When comparing RemNote vs Org-mode, the Slant community recommends Org-mode for most people. In the question“What is the best cross-platform note-taking app?” Org-mode is ranked 1st while RemNote is ranked 61st. The most important reason people chose Org-mode is:
Org-mode is characterized by a flexible and versatile system with adaptability to different workflows, making it comparable as an Evernote alternative. It is at once simple and complex., which helps it to compete as an Evernote alternative.
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Pros
Pro Easily create flashcards and practice with spaced repetition
Pro Free version has most features
Pro Perpetual license available, with a offline-first promise
Pro Has a single pricing plan instead of tiers
Pro Offer mobile and web version, make study on the go possible
Pro Offline-first implementation on mobile and desktop
Pro Each Rem can be focused, zoomed, and made into document easily
Pro Outline structure allows speedy thinking
Pro Very flexible
Org-mode is characterized by a flexible and versatile system with adaptability to different workflows, making it comparable as an Evernote alternative. It is at once simple and complex., which helps it to compete as an Evernote alternative.
Pro Built-in agenda
Org-mode has some built-in agenda functionality. You can schedule tasks and assign various degrees of importance to each of them. Org-mode agenda can also be synced with Google Calendar.
Pro Versioning can be tracked and synced using Git or other VCS
Org files are plain text, and lend themselves well to version control. Emacs also has good integrations for various VCS.
Pro Great sync support
Notes and to-dos can be synced with Trello, Toodledo, Simplenote, Orgmobile, or with tools like Git on Github, Dropbox, Google Drive, and Bitbucket, while WebDAV (with iOS and Android) can also be exported to PDF, mind map, LaTeX, HTML, Docbook, or txt.
Pro Basic spreadsheet functionality
Org-mode has some basic spreadsheet functionality. Other than auto-formatting ASCII tables (a notoriously annoying problem), it also has support for LISP-like syntax to define equations or any other functionality that can be achieved through spreadsheets.
Pro Out-of-the-box Latex support
Org-mode has out-of-the-box support for Latex: it can immediately parse equations (or other Latex markup) and can even compile notes to PDF or HTML.
Cons
Con Locked in the system with rather lackluster export feature
Even though data can be stored locally, they are encrypted proprietary format and can be really messy to export.
Con Nice features like graph view and image occlusion are limited in quota and only available behind paywall
Image occlusion, portal, PDF, etc. functions have a quota for free plan user, and are fully available only after subscribing.
Con Animation can be a tiny bit unsmooth and laggy
Con Limited amount of plugins
Con Pricing is rather high
Con Difficult to learn
Org-mode has a difficult learning curve since you have to learn all the keybindings and commands. It's especially difficult if you are not used to Emacs.