Question: I'm looking for an online platform that provides access to a vast collection of academic ebooks across various subjects.

If you want an online service to get access to a large library of academic ebooks covering a range of subjects, Perlego is a great option. It has more than a million professional and academic ebooks covering subjects like architecture, art and philosophy. Perlego has tools to help with learning, including a digital library, read-aloud technology, keyword search, note-taking and an AI-based research assistant. It also has study guides written by experts and a mobile app for studying on the go.

Another good option is Searcholic, an AI-powered search engine for eBooks and documents. It offers advanced search technology to locate and access a wide range of digital content, including academic papers and research articles. Searcholic's AI technology offers precise and relevant results to help you find what you need in a large eBook library. The service also protects user privacy and security by encrypting interactions and protecting personal data.

If you need a tool to extract information from academic papers, Elicit is a powerful AI research assistant. It lets you quickly find, summarize and extract data from more than 125 million academic papers. Elicit is particularly useful for empirical subjects like biomedicine and machine learning, and it can be used for tasks like accelerating literature reviews and automating systematic reviews.

If you want something more interactive with scientific documents, SciSpace lets you upload your own PDFs or use more than 200 million research papers. You can highlight passages and ask questions, and it'll generate explanations and summaries of academic papers. The system is designed to ease literature reviews, with features like paraphrasing, generating citations and creating literature reviews.