Awesome GitHub RepositoriesBase64 Encoding and Decoding

This project provides the official specification for ULIDs, which are 128-bit identifiers that combine a millisecond-precision timestamp and random data. These identifiers are designed to be lexicographically sortable, ensuring that they maintain a strict chronological sequence for database indexing and time-based sorting. The specification defines a standard for binary-to-string serialization using a Crockford-inspired Base32 alphabet. This encoding is intended to produce human-readable strings while excluding ambiguous characters to prevent transcription errors. The technical standards cov

This is a collection of classic computer science algorithms and data structures implemented from scratch in JavaScript. The project provides reference implementations of fundamental concepts including sorting algorithms, binary search, linked lists, and binary search trees, all built as standalone pure functions with no external dependencies. The implementations cover a range of data structures, including singly-linked, doubly-linked, and circular linked lists with full traversal and mutation operations, as well as binary search trees supporting insertion, deletion, and search. Sorting algori

This repository contains the HTML specification, which defines the core standards for web page structuring, content organization, and document rendering. It establishes the fundamental algorithms for state-machine-based tokenization, tree construction for the document object model, and origin-based security isolation. The specification provides a framework for defining custom elements with independent lifecycles and registries. It also details the requirements for cross-document communication, session history management, and the synchronization of interface properties with content attributes.

Any-rule is a multi-platform regular expression tool that provides a curated catalog of over 70 ready-to-use patterns for validating and extracting common data formats. The project separates its static regex collection from editor-specific plugins, allowing the same pattern library to be accessed through VS Code, IntelliJ IDEA, Alfred Workflow, and a web interface. The tool enables keyword-based pattern retrieval, letting users search for the correct regex by typing descriptive terms rather than remembering exact syntax. It covers a broad range of validation needs including email addresses, U

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

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

sjcl is a JavaScript cryptography library providing a collection of primitives for encryption, hashing, and encoding within a web browser. It functions as an AES symmetric encryption tool, a cryptographic hashing library, and a Base32 data encoder. The project provides implementations for the Advanced Encryption Standard to secure data through symmetric key encryption and decryption. It also enables the generation of fixed-length data fingerprints to verify information integrity and authenticity. The library covers a broader range of security capabilities, including client-side data hashing,

This project is a Go shell scripting library and framework designed for writing automation scripts and CLI tools. It provides a concurrent data pipeline system for chaining sources, filters, and sinks to process text and JSON streams. The library distinguishes itself through a comprehensive toolkit for shell-like operations, including a text processing engine for regular expression filtering and frequency analysis, a filesystem utility toolkit for recursive search and path manipulation, and an integrated HTTP client wrapper for building data pipelines that fetch web content. The capability s

Proxyman is a cross-platform HTTP debugging proxy that captures, inspects, and modifies HTTP, HTTPS, and WebSocket traffic. It functions as a man-in-the-middle proxy, decrypting SSL/TLS traffic to allow real-time inspection and modification of encrypted requests and responses. The tool is designed for debugging web and mobile applications, with capabilities for API mocking and simulation, scriptable traffic modification, and team collaboration on network logs. What distinguishes Proxyman is its deep integration with mobile and cross-platform development workflows. It provides automated certif

Osmedeus is a security workflow orchestration engine that coordinates AI agents, shell commands, and scanning tools through declarative YAML pipelines. It functions as a distributed security scanner, a declarative workflow automator, and an AI agent framework for security, enabling automated multi-step security analysis with conditional branching, parallel execution, and distributed workers. The engine distinguishes itself through a hybrid runner model that executes workflow steps on the local host, inside Docker containers, or over SSH to remote machines, selected per step or module. It supp

Valhalla is an open-source routing engine that calculates optimal paths and travel times using OpenStreetMap data. It is built around a tiled routing graph framework, allowing map data to be organized into small geographic tiles for efficient regional updates and offline routing capability. The project distinguishes itself through a multimodal routing server that combines automobile, pedestrian, bicycle, and public transit modes into single journeys. It includes a GPS trace matching engine to align noisy coordinates to the most probable road network paths and an isochrone and matrix generator

tbox is a multi-platform C standard library and toolkit designed for portable software development. It provides a core foundation for low-level system programming through a collection of system primitives, data structures, and memory management tools. The project includes a coroutine framework for cooperative multitasking and asynchronous logic, a data structure library featuring generic containers with a consistent iterator interface, and a memory management toolkit for pool allocation and debugging of heap overflows and leaks. It also provides a network and serialization toolset for handlin

Tbox ist eine umfassende Sammlung von Low-Level-Utility-Bibliotheken und Toolkits für die portable C-Entwicklung. Sie bietet eine plattformübergreifende C-Utility-Bibliothek, die als leichtgewichtiger Ersatz für Standardbibliotheken dient und optimierte Speicherverwaltung sowie Systemabstraktionen bietet, um die Hardware-Kompatibilität über verschiedene Betriebssysteme hinweg sicherzustellen. Das Projekt zeichnet sich durch ein spezialisiertes Framework standardisierter Datencontainer aus, darunter Hash-Tabellen, Vektoren und verkettete Listen mit integrierter Suche und Sortierung. Es bietet zudem ein dediziertes Toolkit für Netzwerk und Serialisierung, das HTTP-Anfragen, SSL-Verschlüsselung und Datenkonvertierung zwischen JSON-, XML- und Binärformaten verwaltet. Die Kompetenzoberfläche erstreckt sich auf die gleichzeitige Aufgabenausführung mittels Coroutines und Thread-Pools, vereinheitlichte Systemaufruf-Abstraktionen und 2D-Grafik-Rendering. Zusätzliche Funktionalitäten umfassen kryptografische Hash-Generierung, Ausführung regulärer Ausdrücke, Festkomma-Arithmetik und Speicherpool-Verwaltung. Das Toolkit enthält zudem spezialisierte Tools für das Objective-C-Methoden-Tracing auf iOS und macOS sowie eine virtuelle Maschine, die in der Lage ist, x86-Skriptanweisungen zu verarbeiten.

