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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
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Gitea
Git with a cup of tea! Painless self-hosted all-in-one software development service, including Git hosting, code review, team collaboration, package registry and CI/CD
Miryoku.
I don't have any personal experience with anything except Colemak-DH so I can't offer recommendations based on personal experience. With that being said, if I was to try a new layout I'd likely choose APTv3 or some variation of Hands Down as I hear good things about both.
Since everything can be stored locally, I would prob. consider a backup into a private Git repo, prob. my personal Gitea instance. (Gitlab is a lot more heavy/industrial strength and thus has a higher attack surface.)