Comparison

Bootstrap vs Preact

On the evidence we track, Preact leads this comparison with a composite score of 78/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Bootstrap full profile →Preact full profile →

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.

Bootstrap69

★Preact78

Attribute comparison across 2 tools
Attribute	Bootstrap	PreactLeader
vioscaleAI score	69 / 100high · 80%	78 / 100medium · 72%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	open_source	open_source
Price levelpricing.price_level	free	free
Transparentpricing.transparent	✓	-
Integrations
Countintegrations.count	1	-
Security
Scorecardsecurity.scorecard	7.1	5.8
Vulnerabilitiessecurity.vulnerabilities	Count: 12 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=bootstrap&per_page=100 · Last 12m: 0 · Max severity: MODERATE	Count: 2 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=preact&per_page=100 · Last 12m: 1 · Max severity: HIGH
Adoption
Dependent reposadoption.dependent_repos	874,564	78,992
Github starsadoption.github_stars	174,840	38,926
Package downloads weeklyadoption.package_downloads_weekly	5,884,932	38,692,983
Activity
Commits last 30dactivity.commits_last_30d	93	70
Release
Cadence daysrelease.cadence_days	49	13
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	MIT	MIT
Language
Primarylanguage.primary	MDX	JavaScript
Content
Faqcontent.faq	8 items	4 items

Score

vioscaleAI score

Bootstrap69 / 100high · 80%

Preact78 / 100medium · 72%

Pricing

Free tier

Bootstrap✓

Preact✓

Model

Bootstrapopen_source

Preactopen_source

Price level

Bootstrapfree

Preactfree

Transparent

Bootstrap✓

Preact–

Integrations

Count

Bootstrap1

Preact–

Security

Scorecard

Bootstrap7.1

Preact5.8

Vulnerabilities

BootstrapCount: 12 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=bootstrap&per_page=100 · Last 12m: 0 · Max severity: MODERATE

PreactCount: 2 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=preact&per_page=100 · Last 12m: 1 · Max severity: HIGH

Adoption

Dependent repos

Bootstrap874,564

Preact78,992

Github stars

Bootstrap174,840

Preact38,926

Package downloads weekly

Bootstrap5,884,932

Preact38,692,983

Activity

Commits last 30d

Bootstrap93

Preact70

Release

Cadence days

Bootstrap49

Preact13

History

Bootstrap20 items

Preact20 items

License

Spdx

BootstrapMIT

PreactMIT

Language

Primary

BootstrapMDX

PreactJavaScript

Content

Faq

Bootstrap8 items

Preact4 items

Capabilities

Feature-by-feature on the axes that matter for frontend ui frameworks. “-” means undocumented, not absent.

Capability comparison for Frontend UI Frameworks
Capability	Bootstrap	Preact
Core
Paradigm	CSS and JavaScript component library	Virtual DOM component library
Reusable component model	✓	✓
Rendering
Virtual DOM	-	✓
Signals / fine-grained reactivity	-	-
SSR support	-	✓
DX
First-class TypeScript	-	-
State
Built-in state management	-	✓
Ecosystem
Official router	-	✓
Performance
Runtime size	Small (10–40kb)	Tiny (<10kb)

Core

Paradigm

BootstrapCSS and JavaScript component library

PreactVirtual DOM component library

Reusable component model

Bootstrap✓

Preact✓

Rendering

Virtual DOM

Bootstrap-

Preact✓

Signals / fine-grained reactivity

Bootstrap-

Preact-

SSR support

Bootstrap-

Preact✓

First-class TypeScript

Bootstrap-

Preact-

State

Built-in state management

Bootstrap-

Preact✓

Ecosystem

Official router

Bootstrap-

Preact✓

Performance

Runtime size

BootstrapSmall (10–40kb)

PreactTiny (<10kb)

What each one is

The product in its own terms, so the numbers below have context.

Bootstrap

An HTML, CSS, and JavaScript framework for building responsive web projects that prioritize mobile design and includes pre-built components for common interface elements.

Independently observed

Preact

Leader

A minimal virtual DOM framework providing React-style components and APIs, optimized for tiny bundle size and fast performance across modern browsers.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Bootstrap

Open sourceFree tier

Completely free and open source

as of 2026-09-14verify ↗

Preact

Leader

Open sourceFree tier

as of 2026-10-13verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Bootstrap	Preact
WebPlatforms	✓	✓
Cloud / SaaSDeployment	✓	-
Self-hostedDeployment	✓	-

Platforms

Web

Bootstrap✓

Preact✓

Deployment

Cloud / SaaS

Bootstrap✓

Preact–

Self-hosted

Bootstrap✓

Preact–

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Bootstrap

1 total

Popper

Independently observed

Preact

Leader

Not documented yet.

Still deciding?

Bootstrap or Preact: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.