If you're looking for a Slate alternative, Auri is a good place to start. It's a suite of tools that includes a multilingual AI keyboard for writing, translation, paraphrasing and grammar checking in more than 80 languages. Auri also includes a voice dictation tool, AI Chat for suggesting ideas and setting reminders, and Smart Notes for recording and transcribing your thoughts. It's private, gathering only limited account information, and works on multiple Apple devices. A free version and a Pro subscription costing $9.99 per month are available.
Another option is AI Anywhere, an all-purpose AI copilot that can help you work more efficiently in many apps, documents, emails and websites. It can read, write and code without you having to copy and paste. Quick Actions let you translate text and summarize documents, and a Personalized Copilot lets you customize shortcuts and prompts. AI Anywhere Pro adds AI chatbot abilities and GPT-4 access for $9.9/month.
If you're looking for a tool geared specifically for writing and communication, Typly is worth a look. It uses large language models to suggest responses, improve email communications and perform complex text processing. Typly can integrate with your email inbox and offers a customizable keyboard, so it can be used for personal and professional purposes.
Last is Sider, which offers a range of productivity tools that can be integrated with web browsers and mobile devices to offer chat, writing, reading, translation and image editing tools. Group AI chat and AI article generation abilities are designed to let you save time and be more productive. It offers a free version and a Pro subscription at $20/month, available as extensions for Chrome, Edge and Safari, as well as mobile apps for iOS and Android.