Software Alternatives, Accelerators & Startups

Rectangle VS i3

Compare Rectangle VS i3 and see what are their differences

Rectangle logo Rectangle

Window management app based on Spectacle, written in Swift.

i3 logo i3

A dynamic tiling window manager designed for X11, inspired by wmii, and written in C.
  • Rectangle Landing page
    Landing page //
    2023-05-20
  • i3 Landing page
    Landing page //
    2021-09-19

Rectangle features and specs

  • Ease of Use
    Rectangle offers an intuitive user interface that makes window management straightforward and user-friendly.
  • Customizable Shortcuts
    Users can easily configure keyboard shortcuts to better suit their workflow, making window management faster and more efficient.
  • Free
    Rectangle is available for free, making it accessible to anyone without the need for a financial investment.
  • Frequent Updates
    The app receives regular updates, introducing new features and ensuring compatibility with the latest macOS versions.
  • Lightweight
    Rectangle is a lightweight application that doesn't consume many system resources, ensuring smooth performance even on older Macs.

Possible disadvantages of Rectangle

  • Limited Advanced Features
    Rectangle lacks some of the more advanced features found in paid window management applications, such as multiple monitor support and more complex window arrangements.
  • MacOS Only
    Rectangle is only available for macOS, so users of other operating systems are unable to take advantage of its features.
  • Occasional Bugs
    Some users report occasional bugs or unpredictable behavior, which might require troubleshooting or waiting for a future update.
  • Learning Curve for Shortcuts
    While customizable shortcuts are a benefit, there is an initial learning curve for users to memorize and effectively use these shortcuts.
  • Basic Aesthetic
    The app's design and aesthetic are quite basic, lacking the polish and visual appeal found in some other similar tools.

i3 features and specs

  • Efficient Window Management
    i3 allows for highly efficient window management using a tree data structure, making it easy to snap windows into grids and manage multiple applications simultaneously.
  • Lightweight
    i3 is deliberately simplistic and lightweight, which allows it to run efficiently on older hardware or systems with limited resources.
  • Customizability
    Users can extensively customize keybindings and behavior through a plain text configuration file. This allows for a personalized workflow.
  • Keyboard-Centric
    i3 is designed to be used primarily through keyboard shortcuts, which can lead to increased productivity for advanced users.
  • Scriptability
    i3 supports various scripting languages through its IPC (Inter-process Communication) interface, enabling automation of complex workflows.
  • Community and Documentation
    i3 has strong community support and extensive documentation, making it easier for new users to learn and troubleshoot issues.

Possible disadvantages of i3

  • Steep Learning Curve
    New users may find i3 difficult to learn and configure, especially if they are accustomed to traditional desktop environments.
  • Lack of GUI Configuration Tools
    i3 relies heavily on manual edits to text files for configuration, lacking user-friendly graphical interfaces for setup and customization.
  • Limited Out-of-the-Box Features
    i3 does not come with many built-in features available in more comprehensive desktop environments, such as app launchers or system tray support, requiring additional setups.
  • Compatibility Issues
    Some applications may not play well with tiling window managers like i3, requiring workarounds or alternative software choices.
  • Minimal Default Appearance
    Without customization, i3 offers a very minimalistic and barebones visual experience, which may not be appealing to all users.

Analysis of Rectangle

Overall verdict

  • Overall, Rectangle is highly regarded for its ease of use, extensive customization options, and the fact that it is free and open-source. It provides essential functionality without unnecessary complexity, making it suitable for both casual users and power users who need efficient window management.

Why this product is good

  • Rectangle is a popular window management tool for macOS, known for its simplicity and ease of use. It allows users to efficiently organize and resize application windows using customizable keyboard shortcuts or by dragging windows into pre-defined areas of the screen. This can enhance productivity by minimizing the time spent arranging windows and improving multitasking capabilities.

Recommended for

    Rectangle is recommended for macOS users looking for a straightforward, lightweight solution to manage application windows. It is particularly beneficial for those who frequently work with multiple applications at once, including developers, designers, and anyone who values a tidy and organized desktop environment.

