Page 2 | Best Component Libraries for Windows of 2025

Qt

Qt Group

Software requirements are increasing exponentially, but your team's capacity is not! Qt 6's tools & APIs empower designers and developers to create more! Build consistently branded 2D & 3D applications with a custom or native look & feel, using designer and developer-friendly tools, a leaner, yet more powerful QML language, and a flexible graphics architecture. From microcontrollers (MCUs) to supercomputers, Qt 6 and our massive ecosystem provide everything you need to design, develop, and deploy software for your entire product line. Create applications that are beautiful in the front end and powerful in the back end, with the same codebase for any hardware, any OS, or bare metal. Qt Group is a global software company with a strong presence in more than 70 industries and is the leading independent technology behind 1+ billion devices and applications. Qt is used by major global companies and developers worldwide.

Starting Price: $302 per month

View Software

regon

litex.regon, a frontend for Polish REGON database. Simple, pythonic wrapper for REGON database. To access its SOAP API, one needs a user key issued by REGON administrators. REGONAPI accepts one argument, the service URL (provided by REGON administrators). After login, one can start querying the database. Single REGON number (either 9 or 14 digits long), single 10 digit KRS number, single NIP (10 digits strings), collection of REGONs (all of them have to be either 14 or 9 digits long), collection of KRSs, collection of NIPs. Only one parameter is used in the query. If multiple ones are passed, first from the above list is taken into account. Additionally, a detailed parameter can be passed, detailed=True causes the search method to fetch the default detailed report. If one knows the REGON of a business entity and a detailed report name, a full report can be fetched directly.

Starting Price: Free

View Software

GDAL

GDAL is a translator library for raster and vector geospatial data formats that is released under an MIT style Open Source License by the Open Source Geospatial Foundation. As a library, it presents a single raster abstract data model and single vector abstract data model to the calling application for all supported formats. It also comes with a variety of useful command line utilities for data translation and processing.

Starting Price: Free

View Software

gevent

gevent is a coroutine-based Python networking library that uses greenlet to provide a high-level synchronous API on top of the libev or libuv event loop. gevent is inspired by eventlet but features a more consistent API, simpler implementation and better performance. Read why others use gevent and check out the list of the open source projects based on gevent.

Starting Price: Free

View Software

gTTS

gTTS (Google Text-to-Speech), a Python library and CLI tool to interface with Google Translate's text-to-speech API. Write spoken mp3 data to a file, a file-like object (bytestring) for further audio manipulation, or stdout. Or simply pre-generate Google Translate TTS request URLs to feed to an external program. Customizable speech-specific sentence tokenizer that allows for unlimited lengths of text to be read, all while keeping proper intonation, abbreviations, decimals and more. Customizable text pre-processors which can, for example, provide pronunciation corrections.

Starting Price: Free

View Software

SQL Server Data Access Components

Devart

Enjoy the highest performance and unlimited possibilities when working with SQL Server. SQL Server Data Access Components (SDAC) is a library of components that provides native connectivity to SQL Server from Delphi and C++Builder including Community Edition, as well as Lazarus (and Free Pascal) for Windows, Linux, macOS, iOS, and Android for both 32-bit and 64-bit platforms. SDAC-based applications connect to SQL Server directly through OLE DB, which is a native SQL Server interface. SDAC is designed to help programmers develop faster and cleaner SQL Server database applications. SDAC, a high-performance, and feature-rich SQL Server connectivity solution is a complete replacement for standard SQL Server connectivity solutions and presents an efficient native alternative to the Borland Database Engine (BDE) and standard dbExpress driver for access to SQL Server. SDAC-based DB applications are easy to deploy, and do not require the installation of other data provider layers.

Starting Price: $199.95 per year

View Software

statsmodels

statsmodels is a Python module that provides classes and functions for the estimation of many different statistical models, as well as for conducting statistical tests and statistical data exploration. An extensive list of result statistics is available for each estimator. The results are tested against existing statistical packages to ensure that they are correct. The package is released under the open-source Modified BSD (3-clause) license. statsmodels supports specifying models using R-style formulas and pandas DataFrames. Have a look at dir(results) to see available results. Attributes are described in results.__doc__ and results methods have their own docstrings. You can also use numpy arrays instead of formulas. The easiest way to install statsmodels is to install it as part of the Anaconda distribution, a cross-platform distribution for data analysis and scientific computing. This is the recommended installation method for most users.

