Another good option is ChatDOC, which can handle a range of file types, including PDF, DOC and more. It can provide quick answers to questions, dig deeper with AI analysis, and analyze images with GPT-4 integration. ChatDOC also can have a conversation with multiple documents and can analyze math formulas, so it's good for students, professionals and businesses.
For academic papers, Scholarcy is geared specifically for turning research papers into interactive summary flashcards. It can summarize, analyze, take notes and highlight documents, and can dramatically boost research productivity. It's available in free and paid versions, depending on how much you need to use it.
Last, TLDR This can summarize articles and documents in a single click. It can handle a variety of file formats and URLs, and can also extract article metadata and present it in a distraction-free reading interface. It's free and can be used directly through the website, so it's a good option if you're dealing with a lot of text.