Constant Contact

Marketing · by Constant Contact · constantcontact.com

Constant Contact alternatives

• Buffer
• beehiiv
• Sprout Social
• Customer.io
• Hootsuite
• MailerLite
• Mailchimp
• Klaviyo
• ActiveCampaign
• Later

Open-source alternatives to Constant Contact

• phpList/phplist3 ★ 881 · AGPL-3.0
  Fully functional Open Source email marketing manager for creating, sending, integrating, and analysing email campaigns and newsletters.
• knadh/listmonk ★ 24,150 · AGPL-3.0
  High performance, self-hosted, newsletter and mailing list manager with a modern dashboard. Single binary app.
• coreyhaines31/marketingskills ★ 58,550 · MIT
  Marketing skills for Claude Code and AI agents. CRO, copywriting, SEO, analytics, and growth engineering.
• AgriciDaniel/claude-seo ★ 26,706 · MIT
  Universal SEO skill for Claude Code. 26 sub-skills + 19 sub-agents covering technical SEO, E-E-A-T, schema, GEO/AEO, agent readiness (Lighthouse Agentic Browsin
• Billionmail/BillionMail ★ 16,190 · AGPL-3.0
  BillionMail gives you open-source MailServer, NewsLetter, Email Marketing — fully self-hosted, dev-friendly, and free from monthly fees. Join the discord: http
• AgriciDaniel/claude-ads ★ 10,750 · MIT
  Claude-first paid-media operations skill for Claude Code across 12 ad platforms (Google, Meta, YouTube, LinkedIn, TikTok, Microsoft, Apple, Amazon, Reddit, Pint

Projects tagged with Marketing topics on GitHub, ranked by stars. A lead, not an endorsement.