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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.
https://rustdesk.com/ works extremely well for what it is.
Another option - https://www.kasmweb.com/ - you can host multiple versions of Linux (Centos, Ubuntu and a variety of others are ready out the box), it provides direct access to the desktop via a web browser and the screen performance is pretty much identical to native desktop/keyboard access. It's runs a session, pretty much like setting up a VM for each of them.
If you need something fast, Sunshine (GPLv3, one screen, no login manager) and HP's ZCentral (paid, but more functionality) work OK. Both are fairly bandwidth heavy, especially Sunshine which is based on NVIDIA's GameStream protocol. TL:DR, these quickly inflate data usage if you're over cellular.