8×8 is a comprehensive virtual phone system that comes with all the bells and whistles. Besides offering extensive phone management tools, 8×8 also features built-in team messaging and web conferencing. Plus, you can count on a free number (local, toll-free, or international) and unlimited calling for over 40 countries. Although there isn’t a free plan to take advantage of, the Express subscription offers the first 30 days for free. Additionally, you can enjoy up to 25% off the X-series by opting for an annual subscription.