user: Question: Name the Latest stable release that has a Price in USD of Free / Negotiable?
Columns: ['Name', 'Company', 'Tracking Method', 'Latest stable release', 'Price in USD']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Analyzer', 'AT Internet', 'Cookies via JavaScript', 'N/A', 'Negotiable']
SQL:

assistant: SELECT "Latest stable release" FROM "Table" WHERE "Price in USD" = 'Free / Negotiable';