# FlameGraph vs JSON Crack

## Key differences

- JSON Crack has 2.2× as many GitHub stars as FlameGraph (44.5K vs 19.8K).
- JSON Crack had more development activity over the last 12 months: 110 commits vs 0.
- FlameGraph is written primarily in Perl, JSON Crack in TypeScript.
- FlameGraph is the older project: its repository was created in 2011, JSON Crack's in 2022.
- FlameGraph has had no commits since Oct 20, 2024.

| | FlameGraph | JSON Crack |
|---|---|---|
| Description | Stack trace visualizer that generates interactive SVG flame graphs from profiling data. | Visualizes JSON, YAML, XML and CSV data as interactive graphs. |
| GitHub stars | 19,784 | 44,476 |
| Commits (12 months) | 0 | 110 |
| Contributors | 61 | 38 |
| License | – | Apache-2.0 |
| Language | Perl | TypeScript |
| Status | Inactive | Active |
| Install | – | – |

Source: https://awesomedataviz.com/compare/flamegraph-vs-json-crack/ · Data updated 2026-10-05 · Content: CC BY 4.0, Awesome Dataviz (https://awesomedataviz.com).