If you're looking for a Google Sheets extension to help you with sales prospecting, Cohesive AI is a good candidate. The extension uses web research and AI to perform data enrichment and web scraping right in Google Sheets. It can find or validate contact email addresses, and it can build high-quality, verified contact lists with the help of ZeroBounce. And it's free, with a Slack channel for help.
Another good option is PromptLoop, which uses Google Sheets as an interface to build and enrich data sets with web scraping and data classification. The service can be used for market research and sales prospecting, among other uses. It's got features like accurate data extraction, flexible formatting and instant intelligence to help you wrangle and analyze big data. PromptLoop offers a free plan and two paid tiers, so you can use it at different levels of intensity.
If you need something more general-purpose for web scraping, check out Simplescraper. The tool lets you scrape data from websites without programming, with features like structured data extraction, automated cloud scraping and Google Sheets export. It can handle lots of websites, and it's got a variety of pricing tiers including a free option, so it's good for developers and noncoders.
Last, Hexomatic offers web scraping and workflow automation without programming. With a 1-click web scraper and more than 100 pre-built automations, Hexomatic can help you find contact information and validate email addresses. It can integrate with tools like Google Sheets and Zapier so you can synchronize workflows and automate repetitive tasks, which is handy for sales prospecting.