Tool Comparison Heatmap Skill

Create a polished, interactive React heatmap that compares tools/repos across user-defined features, scores each 0–100, links to repositories, shows last-update dates, and automatically crowns the winner(s).

When to Use

• User wants to compare multiple tools, repos, frameworks, extensions, or products
• User asks for a feature matrix, heatmap, scorecard, or ranking
• User wants to know "which is the best" across several criteria
• User mentions "Gewinner küren", "wer gewinnt", "score them", "rank", "compare features"

Research Phase

Before building the heatmap, gather accurate data:

1. Identify the tools the user wants to compare (aim for 5–30)
2. Define feature categories — ask the user or derive from context. Typical categories:

• Technical capabilities (e.g., multi-tab, parallel agents, self-healing)
• Ecosystem (e.g., BYOK, open source, MCP support, Chrome extension)
• Usability (e.g., no-code, voice, memory/persistence)
• Trust (e.g., privacy, license, community size)

3. Research each tool using web search:

• GitHub URL (exact, verified)
• GitHub stars (current count)
• Last meaningful update date (check releases page or recent commits)
• Feature support level per category

4. Score each feature 0–100 based on research:

• 85–100: Excellent / native support / best-in-class
• 65–84: Good / solid support with minor gaps
• 45–64: Partial / workaround needed / experimental
• 25–44: Weak / very limited
• 0–24: Missing / not applicable

Output Requirements

Generate a single .jsx React artifact with ALL of the following:

1. Data Structure

const tools = [
 {
 name: "Tool Name",
 github: "https://github.com/org/repo", // MUST be a real, verified URL
 stars: "~12.6k", // Current star count
 lastUpdate: "Apr 2026", // Last significant update
 type: "Chrome Extension / Framework / etc.",
 // Feature scores (0-100):
 feature1: 85,
 feature2: 40,
 // ... one key per feature
 // Notes per feature (optional, shown on click):
 notes: {
 feature1: "Detailed explanation of why this score...",
 },
 },
 // ... more tools
];

const features = [
 { key: "feature1", label: "Display Name", desc: "Tooltip description" },
 // ... more features
];

2. Interactive Table

• Sticky first column with tool name, type, stars, and last-update date
• Tool name is a clickable link → opens the GitHub repo in a new tab (target="_blank")
• Last update shown as subtle text below the name (e.g., "Letztes Update: Apr 2026")
• Stars shown as ⭐ ~12.6k
• Color-coded score cells: green (85+), teal (65-84), amber (45-64), red (0-44)
• Sortable columns: click any header to sort ascending/descending
• Click any cell → shows detail panel below with the note/explanation

3. Winner Badge

• Calculate average score (total) across all features for each tool
• Display a 🏆 trophy column or winner row at the top
• The tool with the highest average gets a visible 🏆 Gewinner badge
• If user asked for category winners, also show per-feature winners

4. Styling

• Use CSS variables for theming (works in light/dark mode)
• Font: import a distinctive Google Font (e.g., DM Sans, Plus Jakarta Sans)
• Monospace font for scores (e.g., JetBrains Mono)
• Alternating row backgrounds for readability
• Responsive horizontal scroll for many columns
• Frosted/blurred detail panel on cell click

5. Winner Summary Box

Below the table, add a colored summary box:

• 🏆 Gesamtsieger: [Tool Name] mit Ø [Score]/100
• List top 3 tools with their average scores
• Per-category leaders: Bester bei [Feature]: [Tool] ([Score])
• If the user's question had a specific focus (e.g., wer kann parallele Tab-Gruppen), highlight that category winner prominently

Template Code Structure

import { useState } from "react";

// 1. Data: tools[] and features[]
// 2. Calculate totals and winners
// 3. Render:
// - Header with title
// - Legend (color scale)
// - Sortable table with sticky column
// - Detail panel (on cell click)
// - Winner summary box

export default function ToolComparisonHeatmap() {
 const [sortKey, setSortKey] = useState("total");
 const [sortDir, setSortDir] = useState(-1);
 const [selected, setSelected] = useState(null);

 // ... sorting logic
 // ... render table with ScoreCell components
 // ... winner calculation and display
}

Critical Rules

1. Every GitHub link must be verified — search the web to confirm the URL exists. Never guess.
2. Last update date must be researched — check the repo's releases or commit history.
3. Stars must be current — use web search to find the latest count.
4. Tool names must be clickable links — use <a href={tool.github} target="_blank" rel="noopener noreferrer">.
5. Winner must be automatically calculated — not hardcoded.
6. The artifact must be a single .jsx file — no separate CSS files.
7. All text in the user's language — if user speaks German, labels/descriptions in German.

Example Invocations

• Vergleiche die 10 besten Browser-Extensions mit einer Heatmap
• Score these 5 AI coding tools across speed, accuracy, and cost
• Wer gewinnt bei Multi-Tab-Steuerung? Mach eine Vergleichstabelle
• Create a feature matrix of React state management libraries
• Rank these databases 1-100 on performance, scalability, and ease of use