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.
LimeLeads is a searchable database with millions of US-based leads updated every 90 days. You can build, preview, and share as many customized searches of B2B leads as you want (no sign-in required), making it easy to find the right leads anytime.
We've always found that keeping data fresh is a challenge, and there's nothing worse that running outreach to ton of stale contacts! If they really do update the data every 90 days that that's a pretty cool feature.