Starting Price: Free

View Software

h5py

HDF5

The h5py package is a Pythonic interface to the HDF5 binary data format. It lets you store huge amounts of numerical data, and easily manipulate that data from NumPy. For example, you can slice into multi-terabyte datasets stored on disk, as if they were real NumPy arrays. Thousands of datasets can be stored in a single file, categorized and tagged however you want. H5py uses straightforward NumPy and Python metaphors, like dictionary and NumPy array syntax. For example, you can iterate over datasets in a file, or check out the .shape or .dtype attributes of datasets. You don't need to know anything special about HDF5 to get started. In addition to the easy-to-use high level interface, h5py rests on a object-oriented Cython wrapping of the HDF5 C API. Almost anything you can do from C in HDF5, you can do from h5py.

Starting Price: Free

View Software

Unirest

Kong

Unirest is a set of lightweight HTTP libraries available in multiple languages, built and maintained by Kong, who also maintains the open-source API Gateway Kong. To utilize Unirest for node.js install the npm module. You're probably wondering how using Unirest makes creating requests easier. Besides automatically supporting gzip, and parsing responses, you can start with basic examples. A request can be initiated by invoking the appropriate method on the Unirest object, then calling .end() to send the request. Alternatively, you can send the request directly by providing a callback along with the URL. Provides simple and easy-to-use methods for manipulating the request prior to being sent. This object is created when a Unirest method is invoked. This object contains methods that are chainable like other libraries such as jQuery and popular request module Superagent (which this library is modeled after slightly).

Starting Price: Free

View Software

IPy

The IP class allows a comfortable parsing and handling for most notations in use for IPv4 and IPv6 addresses and networks. It was greatly inspired by RIPE’s Perl module NET::IP’s interface but doesn’t share the implementation. It doesn’t share non-CIDR netmasks, so funky stuff like a netmask of 0xffffff0f can’t be done here. It can detect about a dozen different ways of expressing IP addresses and networks, parse them and distinguish between IPv4 and IPv6 addresses. Nearly all class methods which return a string have an optional parameter ‘wantprefixlen’ which controls if the prefixlen or netmask is printed. Per default the prefilen is always shown if the network contains more than one address. You can also change the defaults on an per-object basis by fiddling with the class members.

Starting Price: Free

View Software

Mako

It provides a familiar, non-XML syntax that compiles into Python modules for maximum performance. Mako's syntax and API borrows from the best ideas of many others, including Django and Jinja2 templates, Cheetah, Myghty, and Genshi. Conceptually, Mako is an embedded Python (i.e. Python Server Page) language, which refines the familiar ideas of componentized layout and inheritance to produce one of the most straightforward and flexible models available, while also maintaining close ties to Python calling and scoping semantics. As templates are ultimately compiled into Python bytecode, Mako's approach is extremely efficient and was originally written to be just as fast as Cheetah. Today, Mako is very close in speed to Jinja2, which uses a similar approach and for which Mako was an inspiration. Can access variables from their enclosing scope as well as the template's request context

Starting Price: Free

View Software

yarl

Python Software Foundation

All URL parts, scheme, user, password, host, port, path, query, and fragment are accessible by properties. All URL manipulations produce a new URL object. Strings passed to constructor and modification methods are automatically encoded giving canonical representation as result. Regular properties are percent-decoded, use raw_ versions for getting encoded strings. Human-readable representation of URL is available as .human_repr(). PyPI contains binary wheels for Linux, Windows and MacOS. If you want to install yarl on another operating system (like Alpine Linux, which is not manylinux-compliant because of the missing glibc and therefore, cannot be used with our wheels) the tarball will be used to compile the library from the source code. It requires a C compiler and Python headers installed. Please note that the pure-Python (uncompiled) version is much slower. However, PyPy always uses a pure-Python implementation, and, as such, it is unaffected by this variable.

