If you're looking for a CelebrateAlly alternative, one of the most notable options is Verble. Verble is an AI speechwriting assistant that can help you draft speeches for different occasions, including wedding speeches. The service works by asking you questions through a chat interface, then producing a draft that's clear and well-structured. It also has smart editing modes and a Practise Center for practicing the speech. It's geared more toward speechwriting, but it's a powerful tool if you have to write speeches a lot.
Another intriguing project is Blush, an AI-powered dating simulator. It's geared toward improving relationship skills and boosting confidence in the dating world, but it's a safe space to try out communication, experiment with relationship boundaries and explore desires. If you want to improve your dating life or plan out relationships with more personal and engaging tools, it could be worth a look.
Last, check out Arrange, an AI-powered planning tool that generates personalized plans for things like trips, workouts and meal planning. It then adds those plans to your calendar so your daily life is easier and more fun to organize. It's not geared specifically for celebratory events, but its general-purpose planning abilities could be useful for planning special dates or events.