Directory

7 tools

ClickHouse, Inc. · Analytical engines & OLAP

Open-source columnar OLAP database server for fast aggregations over billions of rows, with MergeTree storage, SQL and a managed ClickHouse Cloud

Apache-2.0Open sourceFreeLocalSelf-hostedNov 2, 2026

Elasticsearch

Elastic N.V. · Vector databases

Distributed search and analytics engine on Apache Lucene with full-text, aggregations, vector search and ES|QL; triple-licensed AGPL, SSPL and Elastic License

AGPL-3.0-only OR SSPL-1.0 OR Elastic-2.0Open sourceFreeSelf-hostedNov 2, 2026

Grafana

Grafana Labs · Monitoring & observability

Dashboarding and alerting platform that visualizes metrics, logs and traces from Prometheus, SQL databases and dozens of other data sources

AGPL-3.0-onlyOpen sourceFreemiumSelf-hostedNov 2, 2026

OpenSearch

OpenSearch Software Foundation (Linux Foundation) · Vector databases

Apache-2.0 search and analytics suite forked from Elasticsearch and Kibana, governed by the OpenSearch Software Foundation

Apache-2.0Open sourceFreeSelf-hostedBroken

PM2

Keymetrics (Unitech) · Infrastructure & provisioning

Production process manager for Node.js and other long-running programs with cluster mode, log handling, restart policies and boot-time startup scripts

AGPL-3.0-onlyOpen sourceFreeLocalSelf-hostedNov 2, 2026

Prometheus

Prometheus Authors / Cloud Native Computing Foundation · Monitoring & observability

Pull-based metrics monitoring system and time-series database with the PromQL query language, service discovery and the Alertmanager component

Apache-2.0Open sourceFreeSelf-hostedBroken

Uptime Kuma

Louis Lam (open-source project) · Monitoring & observability

Self-hosted uptime monitor with HTTP, TCP, DNS, ping and keyword checks, many notification channels and public status pages

MITOpen sourceFreeSelf-hostedBroken

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