Analysis of i3

Overall verdict

  • Yes, i3 is considered a very good window manager for users who appreciate its minimalist and efficient approach. Its lightweight design keeps resource usage low, which can improve performance on less powerful machines.

Why this product is good

  • i3wm is known for its simplicity, speed, and efficient use of screen space, making it a popular choice among power users and developers who prefer a keyboard-driven workspace. Its tiling feature allows for the seamless organization of multiple windows, enhancing productivity and multitasking. Furthermore, it is highly customizable, allowing users to tailor their workspace to their specific needs.

Recommended for

    i3wm is recommended for advanced users, developers, and anyone who prefers a keyboard-centric interface. It is ideal for users who like to customize their environment extensively and are comfortable with configuring software via text files. New users with a willingness to learn may also find it rewarding.

Rectangle videos

SKYWALKER RECTANGLE TRAMPOLINE REVIEW!!!

More videos:

  • Review - Skywalker Rectangle Trampoline Review #1
  • Review - Marvin Malton 160 Rectangle Flying Hour Watch Review

i3 videos

30k Miles with the BMW i3 - End of Lease Review

More videos:

  • Review - 2016 BMW i3 - Review and Road Test
  • Review - 2018 BMW i3s Range Extender (REx) Review - The Future Of Cars?
  • Demo - Gaming With Intel's Core i3 9100F - The First Turbo Boosted Desktop i3
  • Review - The best EV for the money? Used BMW i3 Review

Category Popularity

0-100% (relative to Rectangle and i3)
Mac Tools
100 100%
0% 0
Window Manager
74 74%
26% 26
Linux
0 0%
100% 100
Mac
100 100%
0% 0

User comments

Share your experience with using Rectangle and i3. For example, how are they different and which one is better?
Log in or Post with

Reviews

These are some of the external sources and on-site user reviews we've used to compare Rectangle and i3

Rectangle Reviews

Best 6 Mac Window Managers
Rectangle shows that you donโ€™t need to dip into your bank account to get window resizer tools. This free Mac window manager lets you manage multiple windows using keyboard shortcuts, menu options, or by dragging and dropping. Just like Magnet, you can split your screen up into quarters, thirds, or halves.
Source: mackeeper.com
Top 6 Window Manager Apps for Mac
Most window manager apps for Mac support multiple monitors. They can help you move windows between screens and create custom layouts for each monitor. Many window manager apps โ€“ such as BetterSnapTool, Magnet, and Rectangle โ€“ offer this functionality.
The 6 Best Mac Window Management Tools
However, it might take some time for you to get used to the shortcuts in the Rectangle app since there are many. Furthermore, you can also add some of your apps to exceptions if you want to keep them away from Rectangle's shortcuts.

i3 Reviews

Top 13 Best Tiling Window Managers For Linux In 2022
Sway is a tiling Wayland i3-compatible window manager that dynamically arranges app windows to rationally maximise desktop space. It is free, open-source, and lightweight. By default, it arranges windows in a grid and supports practically all of the i3 commands.
Source: www.hubtech.org
Top 10 Best Desktop Environments in 2020
i3-wm is one of my most loved standalone window managers, qualifying it to easily fit under the desktop environment list! The configuration is just very easy, and you can change everything that you see on screen. This includes what information you see on the bottom panel, how windows behave, and keyboard shortcuts to move, align, and set up windows on the screen.
13 Best Tiling Window Managers for Linux
Sway is a free, open-source, and lightweight tiling Wayland i3-compatible window manager that automatically arranges app windows to logically maximize desktop space. It arranges windows into a grid by default and supports almost all the commands included in i3.
Source: www.tecmint.com
5 Great Tiling Window Managers for Linux
I begun testing i3 just this week. I was always fascinated by the Tiling WMโ€™s as they seem really light on system resources and functional. To my surprise , although i3 is really easy to customize, and works really well (at least for my needs) , I found that it isnโ€™t really that lightweight. I had Mate desktop environment use the same amount of RAM. Maybe I was mislead to...

