---
title: "Flipper"
pageType: "tool-profile"
schemaVersion: "1.0"
snapshotId: "tv-20260915-f4c107995a2e"
generatedAt: "2026-09-15T07:02:20.000Z"
canonicalUrl: "https://toolvitals.com/tools/flipper/"
jsonUrl: "https://toolvitals.com/api/agent/tools/flipper"
indexable: true
---

# Flipper

Open-source feature flag management library and UI for Ruby applications.

## Decision context

- Status: active
- ToolVitals score: 85/100
- Health score: 88/100
- Shipping score: 82/100
- Score mode: verdict
- Data confidence: 90/100
- Source coverage: 90/100
- Last evidence check: 2026-09-15

## Classification

- Use case: Feature Flag Management (feature-flag-management)
- Category: DevOps (devops)
- Tool mode: Library Framework
- Openness: OSI-approved OSS
- License: MIT
- Tags: feature-flags, ruby, experimentation, open-source, api, dalli, feature, feature-flag, feature-flagging, feature-toggle, feature-toggles, features, flipper, http, memcached, mongo

## Public repository signals

- Repository: [flippercloud/flipper](https://github.com/flippercloud/flipper)
- Stars: 3967 (adoption context only)
- Forks: 442
- Open issues: 33
- Last commit date: 2026-09-11
- Releases in 90 days: 0

## Source receipts

- [Official website](https://flippercloud.io/) — checked 2026-09-15
- [Source repository](https://github.com/flippercloud/flipper) — checked 2026-09-15

## Discovery status

- Search indexable: yes
- Reason: sufficient tool evidence

## Interpretation limits

- ToolVitals scores summarize bounded public maintenance, shipping, openness, and evidence signals. They are not user-review ratings.
- GitHub stars and related popularity metrics are adoption context, not quality evidence.
- Missing values mean not collected or not confidently established; they do not mean zero.
- Public signals do not prove security, uptime, support quality, customer satisfaction, or production suitability.
- Verify material decisions against the linked first-party sources and your own requirements.