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Insights, tutorials and best practices from the world of Cloud, DevOps and Open Source
Zabbix, Checkmk, Prometheus or Netdata: monitoring compared 2026
Monitoring comparisons usually list features side by side and arrive at the conclusion that all candidates do essentially the same thing. That misleads, because the...
#Zabbix#Checkmk#PrometheusRead more
Mailcow, Stalwart or Mailu: self-hosted mail servers compared
The self-hosted mail server is the emblem of sovereign IT and at the same time the service where self-hosting most often goes wrong. Not because...
#Stalwart#Mailu#MailServerRead more
Documenso or DocuSeal: electronic signing on your own infrastructure
Electronic signing is one of the areas where moving from a cloud provider to your own solution is particularly obvious: it concerns contracts, precisely the...
#DocuSeal#eSignature#eIDASRead more
OpenBao or HashiCorp Vault: secrets management after the licence change
HashiCorp Vault has been the default answer to central management of credentials and certificates for years. Since the 2023 licence change, OpenBao sits alongside it,...
#Vault#Secrets#BSLRead more
Open-source licence changes: the chronicle and what operators must do
Since 2018 a series of well-known open-source projects have changed licence, mostly away from a recognised open-source licence toward a model with restrictions. Two have...
#Licensing#BSL#SSPLRead more
AI labelling obligations since August 2026: what Article 50 actually requires
Article 50 of the AI Act has applied since 2 August 2026. Coverage of it reduces to a single sentence: companies must label their chatbots...
#AILabelling#Compliance#ChatbotRead more
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