The Gallery

Curator notes on stacks worth shipping, each one picked, tested and documented.

70 posts

SaaS stacks

SigNoz vs Grafana vs OpenObserve: what you actually run (2026)

Three self-hosted observability backends that all claim to be open source. We read the licence files, opened the enterprise directories and measured every container image on September 8, 2026, and the licence, the visibility and the footprint each land in the opposite place to the reputation.

13 min read68
SaaS stacks

Keycloak vs Authentik vs Zitadel: Where Free Ends (2026)

Three self-hosted identity providers that all call themselves open source. The licence boundary sits in a different place in each one, and where it sits decides which you can actually use. Measured from the licence files, the container registries and the shipped config defaults.

10 min read86
SaaS stacks

Valkey vs Dragonfly vs Redis: self-hosted cache for Next.js in 2026

Eight of the nine results for this question are written by a company selling one of the answers, and the licensing argument they all lead with barely applies to you. We read the license files, the security advisories and the release branches instead. The real difference is what happens when a CVE lands.

13 min read142