Marketing

Mailchimp is an email marketing platform for creating campaigns, automating sequences, and analyzing performance. Perfect for solo founders.

ResonanceMetrics is the only platform that combines technical audits and AI tracking to maximize your visibility on ChatGPT, Claude, Gemini, and Perplexity. As a solo founder, you can benefit from an in-depth analysis of your site in under 60 seconds, automatically generate customer personas, and track your visibility across multiple LLMs. With a unified score, you can prioritize the necessary actions to enhance your online presence. The platform is operational in less than 5 minutes, allowing you to quickly access valuable insights for your GEO strategy.

Open-source publishing with memberships

Minimalist newsletter tool for writers

Affordable email built by indie hackers

Advanced email automation with CRM

Self-hosted newsletter using Amazon SES

Email marketing for creators with automation

Newsletter platform with growth tools and ad network

Newsletter platform with paid subscriptions

Affordable email marketing with generous free tier

Email platform specifically for SaaS (YC-backed)

Developer-focused email API

Scalable email API for high volume

Open-source newsletter manager

Beautiful email marketing with flat-rate pricing

Behavioral messaging for web and mobile apps