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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.
You can use custom URLs if you want to integrate it at a company or domain name level. There are plenty of free add-ons that "work well enough" e.g., https://github.com/seansylee/kanban-board-bot or google-fu your way to the many paid options.
Gitlab Community Edition: https://gitlab.com/rluna-gitlab/gitlab-ce for code repository version control and source code management.
NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a more popular project.