Open source tools worth checking: May 22, 2026

A short open source tools roundup for Workollab readers. These are the tools worth testing, borrowing from, or keeping on your radar.

Open Source Tools

• GreptimeDB (OpenAlternative Tools)
  Cloud-native observability database unifying metrics, logs, and traces with sub-second queries, 50x cost reduction, and seamless OpenTelemetry integration.
• Woodpecker CI (OpenAlternative Tools)
  Open-source CI/CD platform using Docker containers for pipeline execution. Create multiple workflows, extend with plugins, and enjoy free lifetime access.
• Wachd (OpenAlternative Tools)
  Receive alerts from Grafana, Datadog, and Prometheus with AI-generated root cause analysis. Self-hosted on Kubernetes, fully air-gapped capable, Apache 2.0 licensed.