# open-source-labs/Reactime

Developer tool for time travel debugging and performance monitoring in React applications.

Repository: https://github.com/open-source-labs/Reactime
Canonical: https://ross.abutalabs.com/products/reactime
Homepage: https://reactimetravel.github.io/reactime-website/
Language: TypeScript
License: MIT
License Family: permissive
Topics: reactjs, gatsby, nextjs, rendering, renderer, time-travel, react-devtools, react-fiber, performance, devtools-extension, remixjs, accessibility, chrome-extension, state-management
Last push: 2026-08-20T04:24:21+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 8, longevity 100
- inputs: {"age_days": 2602, "days_push": 13, "days_rel": 603, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2239, forks 210 (observed 2026-08-28T04:06:29.674320+00:00)

## What it is
Reactime is an open-source Chrome extension for React applications that provides time-travel debugging through state snapshots and comprehensive performance monitoring. It visualizes component graphs, state history diffs, web metrics, and accessibility trees across React frameworks like Next.js, Gatsby, and Remix.

## Use cases
- time travel debugging for react apps
- record and replay react state changes
- monitor react component render performance
- visualize react component tree and props
- debug react context providers and consumers
- inspect accessibility tree per state change
- diff react state snapshots over time
- export and share react state history

## When to choose
- debugging complex stateful React applications
- tracking down render performance issues in React
- inspecting how state evolves across user interactions
- auditing accessibility of React apps per state change
- working with Next.js, Gatsby, Remix, or Recoil

## When to avoid
- debugging non-React frontend frameworks
- production monitoring rather than local development
- non-Chromium browsers without extension support
- backend or server-side-only debugging

## Facets
- artifact type: plugin
- maturity: active
- function: developer-tools, monitoring, state-management
- domain: frontend, web-development, developer-tools, accessibility
- platform: browser-extension, browser
- tags: react, time-travel-debugging, performance-monitoring, devtools, chrome-extension, state-snapshots, accessibility-tree, nextjs, gatsby, remix, debugging

## Member repositories
- open-source-labs/Reactime (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:29.674320+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 2026-08-30T02:44:10.222744+00:00, confidence not recorded.
  - readme: https://github.com/open-source-labs/Reactime (fetched 2026-08-28T04:06:29.674320+00:00, sha 02168e795b56)
  - homepage: https://reactimetravel.github.io/reactime-website/ (fetched 2026-08-29T10:24:40.763366+00:00, sha 9f7fc617e157)
- Data as of 2026-08-30T08:39:29.467469+00:00.