-
pygenda
An agenda application inspired by Agenda programs on Psion PDAs, written in Python/GTK. Targeting Planet Computers' Gemini PDA (running Linux) in particular, but should work on similar devices (after providing a user CSS file to set font sizes etc.).
-
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.
I'm currently writing an agenda app inspired by the Psion 3a/5 Agendas - because they were the best calendar apps I ever used.
Github: https://github.com/semiprime/pygenda
The Beepberry isn't far off: https://beepberry.sqfmi.com/ looks like it's got a Blackberry keyboard. Missing LTE, but since it's just a raspberry pi zero, you could probably hack one in directly to a serial port on the GPIO. Needs a case though, but 3D printing one shouldn't be hard.
But I think the general market for this kind of device is really tiny; phones and tablets can do this pretty well, and appeal to general consumers