Stencil is a tool for building modern Web Components. It combines the best concepts of the most popular front-end frameworks into a...
Best FAST Alternatives ranked by AI · updated Aug 2026
FAST is Microsoft's Web Component system for building accessible, themeable interfaces with design-system primitives. It is aimed at enterprise teams that need reusable components, design tokens, and framework interoperability.
Top 6 FAST alternatives
Lion is a comprehensive project management software designed to streamline team collaboration and task management.
$99/month
Minze is a lightweight JavaScript framework for building standards-based Web Components. It provides reactive properties, lifecycle hooks, templating, scoped styling, and component...
Pros
- Smaller and less opinionated than Lit or Stencil
- Provides reactive properties and lifecycle helpers on top of Custom Elements
- Supports scoped component styles and slots
Cons
- Smaller ecosystem and community than Lit or Stencil
- Less mature tooling and documentation than larger Web Component frameworks
- Fewer integrations and production examples than FAST
Free, open source
Shoelace is an open-source library of framework-agnostic, accessible web components for developers building custom web interfaces. It provides ready-made controls such as...
Pros
- Framework-agnostic components work with vanilla HTML, React, Vue, Angular, and other stacks
- Broad component collection with built-in accessibility and keyboard support
- Customizable visual styling through CSS custom properties and design tokens
Cons
- Upstream development has moved toward Web Awesome, creating uncertainty for new Shoelace-based projects
- Visual defaults are less aligned with established systems than Material, Spectrum, or Carbon
- Smaller ecosystem and community than major vendor-backed component libraries
Free, open source
Bredbandskollen is a free Swedish web service for measuring internet download and upload speeds, latency, and connection quality. It is designed for...
Pros
- Swedish-focused results and guidance are more relevant locally than Speedtest
- Measures download, upload, and latency without requiring an account
- Provides tools for documenting broadband performance to providers
Cons
- Less internationally recognized than Speedtest
- Fewer server-selection and historical-analysis features than Speedtest
- Primarily optimized for Swedish users and broadband connections
6
Google
Lit
Lit is an open-source library for building fast web components with tagged templates and reactive properties. It is suited to teams that...
Pros
- Uses standard Web Components that can run without a framework
- Provides reactive updates and templating with a small runtime
- Components can be shared across React, Vue, and plain HTML projects
Cons
- Web Components add lifecycle and interoperability concepts Eredom avoids
- Smaller general-purpose ecosystem than React or Vue
- Requires browser-platform knowledge for advanced component work
Free, open source
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