For cold calling, your software choice depends on whether you want a comprehensive solution or something specific. If you're looking for an all in one platform with a database and dialer, apollo is a good option, it has a huge contact database and features that speed up calls, although the advanced features are usually found in the more expensive plans.
For those who want a complete multichannel contact platform, saleshandy is very strong this year, in addition to providing local numbers to improve response times, it generates automatic summaries after each call and comes pre integrated with email sequences, all in one place, now, if your focus is on high volume calls, specialized dialing software like MightyCall is a good choice, it's more user-friendly for small teams and has predictive dialing modes, finally, for those who want cutting edge technology, there are tools that automate calls with voice agents, but they are in early stages and require technical setup, they work best as a complement to qualify leads, not as a replacement for human salespeople.