-
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.
-
mRemoteNG
mRemoteNG is the next generation of mRemote, open source, tabbed, multi-protocol, remote connections manager.
Heimdall
https://github.com/mRemoteNG/mRemoteNG Looks like it is getting some updates based on the dates on github, though the latest release is from 2019, so I do get your meaning. Though https://github.com/mRemoteNG/mRemoteNG/projects shows that 1.78 has a few updates in the works (putty changed to ssh.net for example). Not sure how good or bad that is.
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.