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 是一个用于便携式 C 开发的综合底层实用库和工具包集合。它提供了一个多平台 C 实用库，作为标准库的轻量级替代品，提供优化的内存管理和系统抽象，以确保跨不同操作系统的硬件兼容性。 该项目通过一个标准化的数据容器框架脱颖而出，包括带有集成搜索和排序功能的哈希表、向量和链表。它还提供了一个专门用于网络和序列化的工具包，管理 HTTP 请求、SSL 加密以及 JSON、XML 和二进制格式之间的数据转换。 能力范围扩展到通过协程和线程池进行的并发任务执行、统一的系统调用抽象和 2D 图形渲染。其他功能包括加密哈希生成、正则表达式执行、定点算术和内存池管理。 该工具包还包括用于 iOS 和 macOS 上 Objective-C 方法追踪的专用工具，以及能够处理 x86 脚本指令的虚拟机。

这是一个 Go 语言实现的 ULID 标准。它提供用于生成通用唯一、字典序可排序标识符的工具，这些标识符结合了毫秒级时间戳和随机数据。 该库确保标识符通过字母顺序保持时间顺序。它包括一个单调生成器，以保证在同一毫秒内创建的多个标识符以严格递增的序列产生。 该项目涵盖了唯一标识符生成和数据库主键优化。它还提供了一个命令行界面，用于生成新标识符并从现有标识字符串中提取时间戳信息。

Opal 是一个 Ruby 前端框架和编译器，将 Ruby 源代码转换为 JavaScript。它作为一个 Web 运行时，允许使用 Ruby 而不是 JavaScript 开发客户端 Web 应用。 该项目包含一个直接在标记文件中评估嵌入式 Ruby 代码的 Ruby HTML 模板引擎。它进一步通过将核心库和依赖项打包成用于在 Web 浏览器中执行的分发字符串，与 JavaScript 环境集成。 该系统提供 Ruby 到 JavaScript 的编译功能以及编码和解码 Base64 数据的功能。

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 是一个 Go SMTP 客户端库，用于通过 SMTP 服务器编写和发送电子邮件。它作为一个电子邮件消息编写器和 MIME 电子邮件序列化器，根据互联网消息标准将复杂的电子邮件对象和二进制附件转换为字节流。 该库包含一个 SMTP 连接管理器，处理服务器会话身份验证并通过单个加密连接传输多条消息，以减少网络延迟。它通过加密数据传输支持安全电子邮件发送，以保护传输过程中的敏感信息。 该项目涵盖电子邮件编写，包括创建带有纯文本和 HTML 版本的复合消息、自定义标头和外部文件附件。它为 MIME 兼容的序列化和通过标准邮件传输协议传输消息提供了基础设施。

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

这是一个技术研究和分析指南，专注于 Node.js 的内部架构。它提供了对运行时的深入检查，重点关注引擎如何管理内存句柄、执行异步操作以及实现核心模块逻辑。 该指南专门分析了将原生 C++ 类和函数集成到 JavaScript 中的过程，并记录了 libuv 事件循环的行为。它包括通过识别 V8 编译器回退和分析执行以提高资源效率来优化性能的详细参考。 该材料涵盖了广泛的内部系统，包括用于 TCP 和 UDP 的底层网络编程、用于集群和子进程的进程管理，以及非阻塞 I/O 的机制。它还探讨了缓冲区、流和原生到脚本绑定层的源代码级实现。

uds 是一个二进制转文本的存储工具和云文档存储管理器。它将二进制文件转换为编码后的文本块，以便在云文档平台中进行存储和检索，主要用于绕过 Google Drive 等服务的存储配额限制。 该系统利用 Base64 编码和分块技术，将大型二进制文件拆分为适合云文档字符限制的小段，并通过顺序块重组来还原原始文件。 该项目涵盖了云文件管理功能，包括列出、搜索和删除已存储文件。它还提供了批量处理功能，支持使用模式和通配符上传或下载多个文件，并包含用于格式化人类可读文件大小的实用工具。