Starting Price: Free

View Software

zope.interface

Python Software Foundation

This package is intended to be independently reusable in any Python project. It is maintained by the Zope Toolkit project. This package provides an implementation of “object interfaces” for Python. Interfaces are a mechanism for labeling objects as conforming to a given API or contract. So, this package can be considered as an implementation of the Design By Contract methodology support in Python. Interfaces are objects that specify (document) the external behavior of objects that “provide” them. An interface specifies behavior through informal documentation in a doc string, attribute definitions, and invariants, which are conditions that must hold for objects that provide the interface. Attribute definitions specify specific attributes. They define the attribute name and provide documentation and constraints of attribute values. Attribute definitions can take a number of forms.

Starting Price: Free

View Software

MySQL Data Access Components

Devart

Enjoy the highest performance and unlimited possibilities when working with MySQL. MySQL Data Access Components (MyDAC) is a library of components that provides direct access to MySQL and MariaDB from Delphi and C++Builder, including Community Edition, as well as Lazarus (and Free Pascal) on Windows, Linux, macOS, iOS, and Android for both 32-bit and 64-bit platforms. Applications based on MyDAC can connect directly to MySQL server or work through the MySQL client library. MySQL Data Access Components are designed to help programmers develop MySQL database applications faster and easier. MyDAC is a complete replacement for standard MySQL connectors and presents an efficient alternative to the Borland Database Engine (BDE) and standard dbExpress driver for access to MySQL.

Starting Price: $199.95 one-time payment

View Software

BuildVu

IDR Solutions

With BuildVu, you’ll unlock precise PDF-to-HTML/SVG conversion, giving you greater control and added functionality over PDF in your web application. -Optimized Content: BuildVu intelligently converts PDFs, optimizing for smaller file sizes and fast rendering in browsers. -File Metadata: Access PDF data in JSON format, including metadata, word lists, outlines (bookmarks), and annotations. -Thumbnails: Generate high-quality page thumbnails with customizable dimensions. -Annotations: Enjoy support for various annotation types (Links, Popups, Sound/Video, Text, Highlight, Underline) in easy-to-use JSON format. -search.json: Extract all text from the document alongside the HTML content. -Font Conversion: Restructure embedded fonts for compatibility across web browsers. -Office Conversion: Combine BuildVu with LibreOffice for seamless conversion from Office formats (Word, PowerPoint, Excel).

Starting Price: $450 per month

View Software

ng2-charts

The overrides object has the same type as the chart options object ChartOptions, and wherever a simple field is encountered it replaces the matching field in the options object. When an array is encountered (as in the xAxes and yAxes fields above), the single object inside the array is used as a template to override all array elements in the matching field in the options object. So in the case above, every axis will have its ticks and gridline colors changed. There are one directive for all chart types: baseChart, and there are 8 types of charts: line, bar, radar, pie, polarArea, doughnut, bubble and scatter.

Starting Price: Free

View Software

FormVu

IDR Solutions

FormVu is an SDK designed to convert PDF Form files into standalone HTML with interactive form components. Here are some of its key features: -Interactive Conversion: Converts PDF forms into HTML while retaining their appearance and functionality. -Data Security: Runs on your own servers, ensuring customer data remains secure and private. -Versatile Integration: Supports both AcroForms and XFA Forms and can be integrated into web applications. -Flexible Output: Allows saving filled forms back as PDFs or posting data as HTML form data or JSON. -Users can continue to use Forms in a web browser. Converted PDF forms retain their appearance and interaction. Data can be saved to the original file. -PDF forms can be easily and securely integrated into a Web application workflow while retaining all their interaction and functionality. -Forms are converted and hosted on your Computers. FormVu is not a cloud service and makes no calls outside. So customer data is always

Starting Price: $1,800 per month

View Software

NG-Bootstrap

As simple as Angular & Bootstrap CSS. Nothing else. If you know Angular, you also know ng-bootstrap. All the Bootstrap widgets you know like carousel, modal, popover, tooltip, navs plus some additional goodies like datepicker, rating and typeahead. All code is tested with almost 100% coverage, all changes are meticulously reviewed. We are not cutting corners. All the widgets are accessible. We use proper HTML elements and required aria attributes. Keyboard navigation and focus management work as expected. We've created angular-ui/bootstrap and have spent several years doing widget development. A number of team members are core Angular contributors. We give back to the community by contributing to projects we build upon (Angular, Bootstrap).

