Open-source alternatives to Vue Devtools

Entitas-CSharp is a data-oriented architectural framework for managing application state and logic in C# and Unity environments. It implements the Entity Component System pattern to separate raw data components from the logic systems that process them. The framework includes a code generator that automatically produces type-safe boilerplate classes and methods at build time. It also provides a visual state inspector for examining entities and components in real time within the Unity editor. The library covers data-oriented programming and game state debugging, utilizing a memory-efficient ap

PakePlus is a web-to-native converter and application packager that transforms website URLs or static directories into standalone native desktop and mobile applications. It provides a native browser shell to wrap web content, acting as a cross-platform application shell for Android, iOS, and various desktop environments. The project distinguishes itself through a cloud-based app packager, utilizing remote build pipelines to compile application binaries without requiring a local development environment. It includes a JavaScript injection tool and a system-level API bridge, allowing users to ad

DearPyGui is a GPU-accelerated, immediate-mode graphical user interface framework for Python. It provides a high-performance toolkit for building interactive desktop applications by leveraging native hardware-accelerated rendering backends across multiple operating systems. By utilizing an immediate-mode execution model, the library offers direct control over the rendering loop and element state, enabling the creation of responsive, dynamic interfaces. The framework distinguishes itself through its ability to handle complex, high-frequency visual updates, making it suitable for real-time data

Telescope is a debugging dashboard and development tool for Laravel applications that provides a web interface for monitoring requests, exceptions, database queries, and logs. It functions as a PHP application monitor and diagnostic assistant, tracing the execution lifecycle of the system to identify and resolve bugs. The tool distinguishes itself by offering specialized profilers for SQL queries and Redis commands, alongside an in-browser preview system for outgoing emails. It also includes a dedicated auditing system for console commands and authorization gate checks to verify permission lo

Redux DevTools is a state management debugger and visualizer for Redux applications. It provides a set of interfaces for inspecting state trees, monitoring real-time state changes, and dispatching actions. The project features a state time travel debugger that allows for rewinding and replaying sequences of dispatched actions to reproduce specific application states. It includes a remote state monitor to track state changes from sources in environments where local browser access is unavailable. The toolset covers action history replay, state change inspection, and hot-reload development work

Reactotron is a desktop application for inspecting the state, network traffic, and logs of React and React Native applications. It serves as a specialized debugging interface for monitoring network requests, performance metrics, and state transitions in JavaScript and mobile application frameworks. The tool provides a real-time interface for tracking data flow and dispatching actions to test different state transitions. It includes a network traffic monitor to intercept and display API requests and responses, as well as a performance analysis tool for capturing execution data and measuring op

Reactotron is a desktop-based development environment designed for inspecting, monitoring, and manipulating mobile and web applications in real time. It functions as a centralized hub that connects to a running application via a persistent WebSocket connection, allowing developers to observe internal state, network traffic, and console output without manual instrumentation. The tool distinguishes itself through a modular plugin architecture that enables custom debugging commands and specialized extensions. It provides advanced diagnostic capabilities, including the ability to overlay design m

FLEX is an in-app debugging tool and runtime exploration environment for iOS applications. It provides an integrated suite for inspecting and modifying the internal state of a running process without the use of an external debugger. The project includes a runtime inspector for browsing the memory heap and calling methods dynamically, alongside a view hierarchy debugger for visualizing and adjusting layout structures in real time. It features a network traffic monitor to log and analyze HTTP request history, headers, and responses, as well as a sandbox manager for viewing and editing files and

Stetho is a debug bridge that connects Android applications to Chrome Developer Tools. It allows for the real-time inspection of network traffic, internal application state, and the user interface layout directly within a desktop browser. The project provides specialized inspectors for analyzing Android-specific components. This includes a network inspector for capturing HTTP requests and responses, an SQLite database browser for querying local storage, and a view hierarchy inspector for mapping UI elements and styles. Additional capabilities cover runtime execution via an embedded JavaScrip

SvelteStorm is a specialized integrated development environment built for creating, editing, and debugging Svelte applications. The workspace provides a desktop code editing environment equipped with syntax highlighting, a file directory tree explorer, split-screen document viewing, code search tools, and an integrated terminal for executing shell scripts and terminal commands. The environment includes dedicated debugging and monitoring tools that generate real-time component hierarchy graphs, track live state values, and record application states to allow stepping backward and forward throu

Reactotron is a desktop application and collection of developer tools designed for monitoring runtime errors, analyzing network requests, and inspecting state within JavaScript and React environments. It serves as a debugger for both React JS and React Native projects, providing a visual interface to monitor internal application state and performance. The tool provides specialized inspectors for React Native mobile applications and React web applications. It allows for the real-time tracking of state changes and the dispatching of actions to a state manager to test different application scena

Tweakpane is a web GUI control panel and JavaScript parameter debugger used for inspecting frontend state and monitoring real-time variable changes. It provides a graphical interface for adjusting application parameters and tracking values as they change during program execution. The project allows for the creation of interactive inputs and read-only value monitors that bind directly to data variables. It organizes these controls through a hierarchical layout of folders and tabs and supports the serialization of control panel configurations and parameter states into JSON files for persistence

Delve is a command-line debugger designed for programs written in the Go programming language. It provides an interactive interface for runtime analysis, allowing developers to control program execution, inspect memory and variable states, and navigate call stacks to identify logic errors. The tool distinguishes itself through deep integration with the Go runtime, specifically by providing goroutine-aware stack unwinding and the ability to manage concurrent execution threads. It utilizes a client-server protocol to decouple the debugger engine from the user interface, enabling both local and

