No. You can download as many leads as you want. There are no daily or monthly limits to the amount of leads you can scrape.
Lead Scrape saves the results in CSV and Excel format. You can then import the exported file into any database you want.
Yes, most CRM systems and marketing products support CSV, so you will be able to import the extracted data into your CRM marketing software, Excel or into any database.
No, the software is a desktop app available for Windows and Mac OS.
No. Lead Scrape comes with his own set of proxies (updated every five minutes).