The best alternatives to CloudSponge are FullContact, Haystack, and Malist. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of CloudSponge?
AssemblyAI— Speech-to-Text API with superhuman accuracy
FullContact is a privacy-safe Identity Resolution company building trust between people and brands. We provide the data + intelligence you need in your platforms to accurately identify people and optimize experiences—while putting privacy and security first.
Malist – simple browser extension that takes your email book to a browser. Whenever you need somebody's email, simply click the button in the toolbar and get the email. No more need to ask for an email over and over again or to search in the contact book.
Built with small and growing teams in mind Capture is the only app your team will need for managing both contacts and sales leads. Capture includes smart introductions so ever time you add a contact or lead Capture will send them your contact details, removing the need for business cars.