Cognism brands itself as a "global sales intelligence platform". They offer fully compliant, intelligent, actionable data to source more prospects, create high-performing campaigns, and close more deals.
They have a cool tool to identify intents, by tracking the online behavior of ICP-fit accounts and identifying significant spikes in interest in your product or solution.
Adapt is a B2B contact and company database provider across multiple industries. Adapt has 100 million business contacts, including industry-specific company database and contact information such as job title, direct dial, and email addresses.
It's affordable and they seem to be able to find a wide range of contact details. They have a nice Chrome extension which works well.