Question: Is there a personal knowledge base tool that allows me to save and categorize information, and also provides offline access?

If you want a personal knowledge base tool that lets you store and organize information and that works offline, Recall is a top contender. Recall uses AI to summarize and organize information from sources like YouTube videos, blog posts and PDFs. It works offline, has security and encryption and protects your data. It also has browser extensions for Chrome and Firefox and mobile apps for iPhone and Android. The service costs nothing or $7 per month with its Plus Plan.

Another option is Keepi, which records and organizes your thoughts and insights so you can easily retrieve shared information like websites, documents, photos, videos and text messages. Keepi uses AI to categorize and make content searchable. It also can have audio interactions with WhatsApp and can generate images from text prompts. It's good for people who want a full-featured personal knowledge management system with a lot of bells and whistles.

Knowbase is a knowledge management tool that combines file storage with AI-powered chat. You can store and retrieve files, including videos and audio recordings, by asking conversational questions. Knowbase can handle many file formats, and you can transcribe video and audio recordings, which can be useful for organizing and sharing information. The free plan comes with 100 MB of storage and 25 queries per month, but paid plans are available for more storage and query limits.

For people who prefer a more visual interface, mymind offers AI-powered, private information management with no folders or tags. It's got smart bookmarking, distraction-free content capture and AI-powered image recognition. mymind is geared for people who benefit from visual prompts and who want privacy, with no tracking or social sharing. It's available as browser extensions and mobile apps, and has two pricing plans for different needs.