Arc

A new web browser with a ton of personality

4.8•238 reviews•

4.6K followers

A new web browser with a ton of personality

4.8•238 reviews•

4.6K followers

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Safety and Privacy platforms

A browser that promotes organization and concentration. It is flexible and able to adapt to the most specific individual needs.

The Best Arc Alternatives

The best Arc alternatives are SigmaOS Browser, Sidekick Browser, Zen Browser, Opera, and Dia Browser.

SigmaOS Browser

4.1 ·

Choose SigmaOS Browser if...

✓you want mac-native WebKit with Apple Keychain
✓you prefer tabs as tasks you can complete
✓you work mostly from keyboard and command palette

See details ↓

Sidekick Browser

4.1 ·

Choose Sidekick Browser if...

✓you want sessions to close and resume tab sets
✓you juggle many web apps and accounts daily
✓you need aggressive tab suspension for low RAM

See details ↓

Zen Browser

4.8 ·

Choose Zen Browser if...

✓you want open-source Firefox with Arc-like layout
✓you rely on Firefox add-ons and Containers
✓you want privacy-first without Chromium

See details ↓

Opera

4.4 ·

Choose Opera if...

✓you want built-in VPN and ad blocker
✓you like messenger and music apps in sidebar
✓you want gestures and lightweight default features

See details ↓

Dia Browser

4.7 ·

Choose Dia Browser if...

✓you want AI chat that understands tab context
✓you want reusable prompt workflows with Skills
✓you need Chromium extensions with an AI-first UI

See details ↓

What to Consider

Arc has earned its following by rethinking tab clutter with Spaces, a sidebar-first UI, and a “work browser” vibe that feels built for modern knowledge work. The alternatives landscape splits in a few clear directions: SigmaOS leans into a Mac-native, keyboard-driven “tabs as tasks” workflow; Sidekick optimizes for sessions, app sidebars, and aggressive resource management; Zen brings Arc-like ergonomics to an open-source, Firefox-based, privacy-first stack; Opera goes the all-in-one route with built-in utilities like VPN/ad blocking and messenger sidebars; and Dia (from the Arc team) shifts the center of gravity toward AI with “chat with your tabs” and reusable Skills.

In evaluating options, we focused on how each browser handles organization (workspaces, sessions, vertical tabs, splits), real-world compatibility (extensions, SSO/login flows, site reliability), performance and stability under heavy use, platform availability, and the trade-offs around pricing, support responsiveness, and privacy/ownership (open-source vs proprietary and AI-native features).

SigmaOS Browser

The new home for your internet 🏡

4.1 · 40 reviews

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SigmaOS takes a macOS-native, WebKit-first approach that appeals to people who want a “work browser” feel without living entirely in the Chromium ecosystem. It’s a strong Arc alternative when the priority is tight integration with Mac conventions and a minimal interface that stays out of the way.

The defining difference is its “tabs as tasks” model: tabs can be renamed, locked, and treated like items to finish rather than clutter to tolerate. That task-centric workflow can feel more intentional than Arc’s pinned vs Today tabs when daily browsing is tied to checklists, research queues, and recurring routines.

SigmaOS also leans hard into keyboard-driven navigation with a command palette and shortcut-heavy flow designed for speed. Pair that with workspaces and split-screen, and it becomes a productivity environment that rewards learning a few core commands.

The main trade-offs versus Arc tend to show up in compatibility edges—especially around extensions and certain enterprise or institutional login flows—so it fits best when the workflow lives in common web apps and the UI philosophy matters more than maximum add-on coverage.

Best for

Best for macOS power users who want a keyboard-first, task-oriented browsing workflow.

Standout features

✓Tabs managed as tasks you can complete
✓Command palette and keyboard-first navigation
✓Workspaces for organizing projects and contexts
✓Split-screen browsing for multitasking

Sidekick Browser

The fastest browser built for work.

4.1 · 62 reviews

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Sidekick is built around sessions, making it a compelling alternative to Arc for people whose work naturally breaks into distinct contexts. Instead of keeping everything open all day, it encourages saving sets of tabs, closing them, and resuming later without the usual tab chaos.

