Whois / DNS lookups

Name server lookup – dnschecker.org
DNS record lookup – nslookup.io
MX + DNS lookup – mxtoolbox.com

Domain names

domain name lookup – xxxxxxxxx

Vendor / service status

NBN Co known outages – nbnco.com.au
Google Workspace status – google.com
Microsoft 365 status – cloud.microsoft

Convenient downloads

Adobe acrobat reader – adobe.com
PDF Gear – pdfgear.com
7zip – 7zip.org
Outlook classic – microsoft.com

Device downloads

DisplayLink – synaptics.com

Convenient links

Chat GPT – chatgpt.com
Claude AI – claude.ai
OO Software – oosoftware.com