Open-source alternatives to Cookieconsent

This project is a reference library and collection of practical code samples for building browser extensions using WebExtensions APIs. It provides implementation guides and functional examples for core extension components, including content scripts, background processes, and browser action popups. The repository focuses on demonstrating specific implementation patterns for browser UI customization and web page manipulation. It includes samples for creating sidebars, context menus, and options pages, as well as techniques for injecting scripts and styles to alter DOM elements and page appeara

EhSyringe is a browser translation extension and tag translation engine designed to replace website tags and content with localized versions. It functions as a dynamic content localizer and custom translation database client that maps original metadata tags to preferred languages to improve content discoverability on gallery websites. The project provides a search enhancement toolkit that enables cross-language content discovery and enhanced site search. This includes translation-aware autocomplete suggestions in search fields, the ability to perform searches via the address bar, and context-

Violentmonkey is a userscript manager extension and JavaScript injection framework. It allows users to install and manage custom scripts and CSS to modify the behavior and appearance of websites based on metadata-driven trigger conditions. The project functions as a cloud-synced script manager, backing up and synchronizing scripts across different devices using external cloud storage services. It also serves as a cross-origin request bridge, providing a communication layer that enables scripts to bypass the same-origin policy to fetch data. The tool covers a broad range of browser automation

Acra is an Android crash reporting framework and diagnostic data collector designed to detect failures and capture device diagnostics, system logs, and application state. It serves as an embeddable library for capturing and processing crash reports, providing a pipeline to send this data to custom backends or via email. The project features a plugin-based sender architecture that allows reports to be routed through HTTP endpoints, email clients, or proprietary backend implementations. It includes a user-controlled reporting system with preference toggles and interactive dialogs to manage user

Rudder Server is a customer data platform and event routing pipeline designed to collect, transform, and route customer event data from various sources to data warehouses and business tools. It functions as a customer identity resolver, linking identifiers from multiple sources to build a unified identity graph and comprehensive behavioral customer profiles. The system differentiates itself through reverse ETL capabilities, which push processed customer segments and audiences from data warehouses back into operational third-party applications. It also provides a containerized data plane for K

This project is an open-source identity provider and single sign-on platform that centralizes user authentication for multiple web applications and services. It functions as a multi-protocol authentication gateway, verifying user identities and issuing tokens through the CAS protocol as well as industry standards including SAML, OAuth2, and OpenID Connect. The system acts as a federated identity server, allowing authentication to be delegated to external third-party or corporate identity providers. It distinguishes itself through identity attribute governance, which manages which specific use

Countly is a self-hosted product analytics and engagement platform that tracks user behavior across mobile, web, and desktop applications. It collects and analyzes device properties, user actions, and session lifecycle data to understand engagement patterns, while also providing crash reporting, push notification delivery, and A/B testing capabilities. The platform is designed for privacy-first deployment, with built-in consent management and the ability to run entirely on private infrastructure. The platform distinguishes itself through its comprehensive feature set that combines analytics w

This project is a collection of reference implementations for vanilla web applications, interactive browser games, and core frontend development patterns. It consists of small web applications and tools built using standard HTML, CSS, and JavaScript without the use of external frameworks or libraries. The collection demonstrates various practical implementations, including browser-based mini games with arcade and word-guessing mechanics, as well as frontend interface prototypes. These examples cover the use of the native document object model for state manipulation and the implementation of i

Partytown is a library designed to offload resource-intensive third-party scripts to background web workers. By executing these scripts outside of the main thread, it prevents them from blocking the critical rendering path, thereby maintaining a responsive user interface and improving overall page load performance. The project functions as a web worker proxy library that synchronizes browser interfaces between the main thread and background environments. It uses proxy-based access and synchronous messaging to replicate global objects like the window and document, allowing scripts to interact

Reader is a digital content reader and browser-based document viewer. It functions as a digital library manager and content aggregator that collects articles and documents from various online sources into a single interface. The project utilizes a JSON-driven approach to organize and display hierarchies of digital documents. It incorporates a REST-based aggregation model to fetch reading materials and metadata from remote servers for a unified viewing experience. The application provides client-side rendering for digital texts and manages personal collections through a digital library system

This is the Chinese translation of The Modern JavaScript Tutorial, an open-source, community-driven project that teaches JavaScript from fundamentals to advanced topics based on the latest ECMAScript specification. The project covers the full JavaScript language, including object-oriented programming, and provides comprehensive instruction on browser programming, DOM manipulation, and client-side web development. The tutorial is structured as a multi-language translation framework, with each chapter and article organized into numbered folders for clear navigation. Contributors can translate M

Tiny-slider is a vanilla JavaScript carousel library used to create touch-enabled content sliders and accessible UI components without external dependencies. It functions as a responsive layout engine that adjusts slide visibility and dimensions based on viewport breakpoints. The library distinguishes itself through built-in lazy loading for images and media to improve page performance and a responsive system that automatically scales item counts and spacing according to the device screen size. It also supports nested slider instances, allowing for the creation of multi-directional scrolling

This project provides a React hook for synchronizing component state with browser storage, ensuring data persists across page reloads and browser sessions. It is designed to manage persistent application state while providing hydration-safe initialization to prevent mismatches during the transition from server-side rendering to client-side execution. The library distinguishes itself by including a fallback manager that detects when browser storage is inaccessible, automatically switching to an in-memory state to maintain application continuity. It also supports cross-tab synchronization by li

