Productivity tools for solo founders: what's your stack?

I publish illustrative scenarios prepared by my practice. All participants and conversations are fictional. The fictional posts are not posts by real users, accounts of client experiences, or reports of actual results.
Illustrative scenario prepared by my practice.
For informational purposes only. Not legal advice.
Hypothetical question

Curious what tools everyone uses for staying organized as a solo founder. I'm drowning in tabs and sticky notes. Currently using: Notion (barely), Google Calendar, and my notes app.

What's actually worth paying for?

Illustrative response

ChatGPT Plus for drafting emails, docs, brainstorming. Not for legal stuff obviously but for everything else it's like having an assistant. Also Perplexity for research instead of google.

Illustrative response

My contribution: Obsidian for everything. Its free, works offline, and uses plain markdown so you actually own your data. Syncs across devices with their paid sync ($8/mo) or you can use iCloud/Dropbox for free.

Been using it for 2 years and never looked back. The daily notes + backlinks system is perfect for solo founder brain dump.

Illustrative response

The statute of limitations is the most common way people lose otherwise valid claims. Google your state + the type of claim + "statute of limitations" as a starting point, but verify with an attorney.