| What it does | Fast data grid and pivot table for React and JavaScript with virtual scrolling and Web Worker support
| 335+ free browser-based tools for developers, creators and professionals with no signup required
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| Stage | Startup
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| Founded | 2026
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| Based in | Not given
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| Pricing model | Freemium
| Free
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| Pricing | Not given
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| Key features | - Virtual scrolling: handles millions of rows with only visible rows in the DOM
- Web Worker offload for filtering and sorting above ~20,000 rows
- Columnar encoding with typed arrays for fast sorting and filtering
- Server-side data loading and filtering
- Sorting and filtering with custom comparators
- Inline editing with validation and lookups
- Multi-level grouping and master-detail views
- Excel and PDF export with styling
- Calculated columns with spreadsheet formulas
- Interactive charts and drill-down
| - 265 tools run entirely in browser with offline capability
- JSON, JWT and regex utilities
- AI API cost calculator for multiple LLM models
- PDF tools and converters
- Network diagnostic tools
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| What makes it different | - Free Community edition with no expiry, watermark or license key for commercial use
- Paid versions never expire or lock users out; shipped applications keep running without watermarks
- No license server; keys checked locally via public key compiled into the package
- Handles millions of rows efficiently with only the visible window rendered
| - Every tool page clearly labels whether it runs locally or needs a cloud connection
- No signup, no account, no credit card required for any tool
- 265 tools work completely offline with no data ever uploaded
- Privacy-first design with client-side processing and no data storage
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| Free plan | Not given
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| Open source | Not given
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| Platforms | Not given
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| Public API | Not given
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| Community votes | 0 | 0 |
| DR (Domain Rating by Ahrefs) | 37 ● no change since last check | 2 ▼ −1 (down) since last check |
| Trust Flow (Majestic) | 6 | 5 |
| Citation Flow (Majestic) | 28 | 27 |
| Referring domains (Majestic) | 26 | 23 |