Flecs is a high-performance Entity Component System (ECS) framework for games and simulations, written in C99 with a C++17 wrapper. It provides a data-oriented storage model where entities are stored in archetype tables with component columns, enabling cache-efficient iteration. The framework includes a powerful query language with support for relationships, inheritance, traversal, grouping, and sorting. It features an extensive addon system covering systems (pipelines), observers, prefabs, reflection/meta, JSON serialization, an embedded scripting language (Flecs Script) with async/await, a REST API with an HTTP server, statistics/metrics, alerts, and more. Flecs has zero external dependencies and is designed for lockless multi-core scheduling. It is used in commercial games and has a large ecosystem of examples and community bindings. Architecture: The library is modular with a core C API and optional addons compiled via preprocessor flags. The C++ API provides a fluent builder pattern for constructing entities, systems, queries, and observers. Key entry points include ecs_init/flecs::world for world creation, ecs_progress for running the game loop, ecs_insert for entity creation, ecs_system for defining systems, ecs_query for cached queries, and ecs_script for running Flecs Script files. Data flows involve creating entities with components, which are stored in tables; systems iterate over matching entities each frame; observers react to component changes; and the script engine allows runtime entity manipulation. External dependencies: None. Flecs is self-contained and uses only standard C library functions.
SunEditor is a fully-featured, vanilla JavaScript WYSIWYG HTML editor library designed for modern browsers. It provides a rich text editing experience with extensive formatting options (inline, block, lists, tables, media embedding), multiple display modes (classic, inline, balloon), and a plugin architecture that supports dropdowns, modals, commands, browsers, and input fields. The editor is built around a clean dependency injection kernel, a reducer-based event handling system for keyboard and input events, and a modular structure for UI components (toolbar, menu, controllers) and file management. It includes built-in plugins for images, videos, audio, drawing, math expressions, autocomplete, slash commands, table editing, code view, markdown preview, and document layouts (A4 page breaks). The codebase is extensively tested with unit, integration, and e2e tests (Playwright), and follows strict architectural rules enforced by dependency-cruiser. It exports TypeScript definitions, supports internationalization (20+ languages), and integrates with popular frameworks via official React/Vue wrappers. The library is distributed via npm and CDN, and demonstrates a high level of engineering craftsmanship in its event system, DOM manipulation utilities, and plugin lifecycle management.
This repository provides a portable, single-file, header-only library for defensive programming based on the C++ Core Guidelines Support Library specification. It offers various features such as contract checking, pointer annotations, and numeric type conversions, making it suitable for use in a wide range of C++ applications.
This is a Go library for detecting the MIME type of files using magic number signatures. It implements a hierarchical detection tree rooted at 'application/octet-stream', allowing precise identification of over 200 file formats without any external dependencies. The library provides three detection entry points (byte slice, reader, file path) and supports concurrency via atomic and mutex locks. It includes custom parsers for CSV, JSON, OLE2/CDF, and MP3 frames, all optimized for performance and zero-copy where possible. The codebase is extensively tested with unit tests, fuzzing, and benchmarks, and is actively maintained with CI/CD, code scanning, and dependency automation. It is a standalone library with no runtime dependencies beyond the Go standard library.
WAT is a zero-dependency Python library for deep runtime inspection of objects. It provides a single `wat` object that can be used via `wat / obj`, `wat(obj)`, or `obj | wat` to display the object's type, value, attributes, methods, signatures, docstrings, source code, and more. The library supports a rich set of modifiers (short, long, dunder, code, caller, public, all) that can be chained fluently. It also offers `wat.locals` and `wat.globals` to inspect variable scopes. A notable feature is the ability to load the entire inspector without installation via a base64-compressed snippet or even a single Unicode glyph, making it extremely portable for debugging in any Python environment. The codebase is a single well-structured module with comprehensive test coverage, demonstrating solid Python engineering practices including operator overloading, AST manipulation for minification, and careful handling of edge cases in object introspection.
BYOB (Build Your Own Botnet) is an open-source post-exploitation framework that provides a command-and-control (C2) server, a custom payload generator, and a suite of post-exploitation modules. It is designed for security researchers and developers to simulate botnet operations for educational purposes. The system consists of a console-based C2 server (Python) and a Flask-based web GUI for managing sessions, payloads, and exfiltrated data. The architecture follows a classic botnet pattern: clients (reverse TCP shells) connect to the C2 server, authenticate via Diffie-Hellman key exchange with AES-256-CBC encryption, and receive tasks (modules) that are remotely loaded and executed. Modules include keylogging, screenshot capture, privilege escalation, packet sniffing, port scanning, persistence mechanisms, and interaction with iCloud/Outlook. The web GUI offers a dashboard, payload generator, terminal interface, and file management. The codebase shows signs of significant duplication (identical modules exist in both the core and web-gui directories) and relies on heavily outdated third-party frontend libraries (CKEditor 2013, FullCalendar 2014, CodeMirror addons). The project appears to be in a stale maintenance state with known incomplete features (e.g., unencrypted remote imports, limited transport types). While the core concepts (remote module loading, encrypted C2, cross-compilation) are technically interesting, the implementation quality is uneven, with Python 2/3 compatibility hacks, security-sensitive patterns (exec usage, SimpleHTTPServer without auth), and a large volume of unused/purely vendored assets inflating the repository. It is best treated as a reference architecture for botnet design rather than production-ready software.