Freemium
Docker
Open SourceContainers · DevOps
The container platform for building, sharing and running applications.
dockercontainersdevops
DevOps•Open Source•22 tools
Best Open Source DevOps Tools (22 Curated)
Discover the 22 best open-source tools for devops. Community-driven, transparent source code with permissive licenses. Curated, compared, and updated for developers.
Quick Comparison (22 Tools)
| Tool | Pricing | Platforms | Top Strength | Link |
|---|---|---|---|---|
| Docker | freemium | desktop, cli | Universal packaging — one image runs identically on laptop and prod | Details → |
| Podman | free | cli | Daemonless, rootless container engine, Docker-compatible CLI. | Details → |
| Kubernetes | free | cli, web | De-facto orchestration standard — portable across every cloud | Details → |
| Helm | free | cli | The package manager for Kubernetes applications. | Details → |
| K9s | free | cli | Terminal UI to interact with and manage Kubernetes clusters. | Details → |
| OpenTofu | free | cli | Open-source, Linux Foundation successor to Terraform. | Details → |
| Ansible | freemium | cli | Agentless automation for configuration management and deployment. | Details → |
| Pulumi | freemium | cli | Infrastructure as code in real programming languages. | Details → |
| Nginx | free | cli | Battle-tested reverse proxy/load balancer at any scale | Details → |
| Nginx Config Generator | free | web | DigitalOcean's visual generator for performant Nginx configs. | Details → |
Showing top 10 of 22. Browse the full grid below.
Free
Podman
Open SourceContainers · DevOps
Daemonless, rootless container engine, Docker-compatible CLI.
containerspodmandocker-compatible
Free
Kubernetes
Open SourceOrchestration · DevOps
The open-source system for automating container orchestration.
kubernetesk8sorchestrationcontainers
Free
Helm
Open SourceOrchestration · DevOps
The package manager for Kubernetes applications.
kuberneteshelmchartspackaging
Free
K9s
Open SourceOrchestration · DevOps
Terminal UI to interact with and manage Kubernetes clusters.
kubernetestuicli
Free
OpenTofu
Open SourceInfrastructure as Code · DevOps
Open-source, Linux Foundation successor to Terraform.
opentofuterraformiac
Freemium
Ansible
Open SourceInfrastructure as Code · DevOps
Agentless automation for configuration management and deployment.
ansibleautomationconfigurationredhat
Freemium
Pulumi
Open SourceInfrastructure as Code · DevOps
Infrastructure as code in real programming languages.
iactypescriptpythongo
Free
Nginx
Open SourceWeb Servers & Proxies · DevOps
High-performance web server, reverse proxy and load balancer.
nginxweb-serverproxyload-balancer
Free
Nginx Config Generator
Open SourceWeb Servers & Proxies · DevOps
DigitalOcean's visual generator for performant Nginx configs.
nginxconfiggenerator
Free
Apache HTTP Server
Open SourceWeb Servers & Proxies · DevOps
The classic, widely-used Apache web server.
apacheweb-serverhttpd
Free
Caddy
Open SourceWeb Servers & Proxies · DevOps
Web server with automatic HTTPS and simple configuration.
web-serverhttpsproxyacme
Freemium
Traefik
Open SourceWeb Servers & Proxies · DevOps
Cloud-native reverse proxy and ingress controller with auto discovery.
proxyingresskubernetesdocker
Free
Jenkins
Open SourceCI/CD · DevOps
The classic open-source automation server for CI/CD.
ci-cdautomationself-hosted
Free
Argo CD
Open SourceCI/CD · DevOps
Declarative GitOps continuous delivery for Kubernetes.
gitopskubernetescd
Free
Flux
Open SourceCI/CD · DevOps
GitOps toolkit for keeping Kubernetes clusters in sync with Git.
gitopskubernetescd
Freemium
Portainer
Open SourceContainers · DevOps
Self-hosted GUI for managing Docker and Kubernetes environments.
dockerkubernetesguiself-hosted
Free
Kustomize
Open SourceOrchestration · DevOps
Template-free customization of Kubernetes YAML manifests.
kubernetesconfigyaml
Free
Istio
Open SourceOrchestration · DevOps
The leading service mesh for traffic, security and observability.
service-meshkubernetesnetworking
Freemium
Kong
Open SourceWeb Servers & Proxies · DevOps
Popular open-source API gateway and microservices management.
api-gatewayproxyplugins
Freemium
Unleash
Open SourceFeature Flags · DevOps
Open-source feature flag platform you can self-host — strategies, gradual rollouts and an activation dashboard.
feature-flagsopen-sourceself-hosted
Freemium
Flagsmith
Open SourceFeature Flags · DevOps
Open-source feature flags and remote config with cloud or self-hosted deployment and per-environment targeting.
feature-flagsremote-configopen-source