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About

Powerful, extensible, and feature-packed frontend toolkit. Build and customize with Sass, utilize prebuilt grid system and components, and bring projects to life with powerful JavaScript plugins. Jump right into building with Bootstrap, use the CDN, install it via the package manager, or download the source code. Bootstrap utilizes Sass for modular and customizable architecture. Import only the components you need, enable global options like gradients and shadows and write your own CSS with our variables, maps, functions, and mixins. Import one stylesheet and you're off to the races with every feature of our CSS. The easiest way to customize Bootstrap, include only the CSS you need. Bootstrap 5 is evolving with each release to better utilize CSS variables for global theme styles, individual components, and even utilities. We provide dozens of variables for colors, font styles, and more for use anywhere.

About

Once UI is an open source design system and component library built for Next.js (and paired with a matching design system in Figma), offering a flexible style system, 100+ ready-to-use UI components, and more than 75 copy-paste blocks to rapidly assemble web apps. It supports both simple static sites and more complex applications, thanks to pre-built, deployment-ready templates for portfolios, documentation sites, blogs, ecommerce stores, and dashboards (free and Pro versions). Once UI emphasizes “component-first” development, meaning developers don’t need to manually write utility-class-heavy styling (like with some CSS frameworks); instead, they use semantic variables and components that integrate design tokens for visual consistency. For creators used to tools like utility-class frameworks or component libraries, but who want faster development with fewer dependencies, Once UI simplifies building UIs without sacrificing design quality or accessibility.

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Developers and anyone searching for a solution designed to help them build fast, responsive sites

Audience

Independent developers, freelancers, startups and small teams searching for a tool to build polished web applications or websites quickly and consistently

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version Supported
Free Trial Not Supported

Pricing

$128 per year
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Company Information

Bootstrap
United States
getbootstrap.com

Company Information

Once UI
United States
once-ui.com

Alternatives

Alternatives

Categories

Categories

SaaS Boilerplates Supported
Web Design Supported

Integrations

Article Editor Supported
Bootstrap Studio Supported
CRMS Supported
CodeLobster IDE Supported
Devlevate Supported
Health Studio Supported
Hope UI Supported
JitBlox Supported
Oorian Supported
PDFmyURL Supported
PHPixie Supported
Pinegrow Supported
PowerMock Supported
PrimeVue Supported
React Bootstrap Supported
SaaS Pegasus Supported
Serverless Supported
TinyMCE Supported
WrapPixel Supported

Integrations

Article Editor Not Supported
Bootstrap Studio Not Supported
CRMS Not Supported
CodeLobster IDE Not Supported
Devlevate Not Supported
Health Studio Not Supported
Hope UI Not Supported
JitBlox Not Supported
Oorian Not Supported
PDFmyURL Not Supported
PHPixie Not Supported
Pinegrow Not Supported
PowerMock Not Supported
PrimeVue Not Supported
React Bootstrap Not Supported
SaaS Pegasus Not Supported
Serverless Not Supported
TinyMCE Not Supported
WrapPixel Not Supported
Claim Bootstrap and update features and information
Claim Bootstrap and update features and information
Claim Once UI and update features and information
Claim Once UI and update features and information