Free and Open Source, Distributed, RESTful Search Engine

Ghidra is a software reverse engineering (SRE) framework

#1 Locally hosted web application that allows you to perform various operations on PDF files

Termux - a terminal emulator application for Android OS extendible by variety of packages.

A libre lightweight streaming front-end for Android.

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)

Learn System Design concepts and prepare for interviews using free resources.

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

⚡ Workflow Automation Platform. Orchestrate & Schedule code in any language, run anywhere, 500+ plugins. Alternative to Zapier, Rundeck, Camunda, Airflow...

QuestDB is a high performance, open-source, time-series database

The world's fastest open query engine for sub-second analytics both on and off the data lakehouse. With the flexibility to support nearly any scenario, StarRocks provides best-in-class performance …

Awesome LeetCode resources to learn Data Structures and Algorithms and prepare for Coding Interviews.

1️⃣🐝🏎️ The One Billion Row Challenge -- A fun exploration of how quickly 1B rows from a text file can be aggregated with Java

JPEXS Free Flash Decompiler

Generate awesome word(docx) with template

Angry IP Scanner - fast and friendly network scanner

Quickly find differences and similarities in disassembled code

Open-source third-party Telegram client with not many but useful modifications.

iOS and macOS Decompiler

OpenSPG is a Knowledge Graph Engine developed by Ant Group in collaboration with OpenKG, based on the SPG (Semantic-enhanced Programmable Graph) framework. Core Capabilities: 1) domain model constr…

Useful Resources for Low Level System Design

HiveMQ CE is a Java-based open source MQTT broker that fully supports MQTT 3.x and MQTT 5. It is the foundation of the HiveMQ Enterprise Connectivity and Messaging Platform

Backblaze Reed-Solomon Implementation in Java

Provides OCR (Optical Character Recognition) services through web applications

The original, highly-optimized C# Target for ANTLR 4

AntlrWorks tool for ANTLR

Visual Studio debugging visualizer, and .NET visualization controls, for ANTLR4 parse trees

A modern, minimal Kotlin-like language for MOS 6502 / 6510

A better compressed bitset in Java