If you're looking for a Revoicer alternative, Narration Box is a great option. It has more than 700 AI narrators in 140+ languages and accents, with more advanced options like context awareness, emotive styles and fine-grained control over voice inflection. The service also has a web interface and flexible pricing options, including a free tier.
Another top contender is PlayHT, which has a large library of more than 600 ultra-realistic AI voices. It supports multiple languages and accents, and has options for custom pronunciations, voice inflection and real-time voice cloning. PlayHT is good for video voiceovers and conversational AI.
If you're looking for something more general purpose, consider LOVO. LOVO has 500+ voices in 100 languages and offers options like AI script writing, voice cloning and audio and video editing. It's geared for businesses, content creators and educators who want to create high-quality voiceovers and videos without a lot of fuss.
Last, WellSaid Labs is worth a look. It's got a library of AI voices with different tones and accents, and it's geared for a broad range of digital experiences like commercials, videos and eLearning materials. It's got a few different pricing tiers, including a free trial, so it should be accessible to different customers with different needs and budgets.