# laixintao/flameshow

A terminal Flamegraph viewer.

Repository: https://github.com/laixintao/flameshow
Canonical: https://ross.abutalabs.com/products/flameshow
Language: Python
License: MIT
License Family: permissive
Topics: flamegraph, golang, pprof, perf, performance-analysis, profiling
Last push: 2026-03-30T03:38:36+00:00

## Health v2 (maintenance only)
Score: 51/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 74, release rhythm 8, longevity 76
- inputs: {"age_days": 1074, "days_push": 156, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1127, forks 22 (observed 2026-08-28T04:03:41.364886+00:00)

## What it is
Flameshow is a terminal-based Flamegraph viewer written in Python that renders and lets you interactively explore profiling data. It supports Golang pprof, Brendan Gregg's collapsed-stack flamegraphs, and Python Austin profiles, with keyboard and mouse navigation.

## Use cases
- view a golang pprof goroutine dump in the terminal
- interactively zoom into flamegraph spans from the command line
- analyze CPU profiling output without a browser
- inspect python austin profiler output in a TUI
- render collapsed-stack flamegraph files in a terminal

## When to choose
- you profile servers over SSH and want flamegraphs without a GUI or browser
- you work with golang pprof dumps and want quick terminal inspection
- you prefer keyboard-driven TUI tools for performance analysis

## When to avoid
- you need rich web-based flamegraph features like diffing or search across large profiles
- your profiler emits an unsupported format and you cannot convert it
- you need a GUI with persistent sharing or embedding of flamegraphs

## Facets
- artifact type: cli-tool
- maturity: active
- function: cli, developer-tools, data-visualization
- domain: developer-tools, performance
- platform: cli, windows, cross-platform
- tags: flamegraph, pprof, profiling, tui, terminal-ui, command-line, linux, macos

## Member repositories
- laixintao/flameshow (main) score 51

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:41.364886+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:38:49.524625+00:00, confidence not recorded.
  - readme: https://github.com/laixintao/flameshow (fetched 2026-08-28T04:03:41.364886+00:00, sha ef0d65507db7)
  - registry_pypi: https://pypi.org/pypi/flameshow/json (fetched 2026-08-29T12:43:28.753446+00:00, sha 504632a6bcb3)
- Data as of 2026-08-30T08:39:29.467469+00:00.