Social recommendations and mentions

Based on our record, Rectangle should be more popular than i3. It has been mentiond 479 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Rectangle mentions (479)

  • Ubuntu 26.04 LTS Released
    As a both old Linux and now decade user of MacOS, after I got used to no middle-click paste and no focus-follows-mouse: 1. Keyboard shortcuts are Emacs, Ctrl-A: start of line, E: end of line, K: kill selected or to end of line, Y to paste, etc. https://support.apple.com/en-au/102650#text 2. Karabiner elements (FOSS) fixes keyboard mappings outside of the Settings: https://karabiner-elements.pqrs.org/ 3. I have the... - Source: Hacker News / 4 months ago
  • Native Instant Space Switching on macOS
    Every macOS user uses Rectangle.app โ€” https://rectangleapp.com The ones who don't use it is because they donโ€™t know it exists. - Source: Hacker News / 4 months ago
  • Native Instant Space Switching on macOS
    I use https://rectangleapp.com/ and enjoy it. I have shortcuts to move windows to the left/right half of the screen, and cycle between monitors. This, combined with native cmd+tab and cmd+` is enough for me. - Source: Hacker News / 4 months ago
  • Make macOS consistently bad (unironically)
    Rectangle [1] is pretty much essential for me because of this. I use only a few keypresses (maximize window, move to one of the halves of the screen horizontally) but that is enough. My mouse very rately interacts with the borders of any window, or those buttons. I had to click on the green one that you mentioned in order to see what it did (yuck). [1] https://rectangleapp.com/. - Source: Hacker News / 5 months ago
  • Make macOS consistently bad (unironically)
    I use Rectangle [1] for window management. I only use three shortcuts: full screen, left half of the screen, and right half of the screen. My editors and chrome are always running in one of these modes. But for other apps like Messages, Notes, Music, etc - yeah I don't usually expand them to full screen. [1] https://rectangleapp.com/. - Source: Hacker News / 5 months ago
View more

i3 mentions (92)

  • Why I traded my custom "Opinionated Linux" for Omarchy
    I've been using Omarchy as my main setup since June 26, 2025, the day DHH released the first version. Before that I had my own custom Opinionated Linux, mclovin-ARCHived: an Arch + i3wm installer set up exactly the way I liked. It was total control over the OS: me deciding what goes in, keeping every piece (i3wm, polybar, picom, kitty, dotfiles) up to date and making sure they all talked to each other for the... - Source: dev.to / 3 months ago
  • Omarcacca
    Then few years back, in 2015, I got shown i3wm and used it on my ubuntu-netinstall until 2020, then I switched to Budgie and my personal laptop has been using that ever since. - Source: dev.to / 7 months ago
  • Automatic Visual Feedback for System Volume Change in I3wm via Dunst
    I switched to the i3 tiling based window manager. Because it's a whole different environment and thinking, it was very different from what I was used to. The volume buttons were working on my keyboard, but I didn't get any visual feedback. Furthermore, the volume percentage could go down below zero and increase up to more than hundread percent. There were times when I was confused why the keys stopped working, but... - Source: dev.to / about 2 years ago
  • "We understand" ;)
    This is partially why I use tools like i3 (/ sway). I like the tool; it works extremely well for me; the design has stayed the same for 20 years; there's no profit motive to come along and fuck everything up. It just works. It is boring in the best way possible. Source: over 2 years ago
  • what machines have you used for development, and what do you prefer?
    I use MacBook Pro (Retina, 15-inch, Mid-2014) with Manjaro as OS using i3 as a window manager. It isn't perfect, but I'm thrilled with it. I have been a Mac OS user for the last 15 years and wouldn't change what I have now for a Mac OS because I don't need more than what I'm using for development. Source: about 3 years ago
View more

What are some alternatives?

When comparing Rectangle and i3, you can also consider the following products

Magnet Window Manager - Magnet Developers

Sway - Sway is a drop-in replacement for the i3 window manager, but for Wayland instead of X11.

yabai - A tiling window manager for macOS based on binary space partitioning

dwm - dwm is a dynamic window manager for X. It manages windows in tiled, monocle and floating layouts. All of the layouts can be applied dynamically, optimising the environment for the application in use and the task performed.

BTT Remote - A remote control for you Mac, using your iPhone or iPad

Openbox - Openbox is a highly configurable, next generation window manager with extensive standards support.