Pick two. The table shows their rating, their Openness score and the facts behind it, each from the vendor's own pages.
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Open-source monitoring and observability platform. Turn data into real-time dashboards and alerts. Connects to many data sources including Prometheus, PostgreSQL, MySQL, and CloudWatch. Free open-source + Grafana Cloud free tier (10K metrics, 50GB logs, 50GB traces). Paid plans available.
Grafana is best for small businesses with a technical person on staff who needs to monitor servers, databases, or app performance in one place. The free tier is genuinely useful and connecting to 150+ data sources is a real strength, but setup is not beginner-friendly — you'll likely need someone comfortable with tech to get real value out of it. If you don't have that person, a simpler dashboard tool will save you a lot of frustration.
