Our great sponsors
-
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.
It looks like Telehack is running a Javascript + CSS kit called ShellInABox to allow web browsers to connect via Telnet. The link they provided in the "about" leads to a malfunctioning webpage, looks to be last updated in 2010. However, that project was forked on GitHub, and the most recent update appears to be Jan 2019, so there is a likely-working copy of that software for allowing for that kind of access.
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.