DoKit is a frontend development debugging toolset designed for web and mobile applications. It provides a suite of utilities for intercepting network traffic, mocking API responses, inspecting UI hierarchies, and monitoring mobile app performance. The project is distinguished by its focus on hybrid app inspection, allowing developers to execute scripts within web views and browse internal application sandboxes. It includes a visual UI audit tool with alignment rulers and color pickers to verify that interfaces match design specifications, as well as a diagnostic system that tracks CPU usage a

douyuEx is a Tampermonkey userscript and web interface enhancer designed to modify the functionality and appearance of a specific live streaming platform. It acts as a comprehensive automation tool and browser extension that provides a suite of utilities for managing live stream interactions, enhancing video playback, and analyzing streaming data. The project distinguishes itself through deep automation of platform-specific tasks, such as automated account check-ins, treasure box and gift packet claiming, and keyword-based chat responses. It also provides advanced interaction tools, including

Chainlit is a Python framework designed for building and deploying interactive, stateful conversational AI interfaces. It provides a backend-driven platform that connects language models and agent frameworks to a web-based chat frontend, managing the complexities of session state, message history, and real-time communication. The framework distinguishes itself by offering a component-based UI builder that allows developers to inject interactive widgets, rich media, and data visualizations directly into the chat stream. It supports the visualization of complex agent workflows, enabling users t

This project is a web content filtering tool designed to remove low-quality or spammy Chinese language websites from Google search results. It functions by identifying and hiding results from unreliable domains to improve the relevance of discovered content. The tool employs pattern-matching domain filtering and curated blocklists to identify unwanted websites. It uses browser extension content scripting to scan the search engine results page and apply CSS-based element hiding to the parent containers of blocked sites.

Moto is a cloud service mockery framework and API mock server that simulates AWS infrastructure locally. It allows developers to test cloud-dependent code and verify infrastructure-as-code templates without deploying real resources or incurring costs. The project functions as an SDK interceptor that can patch existing service clients to redirect requests to a local mock environment. It can also be run as a standalone HTTP server, enabling any programming language to interact with the simulated endpoints. The framework covers a vast array of simulated capabilities, including data storage, com

Notion Enhancer is a customization framework and desktop application modifier designed to inject JavaScript and CSS into Notion. It functions as a plugin system and theme engine that modifies the interface and core application behavior. The project enables the overriding of internal software logic and the injection of custom scripts to change default behaviors. It includes a theme engine for overriding CSS variables to apply custom visual schemes and provides support for right-to-left text direction. The framework covers a range of capabilities including workflow automation through user inpu

BrowserSync is a web development synchronization tool and live reload server. It functions as a local static web server, a reverse proxy server for existing sites, and a browser testing orchestrator that coordinates page state across different browsers and physical devices. The tool is distinguished by its ability to mirror user interactions, such as clicks, scrolls, and form inputs, in real time across all connected devices. It also provides a web-based device control interface and the capability to create public URL tunnels for remote testing of local sites. The system covers a broad range

Nativefier is a cross-platform desktop application builder that converts web URLs into standalone executables for Windows, macOS, and Linux. It functions as a web-to-desktop application converter, wrapping web pages in a dedicated browser window with its own launcher and identity. The tool uses an Electron-based wrapper to embed websites within a Chromium browser instance and Node.js runtime. It differentiates itself through automatic branding, extracting application names and icons from target websites to configure the desktop wrapper. The system provides mechanisms for custom styling and b

This project is a browser automation toolset and Model Context Protocol server that connects large language models to live browser sessions. It provides a web debugging interface and a quality auditor to facilitate the analysis of document object model structures and browser logs. The system implements a bridge that streams diagnostics into AI-powered editors, allowing for the automated identification of web bugs. It features a data sanitization pipeline that removes cookies and sensitive headers to prevent private information leakage during the analysis process. The toolset covers a range o

This project is a reactive state management library designed for Angular applications. It provides a centralized store that maintains a single immutable source of truth, ensuring that all application data transitions follow a predictable, unidirectional flow. The library implements the Redux pattern, utilizing discrete actions and pure functions to trigger state updates. It leverages observable streams to propagate these changes, allowing user interface components to bind reactively to specific slices of data. By isolating asynchronous operations and external interactions into independent act

This project is a curated collection of technical questions and answers designed to assist developers in preparing for software engineering interviews within the iOS ecosystem. It serves as a structured study tool for evaluating proficiency in mobile application architecture, system design, and core programming concepts. The repository provides a comprehensive reference for essential development topics, including memory management, concurrency, design patterns, and data persistence. By covering these foundational areas, it enables users to review common industry interview subjects and test th

bilibili-helper-o is a browser extension designed to modify the Bilibili web interface and enhance media playback and download capabilities. It functions as a playback enhancer and web interface modifier that injects custom scripts into the platform to customize the video player and layout. The project provides tools to remove regional and account-based viewing restrictions on Bilibili content. It also includes a video downloader extension capable of extracting and saving video streams from the platform to local storage for offline archiving. These capabilities are implemented through networ

re-frame is a functional framework for building single-page applications in ClojureScript. It provides a centralized, immutable database that serves as the single source of truth for the entire application state, enforcing a strict unidirectional data flow where events trigger state transitions and subsequent view updates. The framework distinguishes itself through a reactive signal graph and an interceptor-based middleware pipeline. By treating application logic as a sequence of data-driven events and declarative side effects, it decouples business logic from the view layer. This architectur

source-map-explorer is a source map bundle analyzer that visualizes the space usage of bundled JavaScript files. It functions as a bundle size auditor and visualizer, using source maps to identify which original modules and files occupy the most space within a production bundle. The tool generates an interactive treemap to represent bundle composition and calculates compressed gzip sizes to estimate actual network transfer costs. It further serves as a code coverage mapper by overlaying execution data onto source maps to identify unused code segments that can be deferred or split. The utilit