If you're looking for a FreeTTS replacement, Speech Studio is a powerful platform for speech-to-text and text-to-speech. It's good for things like customer service chatbots and voice assistants, where you need to process speech in real time.
Another top contender is ElevenLabs, which offers high-quality realistic voices in 29 languages and more than 120 voices. It's good for a variety of uses, including content creation, games, audiobooks and chatbots. ElevenLabs offers a free plan with 10,000 characters per month and several paid plans for different users.