Open-source alternatives to ScrollTrigger

This project is a collection of experimental frontend prototypes, comprising a creative web layout gallery, a CSS user interface component library, and a visual experiment lab. It serves as an interactive animation showcase for holographic effects, audio-visual synthesis, and dynamic state transitions. The repository features specialized implementations of interactive media, including physics-based particle systems, real-time audio-visual synthesis, and an interactive sketching system. It also includes tools for content generation, such as text-based image reconstruction and a web-based prese

elevator.js is a lightweight JavaScript library that adds a playful, elevator-themed scroll-to-top button to a webpage. When clicked, it smoothly animates the page back to the top while playing a looping elevator music track in the background, masking the transition and adding a whimsical touch to the user experience. The library goes beyond a simple scroll-to-top button by offering configurable scroll duration, the ability to scroll to any specified DOM element with optional vertical padding, and callback hooks that fire user-defined functions at the start and end of the animation. This allo

Skrollr is a dependency-free scroll-driven animation engine and cross-platform frontend library. It functions as a toolkit for linking CSS properties and HTML attributes to scroll positions to create synchronized animations, specifically providing utilities for the interpolation of SVG attributes. The library enables the creation of parallax scrolling and interactive web storytelling by mapping scroll offsets to specific style values. It allows for the development of non-linear movement and dynamic SVG effects through the use of custom HTML attributes that define keyframes. The system covers

AOS is a scroll-triggered animation library that controls the execution, timing, and mapping of CSS transitions based on element visibility and browser viewport intersections. It functions as a DOM element animation controller and a viewport intersection trigger to initiate visual transitions as elements enter the screen. The library utilizes a custom CSS transition bridge to map scroll-based triggers to CSS class changes, enabling integration with external styling frameworks. It supports anchor-based animation triggers, allowing the visibility of one page element to act as the trigger point

Lax.js is a lightweight JavaScript library designed for creating scroll-driven animations and interactive motion effects on web pages. It functions as a frontend interaction framework that enables developers to apply dynamic visual transformations to elements as they enter or exit the viewport. The library distinguishes itself by decoupling animation logic from core scripts through a declarative mapping system that utilizes data attributes. It processes scroll progress through a functional pipeline, mapping vertical offsets to specific CSS property ranges using linear interpolation to ensure

in-view is a DOM visibility detector and intersection observer wrapper. It serves as a viewport transition handler that triggers callbacks and events when specific screen elements enter or exit the browser window. The library provides a system for configuring visibility criteria using pixel offsets, percentages, or custom test functions. It includes utilities for observing visibility changes, performing manual visibility evaluations, and checking the current status of an element within the visible area. These capabilities support application patterns such as lazy loading, infinite scrolling,

Rellax is a dependency-free vanilla JavaScript library and frontend utility used to create parallax web design effects. It functions as a scroll-based animation tool that moves page elements at different speeds to produce a sense of depth and layered motion. The library supports both vertical and horizontal parallax tracking for panoramic layouts and allows for motion speed control. It includes breakpoint-aware speed mapping to adjust movement based on screen width and provides viewport centering to position elements relative to the center of the screen. Beyond basic motion, the tool manages

This is a React animation library providing a collection of components for creating choreographed motion, complex transitions, and SVG morphing. It functions as a motion design specification and a UI component animation wrapper system used to apply 3D transforms, Bezier curves, and entry-exit transitions to interface elements. The project includes a scroll-driven animation suite for synchronizing UI movements and parallax effects with the viewport position, as well as an SVG motion framework for animating paths, drawing lines incrementally, and interpolating coordinates for shape morphing. I

ScrollReveal is a client-side JavaScript library used to trigger CSS animations and transitions for page elements as they enter the browser viewport. It functions as a DOM element animation trigger and a simplified wrapper for the Intersection Observer API to coordinate visual entrance effects and staggered animations based on the user's scroll position. The library focuses on scroll-driven motion and reveal effects, enabling the execution of visual changes and animations automatically as a user navigates a website. It manages the reveal of page content to create movement and progression with

GSAP is a comprehensive JavaScript animation library designed for orchestrating complex motion sequences and interactive user interfaces. It provides a robust property-interpolation engine that calculates intermediate values for CSS styles, attributes, and numeric properties, enabling smooth visual transitions across web elements. The framework is built on a core architecture that manages animation lifecycles, timeline-based sequence orchestration, and virtual property interception to ensure precise control over motion. The library distinguishes itself through a modular, plugin-based extensib

WOW is a JavaScript library and frontend animation controller that triggers CSS animations when elements enter the browser viewport during scrolling. It functions as a viewport trigger engine, managing the timing and execution of visual transitions for both static and dynamic page content. The library integrates scroll events with CSS animations and effects from libraries such as Animate.css. It utilizes intersection observers to monitor viewport entry and mutation observers to track and apply animation triggers to new elements added to the DOM after the initial setup.

