Open-source alternatives to Redux Devtools Extension

React Native Debugger is a standalone developer application for inspecting and debugging JavaScript runtimes in mobile applications built with React Native. It provides a dedicated interface to monitor the runtime state, network requests, and console logs of a remote mobile environment. The tool integrates specialized inspectors for Redux state management and GraphQL client debugging, allowing for time-traveling state transitions and the analysis of queries, mutations, and local cache. It also features a component hierarchy viewer for visualizing and modifying UI properties in real time. Bro

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

Redux is a global state management library and predictable state container for JavaScript applications. It implements a store pattern that maintains the entire application state as a single source of truth, ensuring consistent behavior across different components and environments. The library relies on a unidirectional data flow where state updates follow a strict one-way cycle. This is achieved through a system of discrete actions, pure-function reducers, and a centralized store to ensure that state transitions remain predictable and traceable. The framework includes capabilities for monito

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

Vue-devtools is a browser debugger and state inspector for Vue.js applications. It functions as a frontend framework utility integrated into the browser to analyze the structure and internal state of web applications during development. The tool provides capabilities for component analysis and state inspection, allowing for the examination of component hierarchies and real-time data flow. It enables the monitoring of reactivity and the organization of running applications within the browser developer tools pane. The project covers a broader debugging workflow focused on observability and the

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

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

Livestore is a reactive state management framework that utilizes a local SQLite database to store and synchronize application data. It provides an event-sourced state store that processes typed events through materializer functions to derive and persist application state. The framework implements offline-first data synchronization using a push-pull engine and append-only event logs to maintain consistency between clients and servers. It includes a real-time presence system for tracking user activity and shared session status across connected clients. The system covers a broad capability surf

This project is a Redux state logger and console debugging tool. It functions as middleware for the Redux dispatch pipeline, acting as a state transition tracker that records actions and state changes directly to the browser console. The tool allows for the interception of actions to log timing, payloads, and state transitions. It provides capabilities to filter specific actions using predicate functions to reduce noise and transform complex state or immutable data into readable formats for easier inspection. The utility includes options for customizing console output through timestamps, col

OpenReplay is a session replay platform and frontend debugging suite designed to record and play back user browser sessions. It functions as a user behavior monitoring system that captures interaction patterns and technical metadata to identify conversion issues and revenue loss. The platform is distinguished by its self-hosted infrastructure model, allowing the recording and analytics pipeline to be deployed on private servers for full control over data residency. It also includes a browser co-browsing tool for real-time screen sharing and direct communication to provide immediate technical

ReSwift is a unidirectional data flow framework for Swift applications that centralizes state management within a single store. It ensures predictable and traceable updates by requiring all state modifications to occur through explicit actions processed by reducer functions. The library includes a state time travel debugger that records and replays sequences of actions to reload or rewind the application state. It also provides an asynchronous action dispatcher to handle side effects and network requests while maintaining synchronized state updates. The framework covers a broad surface of st

AutoJs6 is an Android automation framework and JavaScript runtime designed to automate user interface interactions and system tasks on mobile devices. It functions as a UI automator that inspects screen hierarchies and manipulates on-screen controls via selectors to automate manual workflows. The project includes an Android script compiler that bundles automation scripts into standalone APK files for distribution. It also provides a remote debugging tool that creates a network-based bridge between a mobile device and a desktop IDE for writing and testing scripts. The framework covers a broad

Jotai is a state management library for React applications that utilizes an atomic model to handle data. It organizes application state into small, independent units called atoms, which automatically track dependencies and trigger granular updates to components. By building state through these composable primitives, the library ensures that only the necessary parts of an application re-render when data changes. The library distinguishes itself through its flexible approach to state composition and asynchronous data handling. It integrates promises directly into the state model, allowing devel

Torch7 is a scientific computing environment and tensor computation library used for deep learning research and numerical analysis. It functions as a Lua-based framework for training neural networks and learning agents, providing a toolkit for implementing architectures and training through reinforcement learning algorithms. The project is distinguished by its tight integration with C, utilizing a binding layer to map high-level scripting to low-level C structures for direct memory access. It supports hardware-accelerated computation by offloading linear algebra and convolution operations to

