Extend UI alternatives
12 tools on the radar in the same space as Extend UI.
Extend UI is an open-source React UI kit for document apps: PDF, DOCX, XLSX and CSV viewers and more.. The tools below share its categories (Open Source, UI Libraries). Most are still pre-launch, so you are comparing direction and early access rather than finished feature lists.
Lenis
LaunchedA lightweight smooth scroll library from the studio darkroom.engineering.
Motion
LaunchedAn animation library for React, JavaScript and Vue, formerly known as Framer Motion.
shadcn/ui
LaunchedAccessible React components you copy into your project and own, built on Radix and Tailwind CSS.
Tailwind CSS
LaunchedA utility-first CSS framework for building designs directly in your markup.
Jev Ultrafast
Betai. am. speed.
Aceternity UI
LaunchedThe React component library for beautiful landing pages.
Astro
LaunchedA web framework for content-driven sites that ships zero JavaScript by default.
Biome
LaunchedA fast formatter and linter for JavaScript, TypeScript, JSON and CSS in one tool.
Bun
LaunchedA fast JavaScript runtime, bundler, test runner and package manager in one binary.
Compositor
LaunchedThe Photoshop alternative for Mac
Convex
LaunchedA reactive backend where queries, mutations and schemas are written in TypeScript.
Copperhead
LaunchedAn open-source AI engineering platform for designing, verifying and shipping circuit boards.
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