# Flagger - **Canonical URI:** https://www.vioscale.ai/software/flagger - **Category:** Gitops - **Homepage:** https://flagger.app/ - **Also known as:** flagger - **Profile claimed by vendor:** no - **Last updated:** 2026-08-26T19:28:16.082Z ## Vioscale score **45.2 / 100**, confidence 28% (low). Computed 2026-09-01. _(updating — computed under an earlier model version or past its freshness window.)_ Composite of weighted, independently-sourced signals (no user reviews, no vendor payment). | Signal | Score | Weight | Contribution | Evidence present | |---|--:|--:|--:|:--:| | capabilities | 0 | 0.07844444444444446 | 0 | - | | repo_stars | 70.4 | 0.026 | 1.8 | ✓ | | integrations | 32 | 0.07033333333333334 | 2.3 | ✓ | | dependent_projects | 17.4 | 0.063 | 1.1 | ✓ | | dev_activity | 32.8 | 0.094 | 3.1 | ✓ | | release_cadence | 72.2 | 0.052 | 3.8 | ✓ | | security_posture | 0 | 0.073 | 0 | - | | package_downloads | 0 | 0.136 | 0 | - | | security_score | 88 | 0.042 | 3.7 | ✓ | | community_qa_activity | 0 | 0.063 | 0 | - | ## Pricing _As of 2026-08-19, [verify at source](https://flagger.app/). Independently observed._ Open source ## About Infrastructure automation tool for Kubernetes that manages staged application releases using canary deployments, A/B testing, or blue-green strategies. It progressively shifts traffic to new versions while monitoring system health and running conformance tests to minimize production risk. _Independently observed._ ## Platform & deployment - **Deployment:** Cloud / SaaS, Hybrid, On-premise, Self-hosted ## Integrations (12) _Independently observed._ - Istio - Linkerd - Kuma - Knative - nginx - contour - gloo - traefik - skipper - Apache APISIX - Gateway API - Slack ## Release history | Version | Date | Type | |---|---|---| | [v1.44.0](https://github.com/fluxcd/flagger/releases/tag/v1.44.0) | 2026-07-21 | stable | | [v1.43.0](https://github.com/fluxcd/flagger/releases/tag/v1.43.0) | 2026-04-21 | stable | | [v1.42.0](https://github.com/fluxcd/flagger/releases/tag/v1.42.0) | 2025-10-16 | stable | | [v1.41.0](https://github.com/fluxcd/flagger/releases/tag/v1.41.0) | 2025-04-02 | stable | | [v1.40.0](https://github.com/fluxcd/flagger/releases/tag/v1.40.0) | 2024-12-17 | stable | | [v1.39.0](https://github.com/fluxcd/flagger/releases/tag/v1.39.0) | 2024-11-26 | stable | | [v1.38.0](https://github.com/fluxcd/flagger/releases/tag/v1.38.0) | 2024-07-30 | stable | | [v1.37.0](https://github.com/fluxcd/flagger/releases/tag/v1.37.0) | 2024-03-26 | stable | | [v1.36.1](https://github.com/fluxcd/flagger/releases/tag/v1.36.1) | 2024-03-06 | stable | | [v1.36.0](https://github.com/fluxcd/flagger/releases/tag/v1.36.0) | 2024-02-07 | stable | | [v1.35.0](https://github.com/fluxcd/flagger/releases/tag/v1.35.0) | 2023-11-30 | stable | | [v1.34.0](https://github.com/fluxcd/flagger/releases/tag/v1.34.0) | 2023-10-04 | stable | | [v1.33.0](https://github.com/fluxcd/flagger/releases/tag/v1.33.0) | 2023-08-29 | stable | | [v1.32.0](https://github.com/fluxcd/flagger/releases/tag/v1.32.0) | 2023-07-14 | stable | | [v1.31.0](https://github.com/fluxcd/flagger/releases/tag/v1.31.0) | 2023-05-10 | stable | _… and 5 earlier release(s)._ ## Security & compliance Known vulnerabilities: 0 (0 in the last 12 months) ([source](https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Ffluxcd%2Fflagger&per_page=100)). A count reflects scale and disclosure, not quality. ## Facts Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule. ### integrations | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | integrations.count | 12 | [link](https://flagger.app/) | 2026-08-19 | 60% (medium) | ### pricing | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | pricing.model | open_source | [link](https://flagger.app/) | 2026-08-19 | 60% (medium) | | pricing.price_level | free | [link](https://flagger.app/) | 2026-08-19 | 60% (medium) | | pricing.transparent | yes | [link](https://flagger.app/) | 2026-08-19 | 60% (medium) | ### activity | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | activity.commits_last_30d | 10 | [link](https://github.com/fluxcd/flagger/pulse) | 2026-08-26 | 65% (medium) | ### adoption | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | adoption.github_stars | 5,395 | [link](https://github.com/fluxcd/flagger) | 2026-08-26 | 90% (high) | | adoption.dependent_repos | 10 | [link](https://packages.ecosyste.ms/api/v1/packages/lookup?repository_url=https%3A%2F%2Fgithub.com%2Ffluxcd%2Fflagger) | 2026-08-26 | 85% (high) | ### language | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | language.primary | Go | [link](https://github.com/fluxcd/flagger) | 2026-08-26 | 90% (high) | ### license | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | license.spdx | Apache-2.0 | [link](https://github.com/fluxcd/flagger) | 2026-08-26 | 95% (high) | ### release | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | release.cadence_days | 50 | [link](https://github.com/fluxcd/flagger/releases) | 2026-08-26 | 70% (medium) | ### security | Attribute | Value | Source | Retrieved | Confidence | |---|---|---|---|---| | security.scorecard | 8.8 | [link](https://api.securityscorecards.dev/projects/github.com/fluxcd/flagger) | 2026-08-26 | 90% (high) | | security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Ffluxcd%2Fflagger&per_page=100","last_12m":0,"max_severity":null}` | [link](https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Ffluxcd%2Fflagger&per_page=100) | 2026-08-26 | 90% (high) | --- *Source: Vioscale (https://www.vioscale.ai/software/flagger). Independent, evidence-based software intelligence. Cite the canonical URI.*