barba.js vs mo · js

barba.js

• Developers adding animated transitions to an existing multi-page website
• Front-end developers who want to reduce page-load delay without rebuilding as a full single-page app
• Designers working with developers on motion-heavy marketing or portfolio sites
• Developers who want custom code that runs on specific pages through its View system

mo · js

• Front-end developers who want decorative animated effects like bursts, shapes, or icon animations
• Developers who already use a bundler such as webpack or rollup and want to install via npm
• Designers working with a developer who wants more customizable motion on the web
• Teams who want to add small visual flourishes to a page without a large animation framework

barba.js

• Small footprint, which the README states as about 7kb minified and compressed
• Clear documentation site with user guide, API reference, and examples
• Uses MIT license and has a large star count and an active release (v2.10.3)

mo · js

• The README describes a declarative API that gives fine control over animation.
• Ships with built-in components such as html, shape, swirl, burst, and stagger to start quickly.
• Installable via npm or a CDN, and the README notes support for bundler optimizations like tree shaking.

barba.js

• People who need a full application framework; the README positions Barba as a transition library, not a complete app framework
• Beginners with no HTML, CSS, or JavaScript experience, since the README says it assumes intermediate knowledge
• Projects that cannot use ES6+ syntax, because the README says all code examples use it, and a legacy example is provided separately

mo · js

• People who need a no-code tool, since mo·js requires writing JavaScript
• Projects that must support older or unlisted browsers, since the README lists minimum versions and says others are not extensively tested
• Developers looking for a general-purpose UI framework, since the README describes it as a motion library

barba.js

• Last push date in the metadata is December 2024, so check current maintenance status before relying on it
• The README is truncated and says little about browser support details beyond linking to the docs

mo · js

• The README lists specific browser minimums (for example Chrome 49+, Safari 8+) and says other browsers are not extensively tested.
• The README does not document its own learning curve; learning resources are largely external tutorials and a separate API documentation site.
• The project's primary language is CoffeeScript per repository metadata, which may matter if you plan to read or modify the source.