Databases seem to be a favourite topic on here. Whenever a discussion arises people always put forward their favourites.
With this in mind I recently created a spreadsheet to compare every free and open source time series database I could find.
https://docs.google.com/spreadsheets/d/1sMQe9oOKhMhIVw9WmuCEWdPtAoccJ4a-IuZv4fXDHxM/edit#gid=0
Here's a link to the blog that discusses the results:
https://blog.dataloop.io/top11-open-source-time-series-databases
Looking for feedback from anyone interested in this topic.