CRMs

Twenty - new open source option

https://twenty.com/ - https://github.com/twentyhq/twenty

Started in 2023. YC backed. Seems pretty solid.

💰 $9/mo/user ⭐ 27k (2025-03-22)

Pipedrive

https://www.pipedrive.com/

💰 $14 / month / seat

Attio

https://attio.com/ - modern, AI driven, let's automate everything.

💰 $0 / month for up to 3 seats and minimal plan 💰$29 / month / seat

Hubspot

very well known.

Just use a spreadsheet

A very good basic approach. Start here if you aren't sure yet!