Bun vs Astro
A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.
Bun compared with Astro
| Detail | Bun | Astro |
|---|
| What it does | A fast all-in-one JavaScript runtime
| The web framework for content-driven websites
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| Stage | Not given
| Established
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| Founded | Not given
| Not given
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| Based in | Not given
| Not given
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| Pricing model | free
| free
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| Pricing | Not given
| Not given
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| Key features | - JavaScript and TypeScript runtime on JavaScriptCore
- Fast npm-compatible package manager
- Jest-compatible test runner
- Built-in bundler for TypeScript, JSX, CSS and HTML
- HTTP server with routing and WebSocket support
- PostgreSQL and Redis clients built-in
- S3-compatible object storage client
- Shell scripting with Bun.$
- Password hashing with argon2 and bcrypt
- Single-file executable compilation
| - Server-first rendering with lightweight HTML
- Content collections with TypeScript type-safety
- Zero JavaScript by default
- View transitions for page morphing and transitions
- Optimized images with modern formats
- File-based routing system
- Middleware for request handling
- Type-safe backend actions
- Deployment adapters for multiple platforms
- AI-ready with MCP server integration
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| What makes it different | - All-in-one toolkit combining runtime, package manager, test runner and bundler in one binary
- Up to 30× faster package installation than npm, yarn and pnpm
- Built-in batteries including HTTP, WebSockets, SQL, Redis, S3 and shell clients
- Significant memory efficiency compared to Node.js and Deno
- Full Node.js API compatibility with existing projects
| - Server-first architecture with zero unnecessary JavaScript overhead
- Islands optimization for best-in-class page load performance
- Zero lock-in with support for every major UI framework
- Works with content from any source without restrictions
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| Free plan | Not given
| Not given
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| Open source | Not given
| Not given
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| Platforms | Not given
| Not given
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| Public API | Not given
| Not given
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 83 ● no change since last check | 90 ● no change since last check |
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| Trust Flow (Majestic) | 36 | 48 |
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| Citation Flow (Majestic) | 53 | 66 |
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| Referring domains (Majestic) | 7711 | 31870 |
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4 details filled in for both companies.
More alternatives to Bun More alternatives to Astro