Flecs is a high-performance entity component system framework and data-oriented programming library. It serves as a simulation engine core and game engine architecture tool, decoupling state from behavior by separating entities, components, and systems. The framework features a runtime reflection layer for dynamic data inspection and a built-in scripting system for defining entity behavior without recompilation. It also includes a network interface and REST API for remote simulation administration and state querying. The library covers a broad surface of simulation capabilities, including ar

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

rr is a deterministic record and replay framework and reverse debugger for Linux processes. It provides a deterministic execution environment that captures program execution, allowing bugs and crashes to be reproduced exactly through replay. The tool enables reverse program execution, allowing a developer to move the program counter backward through recorded history to trace a bug from its effect back to its source. It utilizes a recording mechanism that ensures a process run can be replayed with identical memory and register states. The framework covers low-level software analysis and nativ

redux-thunk is a middleware for Redux that enables action creators to return functions instead of objects. This allows the store to handle asynchronous side effects and manage complex workflows and delayed state updates. The middleware acts as a side effect orchestrator that intercepts dispatched functions to execute asynchronous logic, such as API calls. It also functions as a dependency injection layer, allowing external services or mock objects to be passed into action creators to improve modularity and testability. The project provides capabilities for orchestrating control flow and coor

Findomain is a subdomain discovery tool and DNS resolver used for mapping an organization's external attack surface. It functions as a DNS infrastructure analyzer that searches for registered subdomains associated with a root domain to uncover undocumented infrastructure and services. The project includes an attack surface monitor that tracks changes to subdomains over time, using differential state monitoring to identify newly created or deleted assets. It provides real-time alerting via webhooks when changes in the monitored domain surface are detected. The system performs high-speed DNS r

UnityExplorer is a specialized suite of runtime tools for memory exploration, asset exporting, camera control, and real-time object property inspection within Unity applications. It functions as a runtime debugger and engine inspector, providing an interface to locate singletons, static classes, and active scene objects in memory. The project distinguishes itself with a C# runtime debugger that allows for the execution of custom scripts and the patching of method behavior. It includes a dedicated asset exporter for saving textures and audio clips as PNG and WAV files, as well as a freecam too

This project is a community feedback platform and feature request tracker designed to collect and organize user suggestions through threaded discussions and public voting. It functions as a user engagement portal that manages asynchronous interactions between development teams and their end-user communities. The system provides a public product roadmap that communicates planned features and product direction. It integrates user voice into the development process by linking finalized, community-voted requests to a transparent tracking board. The platform covers community engagement management

Slate is a customizable rich text editor framework that treats documents as a recursive tree of nodes. It functions as a schema-based, state-driven system designed to enforce structural constraints and manage nested components within a structured document model. The framework utilizes a plugin-based architecture to extend editor functionality, allowing for the injection of custom logic into the rendering and transformation pipeline. It supports real-time collaborative editing by synchronizing document operations across multiple users. The system covers a broad range of capabilities, includin

open62541 is an open-source implementation of the OPC Unified Architecture standard, providing a complete stack for industrial automation and data exchange. It functions as both an OPC UA server and client, enabling the creation of an object-oriented address space to model physical industrial assets and their relationships. The project is designed for versatility across diverse hardware, offering a C99 library that can be deployed to both cloud servers and resource-constrained embedded environments. It distinguishes itself through a pluggable network layer and interface-based security backend

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

This is a personal portfolio website that uses scroll position to drive complex SVG scene animations, creating an interactive storytelling experience. The project is built around a scroll-synchronised animation controller that maps user scrolling to a timeline of interpolated state changes across a directed graph of visual elements, enabling fluid scene transitions. The site features a real-time animation state debugger that overlays a live HUD showing timing, active elements, and scene breakdown, with console commands for scene jumping and state export. It also includes a gradient-preserving

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

SerpentAI is a game AI development kit and computer vision framework designed for building autonomous agents that interact with video games. It serves as a game input automation tool and a machine learning model integration engine, allowing developers to create agents that perceive game states and execute actions. The framework utilizes a plugin-based agent architecture to provide modular extensions for game-specific logic and behaviors. It features a specialized system for training, bundling, and deploying machine learning classifiers to recognize visual contexts and game states in real time