Obsidian
Description: Obsidian, a powerful note-taking and knowledge management tool. Forge connections between ideas, create a personal knowledge base, and enhance productivity with this markdown-based, local-first application.
Type: software
Pricing: free
Wolfram Alpha
Description: Wolfram Alpha is a computational knowledge engine that allows users to get instant expert-level answers to questions on math, science, and many other topics by typing queries in plain language. It understands and computes answers across many domains.
Type: software