Choosing an Outliner

Outliners share similar core operations, but each has its own design philosophy and strengths. The right choice depends on how you work.

Here's an overview of the major outliners available today (as of April 2026). See also: What Is an Outliner?

What to Look For

A few architectural differences matter when choosing an outliner.

Web app or native app. Web-based outliners like WorkFlowy run in a browser and work on any platform. Native outliners like Bike and Kosshi use the OS rendering engine directly, which makes a noticeable difference in responsiveness. Since an outliner is something you use every day, how it feels to operate matters.

Where your data lives. WorkFlowy stores data on their servers. Bike stores it as local files. Kosshi stores it in a local database and syncs between devices via iCloud (CloudKit). Where your data lives affects offline access and privacy.

One outline or multiple documents. WorkFlowy and Kosshi are designed around putting everything into a single outline. You zoom in to see the part you need, navigating within one structure. Bike and OmniOutliner work with multiple files or documents. If you prefer to separate things by project or topic, that approach may suit you better.

WorkFlowy

WorkFlowy is built around the idea of putting everything into a single, infinite outline. Zoom in, filter by tags, keep the interface simple.

It runs as a web app, so it works on any platform with a browser. It supports images and offline editing.

A good fit if you:

• Need to work on Windows, Android, or Linux
• Want to share outlines with a team

Bike

Bike is a native macOS outliner. It is notably responsive. It focuses purely on text editing with no extra features — that restraint is the point.

It works with local files (.bike), which makes it easy to manage documents and integrate with other tools. If you want a fast, focused outliner on macOS, Bike is worth considering.

A good fit if you:

• Work on macOS and focus on text
• Prefer file-based document management
• Prioritize speed above all else

OmniOutliner

OmniOutliner is a feature-rich native outliner by the Omni Group. It supports columns, styles, templates, and runs on both macOS and iOS.

You can add multiple columns to an outline to track status, dates, numbers, and other attributes. This spreadsheet-like capability is unique to OmniOutliner.

A good fit if you:

• Need columns to manage multiple attributes
• Want customizable styles and templates
• Are organizing structured data rather than free-form text

Kosshi

Kosshi is a native outliner for macOS and iOS. It is built for responsive editing, with image support and iCloud sync.

You can place screenshots, diagrams, and photos inside your outline alongside text.

Data is stored locally on your device and syncs automatically between Mac and iPhone via iCloud (CloudKit). It works offline. One-time purchase, no subscription.

A good fit if you:

• Want to use the same outliner on Mac and iPhone
• Need images alongside text in your outlines
• Prefer native app performance
• Want to keep your data on your own devices and iCloud account
• Want to avoid subscriptions

Comparison

Every outliner listed here has its own strengths. If possible, try a few and see which one fits the way you work.