The main difference between Woodpecker and HighLevel is that Woodpecker is primarily focused on email marketing and outreach, while HighLevel offers a broader range of marketing automation tools. Woodpecker offers email campaign management, follow-up sequences, and personalized outreach, while HighLevel offers email marketing, SMS marketing, and a comprehensive CRM system. Additionally, HighLevel includes integrations with third-party apps, such as Zapier and Facebook, and offers features like appointment scheduling and website tracking. Woodpecker, on the other hand, offers features such as A/B testing and analytics reporting, as well as various integrations with other software platforms. Overall, both platforms have their unique strengths, and the choice between them largely depends on the specific needs and preferences of the user.