A time-series database for high-performance real-time analytics packaged as a Postgres extension

Scalable PostgreSQL connection pooler

PicoRuby is the smallest Ruby implementation for one-chip microcontrollers

YugabyteDB - the cloud native distributed SQL database for mission-critical applications.

MongoDB-compatible database engine for cloud-native and open-source workloads. Built for scalability, performance, and developer productivity.

Hexagonal hierarchical geospatial indexing system

A super fast Graph Database uses GraphBLAS under the hood for its sparse adjacency matrix graph representation. Our goal is to provide the best Knowledge Graph for LLM (GraphRAG).

RunCPM is a multi-platform, portable, Z80 CP/M 2.2 emulator.

The Official Arduino AVR core

Open-source keyboard firmware for Atmel AVR and Arm USB families

interpreter and compiler to be compatible with ARITY/PROLOG（MS-DOS)

A PostgreSQL client library for Ruby

Reorganize tables in PostgreSQL databases with minimal locks

Text-mode interface for git

Optimized JSON

Adafruit GFX graphics core Arduino library, this is the 'core' class that all our other graphics libraries derive from

Ruby binding for zstd(Zstandard - Fast real-time compression algorithm)

Hypothetical Indexes for PostgreSQL

A completely-from-scratch hobby operating system: bootloader, kernel, drivers, C library, and userspace including a composited graphical UI, dynamic linker, syntax-highlighting text editor, network…

U8glib library for monochrome displays, version 2

A highly customizable macOS status bar replacement

uri type for PostgreSQL

Plan 9 History, from 1992-09-21 to 2015-01-10.

A High Performance HTTP Server for Ruby

Watchy - An Open Source E-Ink Smartwatch

A graph database as a Redis module

Arduino STM32. Hardware files to support STM32 boards, on Arduino IDE 1.8.x including LeafLabs Maple and other generic STM32F103 boards

LUFA - the Lightweight USB Framework for AVRs.

JSON output from a shell

Ruby/Numo::NArray - New NArray class library