-
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.
Obsidian is closed source so you won't be infringing their copyright by incorrectly getting/copying their code within your code. I don't believe they have any software patents (too small a company), and the canvas data format is available under MIT license (https://github.com/obsidianmd/obsidian-api/blob/master/canvas.d.ts). Even if you decided to reproduce their plugin APIs (so that existing Obsidian plugins could be reused with your software), you'd be fine per https://en.wikipedia.org/wiki/Google_LLC_v._Oracle_America,_Inc. (but their API definition is under MIT license anyway: https://github.com/obsidianmd/obsidian-api/tree/master)