Open-source alternatives to Codec From Scratch

This repository is a comprehensive collection of data structures and algorithms implemented in JavaScript, designed primarily as an educational resource for computer science study and technical interview preparation. It provides modular implementations of fundamental programming concepts, allowing developers to explore algorithmic logic and data organization through self-contained, verifiable code examples. The library distinguishes itself by pairing every implementation with formal Big O notation, providing predictable insights into time and space scaling requirements. Each algorithm is stru

Learn how npm or Yarn v1 works.

This project is a content delivery network implementation that uses a web server and scripting language to cache content at the edge and reduce latency for end users. It functions as a distributed system designed to store backend responses on edge nodes and route incoming client requests through a proxy. The system utilizes custom request logic to handle edge caching strategies, including the delivery of stale content during origin failures. It implements request coalescing to merge simultaneous requests for the same resource into a single upstream call to prevent backend overload. The proje

An extremely lite-weight cache framework in Kotlin, demonstrating how cache works.

This project is a pedagogical implementation of a hash table in C, built from scratch using open addressing and linear probing for collision resolution. It serves as a computer science algorithm demo, demonstrating how to construct a fundamental key-value store at a low level. The implementation covers the core operations of an associative array: inserting a key-value pair, looking up a value by its key, and deleting a pair. It uses a hash function to compute storage locations, maps hash values to array indices with the modulo operator, and resolves collisions by scanning sequentially through

📦 A simplified example of a modern module bundler written in JavaScript

GitQL is a extensible SQL-like query language and SDK to perform queries on various data sources such .git files with supports of most of SQL features such as grouping, ordering and aggregation and window functions and allow customization like user-defined types and functions

This is a simple captive portal demo for MicroPython using NodeMCU/ESP8266.

A Minimal, Header only Modern c++ library for terminal goodies 💄✨

A PowerToys Run plugin for killing processes.

This project is a terminal-based log analyzer and real-time traffic monitoring system designed for web server environments. It processes raw server access logs to generate structured statistical insights, providing visibility into visitor behavior, bandwidth usage, and request latency. The tool functions as a high-performance utility capable of handling large-scale datasets through multi-threaded parsing and memory-efficient data structures. The software distinguishes itself by offering both an interactive terminal interface and a web-based dashboard that updates in real-time via WebSocket st

ast-grep is a command-line utility and static analysis engine designed for searching, linting, and refactoring source code. It operates by identifying and transforming code blocks based on their underlying syntactic structure rather than relying on text-based or regular expression matching. The tool utilizes a language-agnostic abstraction to normalize diverse programming grammars into a unified tree structure. By employing a rule-driven engine, it allows users to define complex patterns that capture syntax nodes as variables, enabling consistent and syntactically valid modifications across e

dupeguru is a content-based file deduplicator and cross-platform disk cleanup tool. It functions as a local file management utility designed to identify and remove redundant files to recover disk space. The application identifies identical files across a file system by using content hashing and metadata comparison. This allows it to detect duplicates regardless of their filenames or directory locations. The software covers a range of data management capabilities, including directory scanning, content-based data deduplication, and the consolidation of redundant copies into single versions. It

Semantic version control => entity-level diffs, blame, and impact analysis on top of git. 26 languages via tree-sitter. Built for coding agents.

Entity-level git merge driver. Resolves false conflicts git invents when independent agents edit the same file. ~95% reduction vs. line-based merge.

Atuin is a command-line tool that replaces standard shell history with a searchable, encrypted SQLite database. By hooking into shell initialization scripts, it provides an interactive, keyboard-driven interface for real-time command filtering and retrieval. The platform ensures data privacy through a client-side encryption layer, securing sensitive history and configuration data before it is synchronized across multiple machines. Beyond history management, Atuin functions as an executable documentation platform that enables teams to create and share interactive runbooks. These documents use

Improved power settings for Windows

🔥 n01d-forge - Secure Cross-Platform Image Burner with Encryption | LUKS, VeraCrypt, Secure Erase, Hash Verification

Etcher is a cross-platform utility designed for creating bootable media by flashing raw disk images onto USB drives and SD cards. It functions as a desktop application that provides a graphical interface for low-level storage device management, ensuring data integrity through built-in validation during the writing process. The application utilizes a unified interface layer to map high-level commands to native system utilities, allowing it to operate consistently across different operating systems. It employs a stream-based data pipeline to pipe image contents directly to storage media, which

The #1 open-source Android GNSS/GPS test program

Easily configure macOS security settings from the terminal.