Software Alternatives, Accelerators & Startups

Sencha Ext JS VS Preact.js

Compare Sencha Ext JS VS Preact.js and see what are their differences

Sencha Ext JS logo Sencha Ext JS

Sencha Ext JS is the most comprehensive JavaScript framework for building data-intensive, cross-platform web and mobile applications for any modern device. Ext JS includes 140+ pre-integrated and tested high-performance UI components.

Preact.js logo Preact.js

Preact is a fast 3kB alternative to React with the same modern API. Components & Virtual DOM.
  • Sencha Ext JS Landing page
    Landing page //
    2023-07-24
  • Preact.js Landing page
    Landing page //
    2023-05-11

Sencha Ext JS features and specs

  • Comprehensive Component Library
    Sencha Ext JS offers a wide range of ready-to-use components including grids, charts, forms, and more, which significantly reduces development time.
  • Robust Data Package
    Provides a powerful data package that allows developers to use standard CRUD operations and easily manage data collections and models.
  • Cross-browser Compatibility
    Ensures consistent appearance and behavior across all major browsers including IE, Firefox, Chrome, Safari, and Opera.
  • MVC/MVVM Architecture
    Supports Model-View-Controller and Model-View-ViewModel architectures, promoting a clean separation of concerns and more maintainable code.
  • Extensive Documentation and Support
    Comes with comprehensive documentation, community forums, and professional support options that help developers quickly resolve issues.
  • Built-in Theming
    Offers a robust theming system that allows easy customization of the look-and-feel to match company branding or specific application requirements.
  • Enterprise-grade Features
    Includes enterprise features like advanced data analytics, pivot grids, and D3 visualizations, making it suitable for complex applications.

Possible disadvantages of Sencha Ext JS

  • Costly Licensing
    Sencha Ext JS is a commercial product with licensing fees, which can be expensive for small businesses and individual developers.
  • Steep Learning Curve
    The framework is feature-rich and complex, meaning that new developers may find it challenging to learn and start using effectively.
  • Large Library Size
    The extensive range of features and components leads to a large library size, which can be a concern for performance and load times.
  • Lower Popularity
    Sencha Ext JS is not as widely used as some other frameworks like React or Angular, resulting in a smaller community and fewer third-party resources.
  • Complex Integration
    Integrating Sencha Ext JS with other modern frameworks or libraries can be complex, requiring more effort to make them work together seamlessly.
  • Limited Flexibility
    Ext JS enforces a particular structure and design philosophy, which might limit flexibility and creativity for developers who prefer a more modular approach.
  • Performance Overhead
    The framework's extensive capabilities and features can sometimes introduce performance overhead, particularly in very high-performance or resource-constrained environments.

Preact.js features and specs

  • Size
    Preact is very small in size (about 3KB gzipped), which makes it easy to load and faster to execute, resulting in improved performance and quicker load times.
  • Compatibility
    Preact is largely compatible with React, allowing developers to switch to Preact with minimal code changes. This makes it easier to adopt for projects already using React.
  • Performance
    Due to its small size and efficient design, Preact offers excellent performance, especially on low-powered devices and in applications with heavy user interactions.
  • Ecosystem
    Preact can work with many tools and libraries that are designed for React, giving developers access to a rich ecosystem of resources.
  • Community
    Preact has an active and growing community that provides support, plugins, and third-party tools, making it easier for developers to find solutions and share knowledge.

Possible disadvantages of Preact.js

  • Feature Set
    While Preact covers most of the core React features, it lacks some of the advanced functionality present in React, which may require additional workarounds or third-party libraries.
  • Learning Curve
    For developers coming from a non-React background, learning Preact might involve a learning curve, particularly because of its similarities and subtle differences with React.
  • Tooling Compatibility
    Although many tools designed for React can work with Preact, some might not be directly compatible, requiring additional configuration or patches.
  • Community Size
    While Preact has a supportive community, it is smaller compared to the massive React community, which can result in fewer available resources and third-party packages.
  • Maturity
    Preact, being newer and less widely adopted than React, might not have the same level of battle-tested reliability for all use cases, especially for large scale applications.

Sencha Ext JS videos

LinkRest „ Modern RESTful API Framework for Building Ext JS Applications

More videos:

  • Review - Testing Ext JS & Sencha Touch with Siesta
  • Demo - Sencha Ext JS Weekly Product Demo

Preact.js videos

JS frameworks are replaceable

Category Popularity

0-100% (relative to Sencha Ext JS and Preact.js)
Javascript UI Libraries
32 32%
68% 68
JavaScript Framework
29 29%
71% 71
JS Library
100 100%
0% 0
JavaScript
0 0%
100% 100

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare Sencha Ext JS and Preact.js

Sencha Ext JS Reviews

Top JavaScript Frameworks For Mobile App Development
Sencha Touch has now been merged with Sencha Ext JS. Sencha Ext JS has been one of the most effective JavaScript frameworks to create cross-platform mobile applications. It consists of well tested and good performance UI components like pivot grid, trees, lists, forms, HTML5 calendar, D3 adapters, etc. that help in getting the best of results.
Source: medium.com
Top Cross-Platform App Development Frameworks
However, when it comes to integrating 3rd party libraries, Sencha Ext JS acts as a barrier. Also, looking at the price point, Sencha Ext JS is expensive.
Source: www.pangea.ai

Preact.js Reviews

Top JavaScript Frameworks in 2025
PreactJS is a JavaScript library that is said to be the fast 3Kb alternative to ReactJS using the same modern API. It implements the fastest virtual DOM compared to other frameworks in the market. Moreover, it is one of the smallest libraries in terms of size.
Source: solguruz.com
20 Next.js Alternatives Worth Considering
Preact is like React’s little sibling, smaller in size but with the same familiar moves. It’s cutting down the fluff and zipping through tasks with less overhead. When performance budgets are tight, Preact wiggles in perfectly.
20 Best JavaScript Frameworks For 2023
Preact is built with the same core principle of React – A component-based approach with Virtual DOM while completely compatible with React. It can even use React packages without compromising on speed, performance, and leaner size. In instances where the full potential of React isn’t necessary, most developers even use React during development and switch to Preact for...
Top 15 jQuery Alternatives To Know
ReactJS is a powerful JavaScript library to create user interfaces. Developers can design easy views at each stage in the application and there is regular update and rendering for the actual components whenever there is any data alteration. It is component-driven and creates encapsulated components that manage their own state.
Top 5 JavaScript Frameworks To Learn in 2021
But according to the graph above, we can notice a decrease in interest in Preact. This might result from having many similar frameworks with the same specs, like react-lite, Inferno, etc. However, knowing a framework like Preact will be useful for your development journey.
Source: enlear.academy

Social recommendations and mentions

Based on our record, Preact.js seems to be more popular. It has been mentiond 93 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Sencha Ext JS mentions (0)

We have not tracked any mentions of Sencha Ext JS yet. Tracking of Sencha Ext JS recommendations started around Mar 2021.

Preact.js mentions (93)

View more

What are some alternatives?

When comparing Sencha Ext JS and Preact.js, you can also consider the following products

AngularJS - AngularJS lets you extend HTML vocabulary for your application. The resulting environment is extraordinarily expressive, readable, and quick to develop.

Svelte - Cybernetically enhanced web apps

Vue.js - Reactive Components for Modern Web Interfaces

React - A JavaScript library for building user interfaces

Inferno - An extremely fast React-like javascript library for building modern user interfaces.

Webix UI - An enterprise JavaScript Library for cross-platform app development with HTML5 JavaScript widgets and easy integration with most popular JavaScript Frameworks.