Fonts served by XRlytics from this folder

IBM Plex Sans
Copyright (c) 2017 IBM Corp. with Reserved Font Name "Plex".
https://github.com/IBM/plex

B612 Mono
Copyright 2012 The B612 Project Authors (https://github.com/polarsys/b612).

Both are licensed under the SIL Open Font License, Version 1.1:
https://openfontlicense.org/open-font-license-official-text/

The files are Google Fonts' latin subsets, unmodified (fonts.json lists each file's source).