Open-source alternatives to Displayplacer

Terminal-kit is a Node.js toolkit for building command-line applications and console user interfaces. It provides a comprehensive suite of utilities for console text styling, terminal graphics rendering, input parsing, and interactive interface construction. The library features a cell-based text grid model, a component document tree for hierarchical layout of interactive widgets, and off-screen pixel buffering for multi-layered image composition and manipulation. It handles direct escape-sequence output control and raw-mode input parsing to manage display regions and capture user interaction

This project is a C++ library and hardware driver designed to control Hub75 RGB LED panels using the GPIO pins of a Raspberry Pi. It functions as both a low-level panel controller and a graphics library for rendering visual content on low-resolution LED grids. The system distinguishes itself through a comprehensive set of hardware configuration tools, including custom pixel mapping, rotation, and mirroring to match physical display geometries. It supports multi-display chaining in both parallel and series configurations and provides a Python binding to expose the core C++ logic for hardware a

Ddcctl is a command-line utility for macOS that interfaces directly with connected hardware displays to modify settings programmatically. It provides terminal-based control over external monitor properties such as brightness, contrast, volume, and color profiles. The utility communicates with external hardware using the standard bidirectional monitor control bus to read and write feature values. It queries native operating system display services and walks the kernel device registry to discover attached physical monitors, resolve their hardware service ports, and map user input from terminal

LittleBigMouse is a multi-monitor DPI mouse manager designed to synchronize cursor movement and transitions across displays with differing pixel densities. It functions as a cursor transition controller and display geometry optimizer to ensure consistent mouse navigation in diverse monitor setups. The software provides tools for adjusting virtual screen sizes and positions to match a physical desk layout. It implements mouse movement normalization and transition coordination to eliminate cursor jumps when crossing boundaries between monitors with different DPI settings. The system includes c

parsec-vdd is a virtual display driver manager and headless server display emulator. It simulates active software-defined monitors to enable remote desktop sessions and game streaming on host systems that lack physical displays. The project provides a system tray interface for managing the monitor lifecycle, allowing users to add or remove virtual screens and capture screenshots. It enables the definition of custom widths, heights, and refresh rates for these virtual displays via system registry presets. The tool handles display property configuration and monitors device status using hardwar

This project is a cross-platform library designed for desktop application development, providing a unified interface for window management, input handling, and hardware-accelerated graphics. It serves as a foundational framework that abstracts platform-specific windowing protocols and graphics APIs, enabling developers to create interactive software that functions consistently across Windows, macOS, and Linux. The library distinguishes itself by providing deep integration with low-level graphics APIs, specifically OpenGL and Vulkan. It manages the complexities of graphics context initializati

This project is a self-hosted RSS and Atom feed aggregator designed as a modular extension for the Nextcloud ecosystem. It provides a centralized interface for collecting, organizing, and reading content from multiple web sources, allowing users to maintain private archives of their subscriptions without relying on third-party services. The application distinguishes itself through its focus on cross-platform synchronization and portability. It supports the import and export of feed collections using standard file formats and exposes a programmatic interface that allows external applications t

MAME is a vintage hardware emulation platform designed to recreate the circuitry of arcade games, computers, and consoles to run original software on modern devices. It functions as a retro gaming preservation framework for managing, verifying, and archiving ROM sets and disk images to ensure long-term software accessibility. The project features a system debugging tool for inspecting emulated memory, CPU registers, and execution flow via breakpoints and disassembly. It also includes a Lua-based automation layer that exposes core system state and hardware controls for custom behavior and anal

Solaar is a device management tool and configuration suite for Logitech wireless peripherals on Linux. It serves as an input peripheral monitor that tracks battery levels and connection link quality via a system tray application, while providing a receiver manager for pairing and unpairing wireless devices with proprietary USB receivers. The project features an input device automation engine that maps hardware events and mouse gestures to simulated keyboard inputs or system commands. This allows for the creation of custom rules that trigger actions based on device notifications or specific wi

