Online resources I believe to be useful, well if only to myself...

Software Dev related

ResourceURL
Hexadecimal conversion tableshttp://www.hexadecimaldictionary.com/
Unicode Character tablehttps://unicode-table.com/en/
Regex WYSIWYG tool, great for testinghttps://regex101.com/
Punycode conversion toolhttps://www.punycoder.com/

Infrastructure:

ResourceURL
Mail, DNS and other test and validation tools.https://mxtoolbox.com/


Google Tools:

ResourceURL
Google Webmaster Tools, Search etc.https://www.google.com/webmasters/tools
Google Analyticshttps://analytics.google.com/

Microsoft Tools:

ResourceURL
I us the catalog to find drivershttps://www.catalog.update.microsoft.com/Home.aspx
Create a Win10 Recovery drivehttps://support.microsoft.com/en-nz/help/4026852/windows-create-a-recovery-drive

Hardware Related:

ResourceURL
HP Drivershttps://support.hp.com/nz-en/drivers




Electronics:

ResourceURL
i2c bushttps://www.i2c-bus.org/
Partical - IoT Deviceshttps://www.particle.io

Monitoring tools:

ResourceURL
Glances (altnative to top / htop)https://glances.readthedocs.io/