1. Free To Get Started
The first question on everyone's lips "Is it free?"
Yes, for the low cost of $0 you can get started today using it.
2. Linking Notes
Think referencing but on steroids.
Obsidian allows you to link your notes on a conference talk you just heard to your notes from an article you read months ago through backlinks and unlinked mentions.
Extremely powerful features for connecting ideas.
3. Markdown Format
All your Obsidian notes are markdown files which means you can easily export and open them using any basic text editor.
You can even share the notes with people who don't have Obsidian because the files are markdown.
4. Files Stored Locally
Your Obsidian files are not stored on the cloud but instead locally on your computer.
This means that you can open them and work on them with or without an internet connection and it works very fast.
5. Graphical Overview
Interested to see what your connected thoughts, notes, and ideas look like?
Obsidian allows you to visualize the connections between notes in a graph like this one.
6. Upgradeable Features
Whether you want to sync your notes between your laptop and mobile, get early access to features, or want to publish your notes online via Obsidian Publish you can.
All these features you can upgrade to if you want.
7. End-to-End Encrypted Security
Your Obsidian notes are extremely secure as they are both end-to-end encrypted as well as stored locally on your device.
This means not even the people behind Obsidian have access to your info.
This is as secure as it gets.
@TheStrugglingScientists I would add to this the ability to use hashtags for organizing and searching your ideas. Moreover, there is a tremendous amount of community plugins that let you adapt the system for different purposes (e.g. calendar, templates, daily notes, and functionality to automate certain aspect).
@betschart ofc and thanks for the suggestion !