Beamline code lives in your repo; your app never depends on Beamline servers at runtime. Build your own style from any look with public tokens, fonts, radii, density and motion. The comparison with Mantine is about which parts of your app you want to assemble yourself and which complete screens you want to start with.

What is free

Mantine is an MIT-licensed React component and hooks library. Inputs, switches, dialogs and other basic controls are free. Its own site also provides agent skills, LLM documentation and an MCP server for component documentation, props and search. Agent tooling is not exclusive to paid kits.

Choose Mantine when its controls, hooks and styling fit your app and you want to compose the screens yourself. You do not need to buy Beamline to get basic form controls. shadcn/ui is another free starting point with editable code in your project.

What Beamline's launch price buys

The $49 launch price buys 50+ complete screens and the parts they share, with consistent styling and an agent workflow across the collection. These are concrete examples of the UI behaviour you can connect to your app:

Screen or part	What is already handled
Settings	Validation and a draft that stays in place when your save handler fails, with a retry. Also in the free sample.
Data grid	Sorting, filtering, selection, keyboard navigation and inline editing. An individual part, counted separately from complete screens.
Trading terminal	Coordinated book, chart, order ticket and positions, wired to your market feed and account handlers.
Agent workspace	Threads, streamed run content, plans, approvals and artifacts around your agent's actions.

The workflow is mapping → install → audit: map each field and pattern to the right part, install the required parts into your repo and audit the implementation. The free sample includes the same workflow; payment unlocks the complete collection. Your application still owns the backend, saved data, permissions, trading execution and AI runtime (connect your data).

One payment covers your whole team, including employees and contractors, with no seats. Lifetime updates means new versions of the complete system for as long as we publish it. Separate add-on packs may be sold separately and are not updates; received versions remain licensed if publication ends. The pricing page and licence give the full terms.

Try the behaviour before choosing

Use Beamline's free Settings screen with your own save handler. Edit a field, make the save fail, and retry the same draft when your backend recovers. That lets you judge the behaviour you would otherwise compose from individual controls. The sample also includes the profile screen and their parts, under MIT.

If Mantine already serves your app well, keep it. Evaluate one screen at a time. Beamline's compiled parts can run inside their own UIRoot; Install explains the boundary. With either route, retain your data and handlers. Beamline's editable source and custom style files stay local; Customise covers rebuilding the style around your own design. Paid Beamline packs remain licensed code and cannot be redistributed on their own.

For paid blocks and templates built around shadcn/ui, see Shadcnblocks. For another kit with a free base and paid collection, see Untitled UI.

Sources

Read on 11 October 2026:

Mantine: components, hooks and agent tools, MIT licence.
Beamline: the catalog and linked screen/part specs above, agent workflow, pricing, licence and known limitations.