Dieses Projekt ist eine Implementierung des ULID-Standards in der Programmiersprache Go. Es bietet Tools zur Generierung universell eindeutiger, lexikographisch sortierbarer Identifikatoren, die Millisekunden-Zeitstempel mit Zufallsdaten kombinieren. Die Bibliothek stellt sicher, dass Identifikatoren durch alphabetische Sortierung die chronologische Reihenfolge beibehalten. Sie enthält einen monotonen Generator, um zu garantieren, dass mehrere Identifikatoren, die innerhalb derselben Millisekunde erstellt wurden, in einer streng aufsteigenden Sequenz produziert werden. Das Projekt deckt die Generierung eindeutiger Identifikatoren und die Optimierung von Datenbank-Primärschlüsseln ab. Es bietet zudem ein Command-Line-Interface zur Generierung neuer Identifikatoren und zum Extrahieren von Zeitstempelinformationen aus bestehenden Identitäts-Strings.

Opal ist ein Ruby-Frontend-Framework und Compiler, der Ruby-Quellcode in JavaScript übersetzt. Er fungiert als Web-Laufzeitumgebung, die die Entwicklung clientseitiger Webanwendungen unter Verwendung von Ruby anstelle von JavaScript ermöglicht. Das Projekt enthält eine Ruby-HTML-Template-Engine, die Ruby-Code auswertet, der direkt in Markup-Dateien eingebettet ist. Es integriert sich zudem in JavaScript-Umgebungen, indem es Kernbibliotheken und Abhängigkeiten in einen Distributions-String für die Ausführung in einem Webbrowser bündelt. Das System bietet Funktionen für die Kompilierung von Ruby zu JavaScript sowie die Fähigkeit, Base64-Daten zu kodieren und zu dekodieren.

orpc is a contract-first API development framework for TypeScript that starts with a shared contract definition and generates type-safe clients and servers from that single source of truth. It guarantees end-to-end type safety, meaning inputs, outputs, errors, and streaming data are all checked at compile time across the client–server boundary. What distinguishes orpc from typical RPC frameworks is its ability to export contracts as OpenAPI specifications, to optimize server-side rendering by calling API handlers directly inside the server process, and to support real‑time bidirectional commu

gomail ist eine Go-SMTP-Client-Bibliothek, die zum Verfassen und Senden von E-Mail-Nachrichten über SMTP-Server verwendet wird. Sie fungiert als E-Mail-Composer und MIME-E-Mail-Serialisierer, der komplexe E-Mail-Objekte und binäre Anhänge gemäß Internet-Nachrichtenstandards in Byte-Streams konvertiert. Die Bibliothek enthält einen SMTP-Verbindungsmanager, der die Server-Session-Authentifizierung handhabt und mehrere Nachrichten über eine einzige verschlüsselte Verbindung überträgt, um die Netzwerklatenz zu reduzieren. Sie unterstützt die sichere E-Mail-Zustellung durch verschlüsselte Datenübertragung, um sensible Informationen während des Transits zu schützen. Das Projekt deckt das Verfassen von E-Mails ab, einschließlich der Erstellung von Multipart-Nachrichten mit Klartext- und HTML-Versionen, benutzerdefinierten Headern und externen Dateianhängen. Es bietet die Infrastruktur für MIME-konforme Serialisierung und den Transport von Nachrichten über das Standard-Mail-Transfer-Protokoll.

Notepad4 is a lightweight, native Windows text editor built on the Scintilla editing component and rendered through the Win32 API. It is designed as a direct replacement for the default Windows Notepad, offering a faster, feature-rich editing experience with system-level integration such as Explorer context menu registration, taskbar jump list support, and the ability to intercept system notepad requests. The editor distinguishes itself with a context-sensitive completion engine that filters suggestions based on preceding punctuation and document content, alongside CPU-optimized encoding dete

This project is a technical study and analysis guide focused on the internal architecture of Node.js. It provides an in-depth examination of the runtime, focusing on how the engine manages memory handles, executes asynchronous operations, and implements core module logic. The guide specifically analyzes the integration of native C++ classes and functions into JavaScript and documents the behavior of the libuv event loop. It includes detailed references for optimizing performance by identifying V8 compiler bailouts and profiling execution to improve resource efficiency. The material covers a

uds is a binary-to-text storage utility and cloud document storage manager. It converts binary files into encoded text chunks to facilitate storage and retrieval within cloud document platforms, specifically to bypass storage quotas in services like Google Drive. The system utilizes base64 encoding and chunk-based splitting to divide large binary files into smaller segments that fit within the character limits of individual cloud documents. It reassembles these original files through sequential block reconstruction. The project covers cloud file management, including the ability to list, sea