Comparison

Flux CD vs Semaphore

On the evidence we track, Semaphore leads this comparison with a composite score of 68/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Flux CD full profile →Semaphore full profile →

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Flux CD56

★Semaphore68

Attribute comparison across 2 tools
Attribute	Flux CD	SemaphoreLeader
Vioscale score	56 / 100low · 49%	68 / 100medium · 71%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	open_source	freemium
Price levelpricing.price_level	free	low
Transparentpricing.transparent	-	✓
Integrations
Countintegrations.count	25	1
Security
Disclosure policysecurity.disclosure_policy	✓	-
Gdprsecurity.gdpr	✓	-
Iso27001security.iso27001	-	✓
Pcisecurity.pci	-	✓
Scorecardsecurity.scorecard	8.8	-
Soc2security.soc2	-	✓
Vulnerabilitiessecurity.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	-
Reliability
Status pagereliability.status_page	-	✓
Adoption
Dependent reposadoption.dependent_repos	10	-
Github starsadoption.github_stars	5,395	-
Activity
Commits last 30dactivity.commits_last_30d	10	-
Release
Cadence daysrelease.cadence_days	50	-
Historyrelease.history	20 items	-
License
Spdxlicense.spdx	Apache-2.0	-
Language
Primarylanguage.primary	Go	-
Market
Availabilitymarket.availability	Available worldwide	-

Score

Vioscale score

Flux CD56 / 100low · 49%

Semaphore68 / 100medium · 71%

Pricing

Free tier

Flux CD✓

Semaphore✓

Model

Flux CDopen_source

Semaphorefreemium

Price level

Flux CDfree

Semaphorelow

Transparent

Flux CD–

Semaphore✓

Integrations

Count

Flux CD25

Semaphore1

Security

Disclosure policy

Flux CD✓

Semaphore–

Gdpr

Flux CD✓

Semaphore–

Iso27001

Flux CD–

Semaphore✓

Pci

Flux CD–

Semaphore✓

Scorecard

Flux CD8.8

Semaphore–

Soc2

Flux CD–

Semaphore✓

Vulnerabilities

Flux CDCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Ffluxcd%2Fflagger&per_page=100 · Last 12m: 0

Semaphore–

Reliability

Status page

Flux CD–

Semaphore✓

Adoption

Dependent repos

Flux CD10

Semaphore–

Github stars

Flux CD5,395

Semaphore–

Activity

Commits last 30d

Flux CD10

Semaphore–

Release

Cadence days

Flux CD50

Semaphore–

History

Flux CD20 items

Semaphore–

License

Spdx

Flux CDApache-2.0

Semaphore–

Language

Primary

Flux CDGo

Semaphore–

Market

Availability

Flux CDAvailable worldwide

Semaphore–

Capabilities

Feature-by-feature on the axes that matter for ci/cd tools. “-” means undocumented, not absent.

Capability comparison for CI/CD Tools
Capability	Flux CD	Semaphore
Deployment
Hosting	Cloud + self-hosted	-
Self-hosted runners	✓	✓
Core
Config-as-code pipelines	✓	✓
Matrix / parallel builds	-	✓
Build
Container-native builds	✓	✓
Performance
Build caching	-	-
Security
Secrets management	✓	-
Delivery
Deployment environments & approvals	✓	-
Ecosystem
Reusable actions / marketplace	-	-

Deployment

Hosting

Flux CDCloud + self-hosted

Semaphore-

Self-hosted runners

Flux CD✓

Semaphore✓

Core

Config-as-code pipelines

Flux CD✓

Semaphore✓

Matrix / parallel builds

Flux CD-

Semaphore✓

Build

Container-native builds

Flux CD✓

Semaphore✓

Performance

Build caching

Flux CD-

Semaphore-

Security

Secrets management

Flux CD✓

Semaphore-

Delivery

Deployment environments & approvals

Flux CD✓

Semaphore-

Ecosystem

Reusable actions / marketplace

Flux CD-

Semaphore-

What each one is

The product in its own terms, so the numbers below have context.

Flux CD

Continuous delivery solution for Kubernetes that enables GitOps workflows through automatic reconciliation from Git. A CNCF Graduated project.

Independently observed

Semaphore

Leader

An all-in-one continuous integration and delivery system that enables teams to automate testing and deployment workflows. It supports containerized and cloud-native architectures and can be deployed as a managed cloud service or self-hosted.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Flux CD

Open sourceFree tier

as of 2026-08-13verify ↗

Semaphore

Leader

from $0.00/moUsage-basedFree tier

Pay-per-minute metered compute: $0.0025/min (self-hosted) to $0.09/min (MacOS). Includes 20 concurrent jobs, $15/month free credits, 9.6 GB cache, and free support. Optional modular support and success services.

Compute - Ubuntu ARM$0.003–$0.012/min depending on vCPU
Compute - Ubuntu x64$0.0075–$0.015/min depending on vCPU
Compute - MacOS$0.09/min
Compute - Self-Hosted$0.0025/min

as of 2026-08-03verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Flux CD	Semaphore
WebPlatforms	✗	✓
CLIPlatforms	✓	✗
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✓

Platforms

Web

Flux CD✗

Semaphore✓

CLI

Flux CD✓

Semaphore✗

Deployment

Cloud / SaaS

Flux CD✓

Semaphore✓

Self-hosted

Flux CD✓

Semaphore✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Flux CD

25 total

GitHub
GitLab
Bitbucket
AWS S3
AWS EKS
AWS KMS
Azure
Azure Key Vault
Azure AKS
Azure DevOps
Azure Event Hubs
Google Cloud Artifact Registry
Google Cloud Storage
Google Cloud Key Management Service
Google Kubernetes Engine
Google Cloud Pub/Sub
Slack
Google Chat
Kustomize
Helm
Harbor
Flagger
OCI
SOPS
+1 more

Independently observed

Semaphore

Leader

1 total

Flowdock

Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.