Elucify - A completely free software tool that uses crowdsourced data to find business email addresses
Hunter - Find all the email addresses related to a domain
Integrate - Integrate powers customer acquisition by connecting media programs and prospect data with marketing and sales systems.
Albacross - The world's first free B2B Lead Generation Network. Albacross help companies master their B2B digital marketing with Lead Generation and targeted marketing
Lead Forensics - B2B website analytics and lead generation.
Upscribe - Embeddable lead generation forms for Medium