ToText

MyMind is an idea note, quote, page, and image collector with the usual tag-style support. You add material from the web via a capable browser plugin; but, the standout feature is AI help in your search/retrieval of information, even without tags. It displays your saved material in a card grid—think Pinterest, Pocket, and similar—with selectable density and size. A large search box sits at the top with instant results while you type.

Coherence is an AI reading workspace for research articles and PDFs. Ask contextual questions about selected passages, annotate sources, and organise saved sources and notes in a smart knowledgebase. It supports PDF parsing and Markdown workflows, with web, Chrome and macOS access and a free plan.

LaTeX Autofill is a free, MIT-licensed, offline plugin for Obsidian. Type what you mean inside $...$ (in English or Chinese, e.g. 'integral', 'matrix') and pick a full LaTeX template instead of remembering commands. It is listed in the Obsidian community directory and makes no network or AI calls.