Partytown is a main thread performance optimizer and web worker script orchestrator. It functions as a third party script offloader that relocates resource-intensive external JavaScript from the browser's main thread into a sandboxed web worker environment. The project focuses on improving core web vitals and overall page responsiveness by reducing main thread blocking time. This isolation ensures that heavy third party scripts do not interfere with the execution of core application code and page loading speed. The system provides infrastructure for client-side script offloading through DOM

This is a collection of small JavaScript projects and code samples that demonstrate the implementation of fundamental programming concepts through practical applications. The repository serves as a reference for building interactive user interfaces, managing application state, and integrating external APIs using vanilla JavaScript. The project focuses on the use of standard JavaScript without external frameworks to create interface elements such as modals, sliders, and galleries. It provides examples of organizing complex application logic through object-oriented patterns using classes and ob

Twill is a Laravel CMS toolkit and admin panel generator designed for building custom administrative consoles and content management systems. It serves as a headless CMS framework and a toolkit for defining content models and managing structured data through a dedicated administrative interface. The project features a visual block editor that allows publishers to arrange and configure reusable content sections via a drag-and-drop interface. It includes a dedicated digital asset manager for storing, cropping, and optimizing images and files across local or cloud storage, as well as a multiling

Use-persisted-state is a React hook library that persists component state in browser storage and synchronizes updates across multiple tabs and windows. It extends standard component state management by automatically saving values to browser storage providers on every state update, ensuring user data survives page reloads and browser sessions. The library supports cross-component state sharing by linking multiple distinct component instances to a single storage key so they share and update identical data. It provides factory-generated hook instances that create isolated state functions bound t

This project is a comprehensive collection of web development exercises and application concepts designed to help developers practice and improve their technical proficiency. It serves as a curated resource for building diverse software projects, ranging from simple utility tools to complex, interactive web applications that demonstrate core programming and interface design skills. The repository distinguishes itself by providing a wide array of practical implementation challenges that cover the full spectrum of frontend and full-stack development. Users can engage with tasks that require man

Easy-peasy is a React state management library and typed framework that provides a centralized store for managing global application state. It functions as an immutable state store and an async state orchestrator, ensuring end-to-end type safety for state definitions, actions, and derived values. The library distinguishes itself by converting direct mutation syntax into immutable updates to simplify the management of nested data. It includes a mechanism for persisting the state tree to storage and rehydrating it during the application boot process, with the ability to suspend the user interfa

Privacy Badger is a browser privacy extension designed to block third-party trackers and strip monitoring parameters from URLs to protect user anonymity. It functions as a heuristic tracker blocker, identifying tracking domains by analyzing their appearance across multiple websites. The extension includes a link tracking sanitizer that uses regular expression matching to remove identifiers from outgoing links before navigation occurs. It also acts as a third-party content controller, replacing embedded trackers and social widgets with placeholders that only activate upon manual user interacti

Authenticator is a multi-factor authentication manager and browser extension designed to generate and store two-step verification codes directly within a web browser. It functions as an encrypted secret store that produces both time-based and counter-based security codes to protect online account access. The project distinguishes itself through cross-browser synchronization, replicating authentication accounts across different browser instances using cloud or local backups. It utilizes password-based encryption to protect authentication seeds and provides a synchronization tool to maintain co

next-intl is an internationalization framework for Next.js applications. It provides a system for managing translations, localized routing, and ICU message formatting to deliver multilingual content across server and client components. The project distinguishes itself through a focus on developer experience and type safety, utilizing a TypeScript translation validator that generates declaration files from JSON messages for compile-time key validation. It streamlines translation workflows with tools for automatically extracting strings from source code into message files and synchronizing thos

EmDash is an open-source content management system built on Astro that combines a visual admin panel with a plugin-driven architecture and server-side rendering. It provides a complete content management system with structured content modeling, a rich text editor using Portable Text format, and a TypeScript API for type-safe content queries. The system supports authentication through passkeys, OAuth 2.1, and external providers, with role-based access control and fine-grained permission scopes. What distinguishes EmDash is its plugin development framework, which supports both native plugins ru

Polyglot.js is a JavaScript internationalization library and client-side translation framework. It provides a system for mapping unique keys to localized strings, allowing applications to translate text into multiple languages. The library includes a pluralization and interpolation engine that handles complex grammatical plural forms based on numeric counts and inserts dynamic variables into translated strings. It supports nested namespaces to organize phrase mappings into logical categories. These utilities cover phrase translation, locale-driven configuration, and the management of multi-l

This project is a collection of reusable React hooks designed to wrap browser APIs, manage state persistence, and handle DOM observation. It provides a consistent interface for integrating native browser capabilities directly into the React component lifecycle. The library includes specialized toolkits for monitoring the browser environment, such as window resizing, network connectivity, and viewport visibility. It also provides mechanisms for managing execution timing through debouncing, throttling, and the control of timeouts and intervals. Additional capabilities cover state management wi

VvvebJs is a self-hosted, vanilla JavaScript library for visually assembling web pages by dragging pre-built HTML components onto a canvas. It functions as a visual HTML editor and component-based page builder that requires no build tools or external dependencies, and can be deployed on a server with PHP or Node.js backend for saving and exporting pages. The builder organizes reusable HTML components into named groups for drag-and-drop assembly, and provides visual property editing that modifies HTML attributes, CSS styles, and class names through form controls and property panels. It include

django-cms is a content management system framework for building enterprise websites using Python and the Django web framework. It functions as a component-based system that utilizes reusable content blocks, placeholders, and plugins to create flexible website layouts. The platform is distinguished by its focus on hierarchical page management, organizing site structures into a tree format to generate logical navigation and search-engine-friendly URLs. It also provides a multilingual platform for managing international content, including translation tools and site distribution across multiple