Editorial policy

• Descriptions are written in our own words; prices, limits and feature quotes come from the vendor's site and link to it.
• Each listing shows the date we last checked it. Prices change often in this category, so we re-check listings regularly and update the date.
• We don't accept payment for inclusion or position. A tool that pays us an affiliate commission is ranked by the same rules as one that doesn't.
• Corrections: send the vendor page that shows the right fact via Correct a listing; we fix verified errors and note the new check date.