#1
Argo CD

Argo CD

★★★★★ 4.6 Free Free plan

Declarative GitOps continuous delivery tool for Kubernetes that automatically syncs application deployments from Git repositories to target clusters.

gitopsauto-syncdrift-detectionmulti-cluster
✓ True GitOps workflow with Git as single source of truth✓ Beautiful UI for visualizing application state✓ Automatic drift detection and sync
#2
Pulumi

Pulumi

★★★★ 4.4 Free / $50+ Free plan

Infrastructure-as-code platform that lets developers define cloud infrastructure using familiar programming languages like TypeScript, Python, Go, and C# instead of DSLs.

programming-languagesmulti-cloudstate-managementpolicy-as-code
✓ Use real programming languages instead of DSLs✓ Strong typing and IDE support for infrastructure code✓ Multi-cloud support with consistent API
#3
Kong

Kong

★★★★ 4.3 Free / $0.05+ Free plan

Cloud-native API gateway and service connectivity platform offering traffic management, security, observability, and plugin extensibility for microservices architectures.

api-gatewayservice-meshload-balancingauthentication
✓ Open-source core with large plugin ecosystem✓ Sub-millisecond latency for API requests✓ Platform-agnostic deployment (cloud, on-prem, hybrid)

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