Nextiva is better than RingCentral for conference calls, and it’s our top recommendation for most use cases. Nextiva uses carrier-grade data centers for superior performance, and it’s one of the most reliable conference call solutions on the market. Nextiva is built to scale for organizations of all sizes and even has a free forever plan that includes free conference calls for up to 100 attendees. RingCentral is better than Nextiva for small businesses seeking an all-in-one communication platform with a primary use for VoIP phone services.