Free and flexible CRM for lean teams

I need a CRM with adjustable workflows that is free or very low-cost for a small team on a tight budget. What do you recommend?

We are a small team with limited funds and need a CRM that lets us customize our workflows without breaking the bank. Any suggestions?

My small team needs a CRM that won't break the bank but still lets us customize our sales workflows. Any suggestions for budget-friendly options?