Starting Price: Free

View Software

NG-Lightning

Built upon next generation frameworks like Angular and Salesforce's Lightning Design System, rest assured that you are building an application to stand the test of time. We focus on building stateless functional components that depend only on their input properties, guaranteeing better performance, more development flexibility and seamless integration with your application's requirements. We put a lot of effort to follow Lightning Design System's accessibility guidelines, to assure that your product is operable by people with a wide range of abilities and meets all legal requirements. Including SLDS CSS files and a small set of structural styles of CDK, is required for your application to work correctly. If you are using the Angular CLI, you need to add the following to the styles array of your angular.json file.

Starting Price: Free

View Software

ngSemantic

Semantic UI ( minified versions of css and js ) must be loaded in index.html. Angular2 building blocks based on Semantic UI. If you want to add loading animation to your Angular 2 app, add this code snippet inside your root app tag.

Starting Price: Free

View Software

NGX-Bootstrap

Valor Software

We put much effort into making ngx-bootstrap modular so you can implement your templates, styles, whatnot. All components are designed with extensibility and adaptivity in mind. You can expect them to work on Mobile and Desktop with the same level of performance. We have incorporated a set of style guides and guidelines to enhance both code maintainability and readability. Also, we always support the latest Angular versions and provide full unit-test coverage. Being developers ourselves, we understand the importance of documentation. Well-written and continually updated docs significantly ease up the life of developers and improve overall software quality. We are doing our best to provide you with the most complete and easy-to-understand documentation out there. While working with visually rich libraries, you need to know what you are getting without going through the installation hassle. That is why we have developed a great set of demos for most of the component’s methods.

Starting Price: Free

View Software

NG-ZORRO

ng-zorro-antd

An enterprise-class Angular UI component library based on Ant Design, all components are open source and free to use under MIT license. Ant Design of Angular is dedicated to providing a good development experience for programmers. The following StackBlitz link demonstrates a basic use case, and it is recommended to fork this demo as a baseline while doing Bug Report. However, please do not use this demo as a scaffold in a real production environment. After changing the directory to the newly created project, you can automatically run the following commands to initialize the project's configuration, including importing i18n files and stylesheets and loading initial modules. You may use any existing scaffold tools in the Angular ecosystem in order to customize the building process.

Starting Price: Free

View Software

DataViewsJS

GrapeCity

DataViewsJS enables you to easily and professionally customize the presentation of your data using different layouts, row templates, data fields, calculations, and editing modes that are completely and easily customizable. Leverage the powerful calc engine to perform calculations on any set of JSON data. With our calculation engine, your computing power is optimized for large data and complex calculations. DataViewsJS was designed from the start to be a fast, full-featured, and completely customizable developer tool for efficient data display and editing to meet any of your JavaScript application’s needs. Localized resources for Chinese, Japanese, and Korean are included with DataViewsJS. Additional languages can be easily added by creating your own resource files and setting them with simple script code. Modern data presentation patterns such as those you see on social networks and other sites become easy when you use DataViewsJS interchangeable layouts.

Starting Price: $999 per year

View Software

SpreadJS

GrapeCity

Deliver true Excel-like spreadsheet experiences, fast - with zero dependencies on Excel. Create financial apps, dashboards, charts, pivot tables, performance benchmarks, science lab notebooks, and other similar JavaScript spreadsheet applications. JavaScript spreadsheet components are software elements that help developers add Excel-like functionality to web applications. SpreadJS is a suite of JavaScript spreadsheet controls that includes import/export, data inputs, cell customization, and an extensive calculation engine with over 500 functions. With over 25 years of experience in creating award-winning spreadsheets for professional developers, we already know what you want and need. No other spreadsheet vendor can match that. Put our spreadsheet experience to work for you today.