LibGDX is a Java-based framework designed for cross-platform game development, enabling the creation and deployment of 2D and 3D games across desktop, mobile, and web environments from a single codebase. It functions as a comprehensive library that abstracts hardware-accelerated graphics, audio, input, and file system access, providing a unified interface for developers to manage game logic and application lifecycles. The framework distinguishes itself through a high-performance architecture that prioritizes efficiency and native interoperability. It utilizes a batch-oriented graphics pipelin

Airplay-SDK is a software development kit and wireless multimedia streaming library for implementing AirPlay mirroring and casting functionality on Android devices. It serves as a network media receiver and screen mirroring framework that allows devices to ingest high-resolution audio and video streams over a local network. The toolkit enables the reception of screen mirrors from mobile and desktop devices without requiring sender software. It supports multi-screen casting to manage one-to-many or many-to-one display configurations, including the ability to render up to four different incomin

u8g2 is a monochrome display driver library written in C and C++ for rendering graphics and text on OLED and LCD screens. It functions as an embedded graphics library and font renderer, providing a hardware abstraction layer to manage communication with display controllers. The library is distinguished by its flexible memory management, offering both full-screen memory mapping for arbitrary drawing and page-based frame buffering to reduce RAM consumption. It further optimizes resource usage through direct-to-display text rendering, which bypasses intermediate memory buffers. The framework co

melonDS is an open-source emulator that runs original Nintendo DS and DSi games on modern operating systems with high-accuracy hardware simulation. It emulates the DS and DSi CPUs, video, and audio systems, and supports booting from original system firmware for access to the system menu and configuration screens. The emulator distinguishes itself through cycle-accurate component simulation for precise timing and compatibility, a JIT dynamic recompilation engine that translates game code to native x86_64 or AArch64 instructions for faster performance, and OpenGL hardware-accelerated rendering

Twinkle Tray is a Windows display manager and DDC/CI monitor control utility designed to manage hardware settings across internal and external displays. It functions as a system tray application that allows for the adjustment of brightness, contrast, and volume on multiple monitors. The project provides multi-display brightness normalization to balance backlight levels across different hardware profiles for a consistent visual experience. It also includes an automatic brightness scheduler that modifies luminosity based on the time of day or system idle states. Beyond the user interface, the

Lunar is an adaptive monitor brightness controller and DDC/CI display manager. It allows for the control of hardware brightness, contrast, and volume on external monitors using native communication protocols. When direct hardware control is unavailable, it functions as a software gamma dimmer to simulate brightness reduction. The project synchronizes external monitor brightness with laptop light sensors, wireless lux meters, or astronomical sun position calculations. It also manages hardware monitor presets, enabling the automation of display configurations and input switching through custom

jose is a cryptography library for signing, encrypting, and verifying tokens and messages using the JSON Object Signing and Encryption standards. It provides a toolkit for the implementation of JSON Web Tokens, JSON Web Signatures, and JSON Web Encryption. The library serves as a high-level interface for the Web Crypto API, allowing for the generation, import, and export of symmetric secrets and asymmetric key pairs. It handles the encryption and decryption of web messages and the validation of digital signatures to ensure data integrity and identity. Its capabilities cover cryptographic key

This is an educational tutorial that walks through implementing a complete JSON library from scratch in C. The project covers the full data lifecycle of JSON, including parsing text into structured in-memory representations, validating input against the specification, serializing data back into standard JSON output, and providing structured access to elements within parsed arrays and objects. The implementation is built around a hand-written recursive descent parser that processes JSON text by matching grammar rules to build a structured data tree. Parsed values are stored in a tagged union r

This is a Ruby implementation library for encoding, decoding, and verifying JSON Web Tokens according to the RFC 7519 standard. It provides the primary tools for token signing and encoding, integrity verification, and the extraction of payloads and headers. The project includes a comprehensive JSON Web Key manager for importing, exporting, and resolving key sets. This system facilitates the generation of key thumbprints and the resolution of specific verification keys based on token identifiers. The library covers a wide range of security validation mechanisms, including the verification of