# ReUI vs ssych

> ReUI and ssych both extend shadcn/ui for dense screens. What each covers, where ReUI is the better pick, and where ssych fits trading. Checked 9 Nov 2026.

ReUI and ssych both add to shadcn/ui and both install through the shadcn CLI. ReUI, made by Keenthemes, is a large kit for app screens with a strong data grid. ssych is a smaller library built around trading, crypto and AI operator screens. Here is how they compare.

Facts about other libraries checked on 9 November 2026 (2026-11-09); sources at the end.

## Short answer

Pick ReUI for admin and SaaS apps that need a lot of blocks and a serious data grid. Pick ssych when the product is a trading or crypto screen and needs an order book, a depth chart or candles with volume. Both install through the shadcn CLI, so they work in one project.

## Side by side

| | ReUI | ssych |
|---|---|---|
| What it is | 1,264 free components, 27 custom primitives and 678 Pro blocks | 116 free components, plus paid dashboard screens and landing pages |
| Charts drawn with | Recharts v3: 25 chart examples, bar, area, line, donut, pie, radar, radial | Plain SVG, no chart library |
| Data grid | TanStack Table grid with sorting, filtering, virtualised rows and columns, row pinning, tree rows and inline editing | Trading tables with fixed layouts: positions, holdings, journal, blotter. No virtualisation |
| Trading parts | Crypto price cards, portfolio lists and balance charts as Pro blocks; no candlestick or order book in its catalogue | Order book, depth chart, candlestick with volume, trade tape, order and leverage tickets |
| For coding agents | Its own free MCP server and agent skills | The shadcn registry and MCP, plus a plain text page for every component |
| License | MIT for free components; Pro blocks need a licence | MIT for components; paid screens under a commercial licence |
| Price | Free tier; Pro from $249, paid once | Components free; full screens paid, yearly or lifetime |
| Community | 4.0k GitHub stars | New in 2026, one maintainer, a small community |

## Where ReUI is the better pick

- Far more to pick from: over a thousand free components and 678 Pro blocks.
- A real data grid, with virtualised rows and columns, row pinning, tree rows and inline editing.
- Its own MCP server and agent skills.
- Pro is a one time payment.

## Where ssych fits better

- Trading parts ReUI does not list: order book, depth chart, candlestick with volume, a time and sales tape and order tickets.
- Charts with no chart runtime. The SVG is in the file you install.

## The ssych parts

- Order Book: `npx shadcn@latest add @ssych/order-book` (https://ssych.com/library/order-book.md)
- Candlestick Chart: `npx shadcn@latest add @ssych/candlestick` (https://ssych.com/library/candlestick.md)
- Depth Chart: `npx shadcn@latest add @ssych/depth-chart` (https://ssych.com/library/depth-chart.md)
- Positions Table: `npx shadcn@latest add @ssych/positions-table` (https://ssych.com/library/positions-table.md)
- Trade Tape: `npx shadcn@latest add @ssych/trade-tape` (https://ssych.com/library/trade-tape.md)
- Order Ticket: `npx shadcn@latest add @ssych/order-ticket` (https://ssych.com/library/order-ticket.md)

## Questions

### Does ReUI have an order book or a candlestick chart?

Not on 9 November 2026. Its full catalogue (reui.io/llms-full.txt) has no candlestick, order book or depth chart. It does have crypto price cards, portfolio lists and balance charts as Pro blocks.

### Can I use ReUI and ssych in one project?

Yes. Both install with the shadcn CLI, each under its own name: @reui/<name> and @ssych/<name>.

## Sources

- reui.io, the homepage (counts, Pro price, MCP): https://reui.io/
- ReUI llms.txt (install rule, data grid): https://reui.io/llms.txt
- ReUI full catalogue, every block in one list: https://reui.io/llms-full.txt
- ReUI chart components, built on Recharts v3: https://reui.io/components/chart.md
- GitHub: keenthemes/reui: https://github.com/keenthemes/reui

Page: https://ssych.com/library/compare/reui-vs-ssych