Starting Price: $1,499 per developer

View Software

Blazor

Microsoft

Blazor lets you build interactive web UIs using C# instead of JavaScript. Blazor apps are composed of reusable web UI components implemented using C#, HTML, and CSS. Both client and server code is written in C#, allowing you to share code and libraries. Blazor is a feature of ASP.NET, the popular web development framework that extends the .NET developer platform with tools and libraries for building web apps. Blazor can run your client-side C# code directly in the browser, using WebAssembly. Because it's real .NET running on WebAssembly, you can re-use code and libraries from server-side parts of your application. Alternatively, Blazor can run your client logic on the server. Client UI events are sent back to the server using SignalR - a real-time messaging framework. Once execution completes, the required UI changes are sent to the client and merged into the DOM.

Starting Price: Free

View Software

Tailwind CSS

A utility-first CSS framework packed with classes like flex, pt-4, text-center and rotate-90 that can be composed to build any design, directly in your markup. Utility classes help you work within the constraints of a system instead of littering your stylesheets with arbitrary values. They make it easy to be consistent with color choices, spacing, typography, shadows, and everything else that makes up a well-engineered design system. Because Tailwind is so low-level, it never encourages you to design the same site twice. Even with the same color palette and sizing scale, it's easy to build the same component with a completely different look in the next project. Tailwind automatically removes all unused CSS when building for production, which means your final CSS bundle is the smallest it could possibly be. In fact, most Tailwind projects ship less than 10kB of CSS to the client.

Starting Price: Free

View Software

Workflow Engine

Optimajet

Embeddable .NET library for running workflows in .NET applications with integrated HTML5 graphical workflow designer. Designer allows you to easily create interactive workflows of any complexity, there’s no need to draft them programmatically. Workflow Engine is a backbone solution for business process management (BPM) which makes it feasible to automate the workflow design by using low-code visual builders. It is based on the .NET framework and JavaScript libraries. Workflow Engine enables workflow processing and correct integration by providing a graphic designer to create process workflow schemes and at the same time, this software component facilitates the management, execution, and visualization of workflow processes. Integration with solutions based on other technologies or databases is roughly the same and should not entail any difficulties. Workflow Engine offers its users all the components necessary to implement workflows of any complexity.

Starting Price: $499 one-time payment

View Software

Clarity

Clarity Design System

Clarity is a scalable, customizable, open source design system bolstered by the people that build with it, the people we build it for, and the community that makes us who we are. Our toolkit is Figma. Every component, pattern, and guideline we ship is rooted in real customer interactions. As a result, you can rely on Clarity for 30+ components and over 200 icons so you can focus on product-specific user problems. The first folx that built Clarity from scratch were a scrappy team of developers, designers, and content creators. Clarity has continued to grow on that strong start by supporting the big three: Angular, React and Vue. Our latest Core components provide support for them all. Clarity provides code examples and detailed API documentation that guide you as you build your next application.

Starting Price: Free

View Software

FormValidation

From v1.0.0, the library is rewritten in Typescript and ES6 completely. The giant and old jQuery plugin doesn't exist anymore. With the new plugin-based architecture, the library has really small core. Everything else is built around as a plugin. Each file in the dist/css and dist/js folders has two versions: the normal code in the .css, .js files, and the minified code in the .min.css, .min.js files. In order to reduce the page loading time and enhance the user experience when visiting your site, you should use the .min.css, .min.js files in the production website. Meanwhile, in the development mode, you should use the normal files without .min part to debug the code more easy.

Starting Price: $50 one-time payment

View Software

imageio

Imageio is a Python library that provides an easy interface to read and write a wide range of image data, including animated images, volumetric data, and scientific formats. It is cross-platform, runs on Python 3.5+, and is easy to install. Imageio is written in pure Python, so installation is easy. Imageio works on Python 3.5+. It also works on Pypy. Imageio depends on Numpy and Pillow. For some formats, imageio needs additional libraries/executables (e.g. ffmpeg), which imageio helps you to download/install. If something doesn’t work as it should, you need to know where to search for causes. The overview on this page aims to help you in this regard by giving you an idea of how things work, and - hence - where things may go sideways.

Starting Price: Free

View Software

Best Component Libraries for Windows - Page 2

Compare the Top Component Libraries for Windows as of June 2025 - Page 2