| What it does | Fast data grid and pivot table for React and JavaScript with virtual scrolling and Web Worker support
| Test a used NVIDIA GPU's health in one command
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| Stage | Startup
| Startup
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| Founded | 2026
| Not given
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| Based in | Not given
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| Pricing model | Freemium
| Freemium
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| Pricing | Not given
| Health check: Free. Signed certificate: $29 USD per certificate.
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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
| - 10-minute sustained stress test
- Plain-language problem explanations
- Cryptographically signed certificates with Ed25519
- One-time server-issued challenge binding
- Public verification page for certificates
- Online revocation check
- Delete token for result removal
- Salted hash card identifier protection
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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
| - Open source under Apache-2.0 license with no account required
- Catches problems under sustained load that brief checks miss
- Server-side grading against healthy reference set prevents manipulation
- Privacy-preserving with salted hash identifiers and opt-in uploads
- Honest about limitations of certificate as proof
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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 |
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| DR (Domain Rating by Ahrefs) | 36 ▼ −1 (down) since last check | Not checked yet ● no change since last check |
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| Trust Flow (Majestic) | 6 | 0 |
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| Citation Flow (Majestic) | 28 | 0 |
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| Referring domains (Majestic) | 26 | 0 |
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KanuniLabs
gpucheck