Bower was an early package manager aimed specifically at the browser. Its own site describes it as “a package manager for the web,” explicitly “optimized for the front-end.” Where npm originally focused on Node.js server-side modules, Bower managed the assets a web page needs directly: HTML, CSS, JavaScript, fonts, and images, handling installation and dependency resolution for those components.
For a stretch in the early-to-mid 2010s Bower was a common part of front-end workflows, often paired with task runners of the era. But the ecosystem moved. npm grew to serve front-end code well, Yarn arrived, and module bundlers changed how browser code is assembled and shipped, leaving Bower’s niche increasingly redundant.
Bower is now deprecated. Its own site carries the notice: “While Bower is maintained, we recommend using Yarn and Vite for front-end projects,” with a link to migration guidance. A tool that was once a default choice telling its users to move on is a clear example of how fast front-end tooling churns, and a caution about building on tools that may not last.