What do you think are the must-have tools for a startup's sales stack?

Here are some tools that we're currently experimenting with when taking our startup to market: Hubspot - CRM Apollo.io - Sequences Loom - Personal demos Segment + Customer.io - Analytics and marketing OpenAI - ChatGPT Surfe - LinkedIn to Hubspot sync We're also trying out Clay for prospecting which I personally found very cool What are your must-haves?