high-performance, JDBC connection pool at last.

The official home of the Presto distributed SQL query engine for big data

Apache Druid: a high performance real-time analytics database.

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.

Generate diagrams from textual description

The Java gRPC implementation. HTTP/2 based RPC

Haven is for people who need a way to protect their personal spaces and possessions without compromising their own privacy, through an Android app and on-device sensors

JPEXS Free Flash Decompiler

AIMSICD • Fight IMSI-Catcher, StingRay and silent SMS!

Google Reader inspired self-hosted personal RSS reader.

An open source multi-modal trip planner

Backup Android SMS, MMS and call log to Gmail / Gcal / IMAP

Dead-Simple Packaging and Deployment for JVM Apps

A set of command line tools (in Java) for manipulating high-throughput sequencing (HTS) data and formats such as SAM/BAM/CRAM and VCF.

Open source research data repository software

ditaa is a small command-line utility that can convert diagrams drawn using ascii art ('drawings' that contain characters that resemble lines like | / - ), into proper bitmap graphics.

An extendible and configurable PDF manipulation layer library written in java.

A Java implementation of the ICE protocol

Pure Data for Android

Websocket server interface for Kafka distributed message broker

Etherpad + plugins and many other extensions (check out the various branches). I'm available for consultancy hacking on etherpad.