Kiwi for Gmail takes Google's apps out of the browser on Mac and Windows, with several Google accounts signed in at once. It's built only for Google Workspace, and it adds its own filtered views on top of your inbox.
Singlebox runs Gmail, Google Calendar, and Drive exactly as Google builds them, next to Slack, Notion, and any other web app you use.
At a glance
| Singlebox | Kiwi for Gmail | |
|---|---|---|
| What it is | A dedicated desktop app for your messaging, email, and work apps | A desktop app for Gmail and Google Workspace |
| Platforms | macOS, Windows | macOS, Windows |
| Your email provider's own web app, with all its features | Gmail, with filtered inbox views by date, importance, unread, attachments, or stars | |
| Multiple accounts | Every app or account is its own profile with an isolated session | Up to 9 Gmail or Google Workspace accounts |
| Adding apps | Pick from 65,000+ apps in the catalog or add any website | Gmail, Calendar, Docs, Sheets, Slides, Drive, and Chat |
| Organizing apps | One profile bar with folders, tabs and tab groups inside each app, and a command palette | Tabbed workspaces for your Google apps |
What is Singlebox?
Singlebox is a dedicated desktop app for your messaging, email, and work apps. Every app or account is its own profile with an isolated session, so each Google account stays signed in next to the rest of your tools. Links open in your default browser, or follow rules that send them to a specific profile.
What is Kiwi for Gmail?
Kiwi for Gmail is a desktop app for Gmail and Google Workspace on Mac and Windows. It covers Gmail, Calendar, Docs, Sheets, Slides, Drive, and Chat in tabbed workspaces, with filtered inbox views and up to nine accounts. This comparison is based on Kiwi for Gmail for Mac and Windows.
1. Google and everything else
Kiwi's world is Google. That covers a lot, but most teams also run on Slack, Notion, Asana, or a CRM that still lives in a browser tab.
Singlebox puts Google's apps next to all of them. Pick from 65,000+ apps in the catalog or add any website, and switch between them with a click or a keyboard shortcut.
2. Google's apps as Google builds them
Kiwi adds its own views on top of Gmail. Singlebox runs each service's own web app, so every new Gmail or Calendar feature, label, and shortcut is there the day Google ships it.
3. Every Google account, side by side
Both apps keep several Google accounts signed in. In Singlebox, every account is its own profile, side by side in the profile bar with its own unread badge. Mute any profile that can wait, and link rules send each link to the right account.
4. More inside each app
Every app has tabs and tab groups, so you can keep a thread open next to your inbox. A downloads manager handles attachments, a command palette jumps to any app, and the 1Password, Bitwarden, and LastPass extensions are built in.
Moving from Kiwi for Gmail
- Download Singlebox on your Mac or PC.
- Add Gmail, Google Calendar, Drive, and any other Google apps from the catalog, plus the other tools you use.
- Add a profile for each Google account. Your mail, labels, and filters live in Gmail itself, so there's nothing to export.
Which one should you choose?
Kiwi for Gmail is still a good fit if you:
- Work entirely in Google Workspace and want filtered inbox views layered on top of Gmail
- Want Docs, Sheets, and Slides tracked as recent documents across your Google accounts
Singlebox is the better fit if you:
- Also work in Slack, Notion, or other web apps
- Want Gmail and Calendar exactly as Google ships them
- Want every account visible side by side, with its own unread badge
- Want tabs, link rules, and password managers inside each app
Keep Google's apps and the rest of your workday in one window: try Singlebox for free.
