-
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.
I've been using Joplin, but just for notes. It does have a Tasks or To-Do list function, but I haven't used it. There are a bunch of plugins available for Joplin, including an Agenda Calendar, Calendar, Event Calendar, and Life Calendar. So anyway there are some options LOL.
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.