Comparison

Astro vs Bootstrap

No clear leader: Astro (71.9) and Bootstrap (68.5) are within the 5-point margin; treat as a tie. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.

Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
Astro72
Bootstrap69
Score
vioscaleAI score
Astro72 / 100medium · 57%
Bootstrap69 / 100high · 80%
Pricing
Free tier
Astro✓
Bootstrap✓
Model
Price level
Astrofree
Bootstrapfree
Transparent
Astro–
Bootstrap✓
Integrations
Count
Astro18
Bootstrap1
Adoption
Dependent repos
Astro18,705
Bootstrap874,564
Github stars
Astro63,201
Bootstrap174,840
Package downloads weekly
Bootstrap5,884,932
Activity
Commits last 30d
Astro100
Bootstrap93
Release
Cadence days
Astro–
Bootstrap49
History
Bootstrap20 items
License
Spdx
AstroMIT
BootstrapMIT
Language
Primary
BootstrapMDX
Content
Faq
Astro7 items
Bootstrap8 items

Capabilities

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

Core
Paradigm
AstroServer-first JavaScript framework
BootstrapCSS and JavaScript component library
Reusable component model
Astro✓
Bootstrap✓
Rendering
Virtual DOM
Astro-
Bootstrap-
Signals / fine-grained reactivity
Astro-
Bootstrap-
SSR support
Astro✓
Bootstrap-
DX
First-class TypeScript
Astro✓
Bootstrap-
State
Built-in state management
Astro-
Bootstrap-
Ecosystem
Official router
Astro-
Bootstrap-
Performance
Runtime size
AstroTiny (<10kb)
BootstrapSmall (10–40kb)

What each one is

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

Astro

Astro is a web framework that prioritizes performance through server-side rendering and sends minimal JavaScript to browsers. It features an island architecture for selective interactivity, supports all major UI frameworks, and produces zero unnecessary JavaScript by default.

Independently observed

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

Pricing

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

Astro

Open sourceFree tier
as of verify ↗

Bootstrap

Open sourceFree tier

Completely free and open source

as of verify ↗

Platform & deployment

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

Platforms
Web
Astro✓
Bootstrap✓
Deployment
Cloud / SaaS
Astro✓
Bootstrap✓
Self-hosted
Astro✗
Bootstrap✓

Integrations

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

Astro

21 total
  • React
  • Vue
  • Svelte
  • Tailwind CSS
  • Vercel
  • Cloudflare Workers
  • Node.js
  • Prism
  • MDX
  • Sitemap
  • Starlight
  • Sentry
  • UnoCSS
  • Expressive Code
  • astro-icon
  • astro-seo
  • Fathom Analytics
  • Feedback Fish
  • Cloudflare
  • Sonda
  • Solid
Independently observed

Bootstrap

1 total
  • Popper
Independently observed
Still deciding?

Astro or Bootstrap: 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.