Vendors of sales engagement platforms include:

(*) = recommended)

• (*) Apollo.io (includes embedded contact data; very popular in SMB)
• Clari Groove
• Conquer
• Dripify (LinkedIn automation)
• Endgame (product-led sales)
• Gong Engage
• Groundswell (product-led sales)
• Hubspot Sequences
• Kronologic (prospecting via calendar invites)
• Lemlist
• OneShot
• Outplay
• (*) Outreach (top 2)
• Pocus (product-led sales)
• Reply.io
• Salesflow (LinkedIn automation)
• (*) Salesloft¹ (top 2)
• Smartlead.ai (mainly email; no dialer)
• Skylead (LinkedIn automation)
• Toplyne (product-led sales)
• Valley (fully automated email-based)
• Warmly (1st party intent; integrates with other platforms)
• WooSender (pure automated AI)
• ZoomInfo Engage

Footnotes

¹ Disclosure: Jeremey Donovan, the author/editor of this page, is a former Salesloft employee. He and his employer (Insight Partners) both hold equity in Salesloft.