Comparison

Astro vs Bulma

On the evidence we track, Astro leads this comparison with a composite score of 72/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Astro full profile →Bulma full profile →

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

★Astro72

Bulma47

Attribute comparison across 2 tools
Attribute	AstroLeader	Bulma
vioscaleAI score	72 / 100medium · 57%	47 / 100high · 77%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	open_source	free
Price levelpricing.price_level	free	free
Integrations
Countintegrations.count	18	9
Security
Gdprsecurity.gdpr	✓	-
Scorecardsecurity.scorecard	-	2.9
Vulnerabilitiessecurity.vulnerabilities	Count: 25 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=astro&per_page=100 · Last 12m: 20 · Max severity: HIGH	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=bulma&per_page=100 · Last 12m: 0
Reliability
Status pagereliability.status_page	-	✓
Adoption
Dependent reposadoption.dependent_repos	18,705	64,999
Github starsadoption.github_stars	63,201	50,038
Package downloads weeklyadoption.package_downloads_weekly	7,314,180	366,730
Activity
Commits last 30dactivity.commits_last_30d	100	1
Release
Cadence daysrelease.cadence_days	-	113
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	MIT	MIT
Language
Primarylanguage.primary	TypeScript	CSS
Market
Availabilitymarket.availability	-	Available worldwide
Content
Faqcontent.faq	7 items	5 items

Score

vioscaleAI score

Astro72 / 100medium · 57%

Bulma47 / 100high · 77%

Pricing

Free tier

Astro✓

Bulma✓

Model

Astroopen_source

Bulmafree

Price level

Astrofree

Bulmafree

Integrations

Count

Astro18

Bulma9

Security

Gdpr

Astro✓

Bulma–

Scorecard

Astro–

Bulma2.9

Vulnerabilities

AstroCount: 25 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=astro&per_page=100 · Last 12m: 20 · Max severity: HIGH

BulmaCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=bulma&per_page=100 · Last 12m: 0

Reliability

Status page

Astro–

Bulma✓

Adoption

Dependent repos

Astro18,705

Bulma64,999

Github stars

Astro63,201

Bulma50,038

Package downloads weekly

Astro7,314,180

Bulma366,730

Activity

Commits last 30d

Astro100

Bulma1

Release

Cadence days

Astro–

Bulma113

History

Astro20 items

Bulma20 items

License

Spdx

AstroMIT

BulmaMIT

Language

Primary

AstroTypeScript

BulmaCSS

Market

Availability

Astro–

BulmaAvailable worldwide

Content

Faq

Astro7 items

Bulma5 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	Astro	Bulma
Core
Paradigm	Server-first JavaScript framework	Flexbox and Grid-based CSS component framework
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	Tiny (<10kb)	Small (10–40kb)

Core

Paradigm

AstroServer-first JavaScript framework

BulmaFlexbox and Grid-based CSS component framework

Reusable component model

Astro✓

Bulma✓

Rendering

Virtual DOM

Astro-

Bulma-

Signals / fine-grained reactivity

Astro-

Bulma-

SSR support

Astro✓

Bulma-

First-class TypeScript

Astro✓

Bulma-

State

Built-in state management

Astro-

Bulma-

Ecosystem

Official router

Astro-

Bulma-

Performance

Runtime size

AstroTiny (<10kb)

BulmaSmall (10–40kb)

What each one is

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

Astro

Leader

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

Bulma

A free, open-source CSS library providing pre-built components and utilities for constructing responsive web layouts. It uses Flexbox and CSS Grid as its foundation with CSS Variables for customization, requiring only a single CSS file and no JavaScript to get started.

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

Leader

Open sourceFree tier

as of 2026-10-13verify ↗

Bulma

FreeFree 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	Astro	Bulma
WebPlatforms	✓	✓
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✗	✓

Platforms

Web

Astro✓

Bulma✓

Deployment

Cloud / SaaS

Astro✓

Bulma✓

Self-hosted

Astro✗

Bulma✓

Integrations

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

In common (2)

React
Svelte

Astro

Leader

21 total - 19 not shared

Vue
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

Bulma

9 total - 7 not shared

Vue.js
Angular
Ember
Blazor
Elm
Django
Web Components

Independently observed

Still deciding?

Astro or Bulma: 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.