I run a bootstrapped media / software business and have been for the past four years. Here are the best tools I use after experimenting with hundreds of others.
The product stack discussion always gets a lot of engagement but the ops stack is what actually determines whether a solo founder can scale without burning out.
My current ops layer: Notion as the single source of truth. 6 linked databases that handle what would otherwise require 4-5 different tools:
Total cost: 6/mo for Notion. Replaces a CRM (0+), project manager (0+), and revenue tracker (spreadsheet sprawl).
I'm building this out as a Solopreneur OS to validate whether other solo founders at /bin/bash-5K MRR want it pre-built for them. Gate is May 22 - if it gets traction, I'll release it as a 9 Gumroad template.
What's in your ops stack vs. product stack? The gap between the two is usually where solopreneurs lose time.