Yes, both Howitzer and ActiveCampaign offer a Free Trial.
Howitzer is designed for Large Enterprises, Medium Business and Small Business.
ActiveCampaign is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Pricing for Howitzer Starts at $59/Month whereas for ActiveCampaign Starts at $29/User/Month.
Some top alternatives to Howitzer includes Outgrow, ActiveCampaign, CleverTap, Moosend, Omnisend, Net-Results, MaaxMarket, SAS Marketing Automation, Odoo Marketing Automation, SimplyCast 360, Remarkety, Adobe Marketo Engage, Zoho Marketing Automation, Social Rise and Ackwire.
Some top alternatives to ActiveCampaign includes Outgrow, CleverTap, Moosend, Omnisend, Hubspot Marketing Hub, Klaviyo, Constant Contact, MailChimp, MailerLite, AnyFunnels, ConvertKit, ClickFunnels, Contactspot and Flodesk.