Uptime, logs, and incident management.
SecretOps platform for teams.
4.7(200)Free - $8/seat/mo Monitoring as code for developers.
Build, share, and run containers.
4.6(4,000)Free - $9/user/mo Fast remote Docker image builds.
Open-source vulnerability and config scanner.
Cloud-native package and artifact registry.
Open-source dashboards and observability.
Open-source metrics and alerting.
GitOps continuous delivery for Kubernetes.
The complete DevSecOps platform.
4.5(800)Free - $29/user/mo Multi-cluster Kubernetes management.
The package manager for Kubernetes.
HashiCorp Vault
HashiCorp (IBM)
Secrets management and data protection
Like Prometheus, but for logs.
On-call and alerting by Atlassian.
4.5(800)Free - $11/user/mo Lightweight container management UI.
Cloud monitoring and observability.
Incident response and on-call.
4.5(900)Free - $21/user/mo CI/CD built into GitLab.
4.4(500)Free - $29/user/mo The Kubernetes IDE.
4.4(500)Free - $19.95/user/mo 
Sonatype Nexus Repository
Sonatype
Artifact repository manager.
Open-source Kubernetes app delivery platform.
Cost monitoring and optimization for Kubernetes.