ReacherX is an open-source agent that automatically monitors X/Twitter and LinkedIn to find and research potential customers matching your criteria, then helps draft personalized outreach messages. Available for self-hosting under AGPL-3.0 or as a hosted plan that manages API costs and social data access.
MarkAI is an AI-powered platform that monitors public online communities to help startups find prospect conversations discussing their problem, even when customers don't use official product terminology. It analyzes discussions across seven platforms, scores relevance, and sends timely alerts to email or Slack when strong matches appear.