Motion is a high-performance animation library that provides a unified, declarative architecture for managing visual transitions and motion states across web interfaces. By utilizing a lightweight engine, it allows developers to define complex animations through component properties rather than manual DOM manipulation, ensuring consistent behavior across various component-based frameworks and vanilla JavaScript environments. The library distinguishes itself through a sophisticated physics-based motion engine that simulates natural movement using mass, damping, and stiffness parameters. It inc

ScrollReveal is a JavaScript library designed to manage scroll-triggered visual transitions for web elements. It functions as a framework for tracking element visibility relative to the browser viewport, allowing developers to apply declarative animation sequences as users scroll through a page. The library provides centralized control over motion design by maintaining a global configuration registry that merges with local element settings to ensure consistent behavior. It distinguishes itself through its lifecycle management capabilities, which include the ability to stagger the reveal of mu

WOW is a JavaScript library and animation engine designed to trigger CSS animations when elements enter the browser viewport during page scrolling. It serves as a tool for orchestrating visual transitions based on the user's scroll position and element visibility. The library functions as a dynamic content animation tool, capable of detecting and animating new elements added to the page after the initial load. This allows visual effects to be applied to dynamically injected content without requiring a page refresh. The system utilizes the Intersection Observer API to detect viewport entry an

This library provides a collection of component-based wrappers designed to automate element entrance animations within web interfaces. By utilizing the browser's intersection observer capabilities, it tracks element visibility to trigger visual transitions automatically as content enters the viewport. The library distinguishes itself through declarative orchestration, allowing for the creation of sequential and staggered reveal patterns across groups of elements. It manages the animation lifecycle by dynamically injecting CSS keyframes into the document, ensuring that motion effects are appli

uillayouts is a comprehensive design system consisting of interactive components, responsive templates, motion-enhanced UI kits, and advanced visual effect toolkits. It provides a collection of accessible React UI components and pre-designed layout sections for landing pages. The project is distinguished by a specialized visual effects library and motion-driven components. It features high-performance graphical enhancements such as glassmorphism, mesh gradients, noise overlays, and SVG masking, alongside interactive elements that utilize physics-based animations and cursor-tracking effects.

Locomotive Scroll is a JavaScript library and toolkit for managing DOM scroll interactions, featuring a smooth scroll motion controller and a parallax scrolling engine. It provides a system for implementing fluid scrolling and tracking element visibility within the viewport. The library creates depth and motion by moving elements at different speeds relative to the scroll position. It includes a viewport visibility tracker used to initiate visual transitions and animations when specific elements enter the browser viewport. The toolkit covers programmatic scroll control, dynamic element regis

This project is a Tailwind CSS landing page template and responsive marketing website kit. It serves as a React frontend starter providing a set of pre-designed marketing layouts and components for rapid website development. The kit includes an animated UI component library featuring scroll-triggered transitions and dynamic visual effects. It provides themed page templates and design source files for creating marketing sites, professional portfolios, community portals, admin dashboards, and technical documentation sites. The codebase covers a broad range of interface capabilities, including

laxxx is a lightweight JavaScript framework for creating scroll-driven animations and DOM element bindings. It functions as a CSS interpolation engine and animation utility that maps numeric driver values to HTML attributes and styles in real time. The framework specializes in linking visual properties to scroll position and velocity, featuring built-in inertia to smooth out transitions and prevent abrupt visual jumps. It utilizes a driver-based system to generate numeric streams from inputs like mouse movement or time, which are then transformed into CSS outputs through easing equations 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

DiscreteScrollView is a UI component and animation library for React Native designed to create centered scroll views and infinite scroll lists. It provides a mechanism to keep the active selection centered within the viewport while maintaining the visibility of adjacent items. The library enables the implementation of infinite carousels by looping through data sets without boundaries. It allows for the application of visual transformations to items based on their real-time scroll position relative to the center of the view. The toolset includes capabilities for monitoring selection states an

MaterialViewPager is a library that creates a scrollable, swipeable interface with an animated header image, toolbar, and logo following Material Design guidelines. It provides a complete implementation of a Material Design ViewPager, where the header background color and image animate as the user swipes between pages. The library coordinates scroll-driven header animations by synchronising scroll offsets from the ViewPager and attached scrollable views through a central coordinator. It supports fragment-based page composition, allowing each page to have independent content layouts while shar

GreenSock-JS is a JavaScript animation library and framework designed for animating CSS properties, SVG attributes, and JavaScript values. It functions as a scroll-driven animation engine and a sequencing system for coordinating multiple animations into a single timeline for precise execution across web browsers. The project provides tools for creating interactive scroll effects by linking animation progress to a user's scroll position. It also includes a responsive animation framework that adjusts behaviors and timing based on media queries to maintain consistency across different device scr

JazzHands is a UIKit framework providing a scroll-driven animation engine and a paging layout manager. It enables the binding of view properties to timelines of keyframes, allowing visual transitions to be synced with real-time scroll offsets or gesture data. The project distinguishes itself through a value-interpolation engine that calculates intermediate property states. This allows animation progress to be driven by external input values, mapping view attributes to a timeline based on a floating point progress indicator. The framework also includes a system for organizing views within pag

Hamburgers is a CSS component library providing a collection of animated navigation icons. These components use CSS transitions to toggle between collapsed and active states, serving as reusable style definitions for interactive user interface elements. The library features customizable UI icons where colors and dimensions are controlled via CSS configuration variables. This allows for the modification of icon appearance and style during the build process. The project covers the implementation of animated menu navigation and responsive web interface design through the use of frontend visual

FloatingActionButton is a scroll-driven UI controller and mobile-first interface element. It provides a circular button that floats above content and toggles its visibility based on scroll direction to maximize available screen space. The component functions as a CSS-animated UI element, utilizing stylesheet transitions to handle the visual sliding and fading of the interface controls. It is designed for mobile interfaces to provide quick access to primary actions without obscuring page content. The system manages visibility by monitoring scroll events on a designated DOM container and detec

Bespoke is a lightweight JavaScript presentation framework designed for creating sequenced web presentations. It functions as a DOM-based slide controller and navigation engine that manages the visibility and styling of HTML elements to create presentation flows. The framework is built around a plugin-based architecture that allows for the extension of core behavior. This system enables the injection of custom logic into the navigation workflow by intercepting and modifying system events, including the ability to cancel specific actions. The toolkit covers content element definition and stat