Cold calling and Lead Generation in any industry.
I have called US clients based in the US selling to them software - data quality monitoring tool software. I did this job on upwork.
Other than this I have done cold calling to sell bank products. I have worked for an international bank for over 14 years.
Tools that I have used for lead generation are: LinkedIn Sales Navigator, Lead IQ, Lusha, Salesforce, Grow Me Organics
For cold calling I have used Outreach.io and Gong