In today’s world of endless browser tabs and constant digital multitasking, staying focused is tougher than ever. That’s why site-specific browsers (SSBs) have become increasingly popular—they let you turn any website into a dedicated, distraction-free desktop app. Whether you want a standalone Gmail app, run multiple Slack or Notion accounts, or keep your work and personal apps separated, SSBs can help boost productivity and reduce chaos.
With so many tools available across macOS and Windows, how do you choose the right one? In this guide, we explain what SSBs are, explore why they’re useful, and compare the top tools: WebCatalog Desktop, Progressive Web Apps (PWAs), Coherence, Unite, Fluid, Boxy Suite, and Flotato. We'll also highlight why WebCatalog Desktop stands out as the most versatile and feature-rich option for most users.
What Are Site-Specific Browsers?
A site-specific browser is a specialized app that opens a single website (or web app) in a dedicated window—free from the clutter of tabs, bookmarks, or distracting browser UI. SSBs make web apps feel like native desktop apps, allow you to run multiple accounts in separate windows, keep your work and personal contexts organized, and offer better privacy by isolating data and cookies.
Why Use a Site-Specific Browser?
SSBs offer several key benefits:
- Help you focus with isolated, app-like windows
- Allow multiple logins and account switching
- Integrate with your OS (notifications, dock/taskbar, shortcuts)
- Improve privacy through sandboxing and cookie separation
- Provide options for customization, ad blocking, and offline access
1. WebCatalog Desktop
Platform Support: macOS, Windows, Linux
WebCatalog Desktop offers a powerful cross-platform SSB experience with built-in support for thousands of web apps. It includes advanced workspace features like spaces and subspaces for organizing multiple accounts, privacy-focused sandboxing, and cloud sync to keep your apps in sync across devices. WebCatalog also provides ad-blocking, password or Touch ID protection, and custom app icons.
Pros:
- Cross-platform (Mac, Windows, Linux)
- Cloud sync
- Spaces and subspaces for multi-account management
- Built-in app catalog with deep customization
- Secure sandboxing and ad/tracker blocking
Cons:
- No browser extension support
- Free version has app/space limits
2. Progressive Web Apps (PWAs)
Platform Support: macOS, Windows, Linux, ChromeOS
Progressive Web Apps (PWAs) offer the most lightweight SSB approach, built directly into most modern web browsers, including Google Chrome, Microsoft Edge and Mozilla Firefox. They allow users to install supported web apps as desktop-like apps, with basic OS integration and some offline capabilities. Users can install PWAs directly from the browser, adding them to their desktop or home screen without needing to visit an app store.
Pros:
- Free and browser-native
- No additional software needed
Cons:
- Limited customization and settings
- Multi-account workflows are difficult
- Not all websites support full PWA behavior
3. Coherence
Platform Support: macOS only
Coherence lets you build SSBs using Chrome, Brave, Edge, or Opera as the engine. It supports browser extensions, single or multi-tab modes, and advanced URL handling. While it benefits from Chrome's stability, the team doesn't have full control over the underlying browser, which can affect performance and customization.
Pros:
- Full Chrome extension support
- Customizable icons, behaviors, and multi-tab setup
Cons:
- Mac-only
- Less stable as developers rely on third-party browsers
- Limited control over app environment
4. Unite
Platform Support: macOS only
Unite creates lightweight WebKit-based SSBs with deep macOS integration. It offers features like menu bar mode, compact windows, ad blocking, and CSS overrides. However, it doesn’t support browser extensions and may struggle with Chromium-optimized apps.
Pros:
- Lightweight and fast
- Excellent macOS integration
Cons:
- Mac-only
- No browser extension support
- May not work well with Chrome-first websites
5. Fluid
Platform Support: macOS only
Fluid is a long-standing tool for turning any site into a Mac app using WebKit. It’s simple and lightweight, with some customization options unlocked via Fluid Pro (userscripts, menu bar apps). Its UI is a bit dated and may not support all modern web apps.
Pros:
- Free for basic use
- Easy to set up and run
- Supports basic customization and whitelisting
Cons:
- Mac-only
- No browser extension support
- Limited compatibility with newer web apps
- Outdated interface and slower updates
6. Boxy Suite
Platform Support: macOS only
Boxy Suite focuses exclusively on Google services (Gmail, Calendar, Keep, Contacts). It provides a beautifully designed Mac-native experience, with features like Minimal Mode, Quick Launcher, and dark mode syncing.
Pros:
- Best-in-class Gmail and Calendar experience for Mac
- Polished interface and productivity tools
- Smart integration with macOS
Cons:
- Mac-only
- Works only with Google services
7. Flotato
Platform Support: macOS only
Flotato creates ultra-lightweight apps using mobile versions of websites, reducing CPU and RAM usage. It's great for simple use cases but lacks advanced features.
Pros:
- Very resource-efficient
- Quick to create and launch apps
- Free for single app, affordable Pro upgrade
Cons:
- Free version supports only one running app
- Not ideal for multi-tab or complex workflows
- Limited customization and features
Which Site-Specific Browser Should You Choose?
If you're looking for a powerful, flexible solution that works across Mac, Windows, and Linux, WebCatalog Desktop is the best all-around choice. It supports multiple accounts, syncs your apps across devices, and gives you full control over privacy and app organization.
For a quick, no-cost setup, PWAs are a great option. If you rely on Chrome extensions, try Coherence. Need lightweight, native-feeling apps on Mac? Go for Unite or Fluid. If you're deep in the Google ecosystem, Boxy Suite is tailored for you. And if you just want a simple, fast launcher for lightweight apps, Flotato is worth a try.
Most of these tools offer free versions or trials, so explore a few and find the one that fits your workflow best.