Sidekick was a Chromium-based work browser with a sidebar of web apps next to your tabs. It was discontinued on August 3, 2025.
Singlebox keeps the part many people loved, your work apps one click away, in a dedicated window with every account signed in, while your regular browser stays for browsing.
At a glance
| Singlebox | Sidekick Browser | |
|---|---|---|
| Status | Updated regularly, with automatic updates | Discontinued on August 3, 2025 |
| What it is | A dedicated desktop app for your messaging, email, and work apps | A Chromium-based work browser |
| Platforms | macOS, Windows | No longer available |
| Organizing apps | One profile bar with folders, tabs and tab groups inside each app, and a command palette | A sidebar of sessions, workspaces, and app shortcuts beside your tabs |
| Browsing and links | Links open in your default browser, or follow rules that send them to a specific profile | A full browser, so all your browsing happened inside Sidekick |
What is Singlebox?
Singlebox is a desktop app for the apps you work in every day. Pick from 65,000+ apps in the catalog or add any website, and every app or account becomes its own profile with an isolated session, so all your apps and accounts stay signed in side by side. It runs on macOS and Windows.
What was Sidekick Browser?
Sidekick was a Chromium-based browser for work, with a sidebar of sessions, workspaces, and app shortcuts beside your tabs, plus built-in blocking. Sidekick announced that it would sunset the browser effective August 3, 2025.
1. Your work apps, one click away
Sidekick put your work apps in a sidebar next to your browser tabs, so Gmail, Slack, and your project tools were always within reach.
Singlebox gives those apps a window of their own. Your apps and accounts sit in the profile bar, each a click or a keyboard shortcut away, with unread badges showing where new messages are waiting.
2. Keep the browser you already use
Singlebox isn't a browser you have to switch to. Links to other sites open in your default browser, so if your browser ever changes, your work apps stay where they are.
3. Every account, side by side
In Singlebox, every app or account is its own profile with an isolated session, so your work and personal Gmail, or several Slack workspaces, stay signed in side by side, each with its own unread badge.
4. Built to last
Singlebox is actively developed and updates itself automatically, and your profiles, bookmarks, and settings sync across your computers on every plan.
Moving from Sidekick
- Download Singlebox and sign in.
- Add the apps you kept in Sidekick's sidebar from the catalog, or paste any website's address.
- Sign in to each account. Your general browsing stays in your regular browser, which keeps the browser features you relied on, such as its tab strip.
Which one should you choose?
Since Sidekick is no longer available, the real question is what to use instead. Singlebox is a good replacement if you:
- Want your messaging, email, and work apps one click away
- Use several accounts of the same app
- Want to keep your current browser for browsing
- Want an app that keeps getting updates
Keep your work apps within reach, without changing browsers: try Singlebox for free.
