MarginNote

RemNote

RemNote combines note-taking, flashcard creation, PDF annotation, and AI-powered study tools into one app built around helping students retain what they learn, not just record it. Notes can be automatically or manually converted into flashcards, which are then reviewed using a spaced repetition algorithm that schedules reviews at optimal intervals for memory retention. Beyond flashcards, RemNote supports PDF and PowerPoint annotation, typed and handwritten notes, an AI tutor chat, and databases for organizing course material, positioning itself as a replacement for juggling separate tools like Quizlet, Anki, Notion, and Evernote.

ConceptMap

A quiet tool for thinking that transforms PDFs, lecture notes, and ChatGPT conversations into dense, teachable mindmaps. Includes a Present mode to walk through nodes linearly.

Roam Research

Roam Research is a web‑based note‑taking platform built around bi‑directional links and a graph view, allowing users to create a web of interconnected ideas. Its daily notes page encourages a habit of capturing thoughts as they happen, while the query language lets you retrieve information across the entire knowledge base. Designed for researchers, writers, and knowledge workers, Roam supports markdown, collaborative editing, and real‑time syncing across devices. The platform’s open API enables custom integrations and automation, extending its capabilities beyond personal use.