Its sidebar “apps” approach is especially strong for SaaS-heavy roles: key tools like mail, chat, calendars, and docs can stay pinned and accessible while your main tab area stays focused on the active session. Multi-account handling at the app level can also reduce friction for people who juggle multiple inboxes or client logins.

Sidekick differentiates with performance-focused features like tab suspension and resource controls that aim to keep the browser responsive even with lots of work in flight. Focus modes, distraction blocking, and built-in convenience features further tilt it toward “get work done” rather than browsing for browsing’s sake.

The trade-off is that it’s a more commercial, subscription-leaning package and can be more polarizing on trust and polish depending on the specific feature set used. It’s best when sessions, app switching, and memory management matter more than Arc’s specific UI conventions.

Best for

Ideal for SaaS-heavy knowledge workers who need session-based tab control and fast context switching.

Standout features

✓Sessions to save and restore tab sets
✓Sidebar apps with persistent state
✓Multi-account web apps
✓Tab suspension and resource management
✓Focus modes and distraction blocking

Zen Browser

Beautifully designed, privacy-focused

4.8 · 9 reviews

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Zen Browser stands out by bringing Arc-like ergonomics to a Firefox-based, open-source foundation. For anyone trying to keep the vertical-tabs-and-workspaces feel while moving away from Chromium, it’s one of the most direct substitutes.

The experience emphasizes organization: workspaces, vertical tabs, pinned and grouped tabs, and split view help recreate the structured “projects” mindset that Arc popularized. Where it can pull ahead is pairing that layout with Firefox’s ecosystem, including add-ons and privacy-oriented capabilities like Containers for separating identities and logins.

Zen also leans into customization and theming, making it easier to dial in a clean interface without feeling locked into one opinionated style. Frequent iteration and community momentum make it feel more like a fast-moving project than a static fork.

Because it’s still maturing, occasional rough edges can appear, but the trade-off is more transparency and control than most proprietary browsers. Choose it when open-source values, Firefox compatibility, and Arc-inspired layout matter most.

Best for

Best for privacy-minded users who want an Arc-like workflow on Firefox.

Standout features

✓Firefox-based with add-on compatibility
✓Vertical tabs and workspace organization
✓Split view for multi-pane browsing
✓Container-style identity separation support
✓Extensive theming and customization

Opera

Opera isn't just a browser. It's an awesome browser.

4.4 · 15 reviews

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Opera competes less on “new tab philosophy” and more on shipping a feature-complete browser that works out of the box. It’s a strong Arc alternative for people who want built-in utilities rather than a browser that expects customization through extensions.

Its bundled VPN and ad blocker are central differentiators, especially for users who value quick privacy and cleaner pages without configuring extra tools. Add the sidebar integrations for messaging and social apps, and Opera becomes a multitasking hub for people who constantly switch between conversations and web research.

Opera also appeals to power users who like browser interaction features such as mouse gestures and familiar navigation behaviors that can speed up day-to-day use. Battery saver options and general “daily driver” pragmatism make it feel optimized for laptops and long sessions.

The trade-off is that it won’t satisfy everyone looking for Arc-style vertical tab management and deeply opinionated workspace organization. It’s the better pick when convenience features, utility, and an all-in-one setup matter more than a reinvented UI.

Best for

Ideal for multitaskers who want built-in VPN, ad blocking, and sidebar apps.

Standout features

✓Built-in VPN
✓Built-in ad blocker
✓Sidebar messaging and social integrations
✓Mouse gestures and productivity navigation
✓Battery saver mode

Dia Browser

The AI browser where you can chat with your tabs

4.7 · 6 reviews

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Dia Browser reframes the browser around AI, making it a fundamentally different alternative to Arc’s organization-first identity. It’s designed for people who want the browser to help think, summarize, and transform what’s on screen, not just display it.

The core promise is “chat with your tabs,” where the assistant can use page context for research, writing, and quick synthesis. Reusable Skills (saved prompt workflows) make it easy to turn repeated tasks—summaries, drafts, comparisons, extraction—into one-click routines.

Because Dia is Chromium-based, it also preserves extension continuity for users who rely on the Chrome ecosystem. That lowers switching costs compared with non-Chromium options, while still giving a more integrated AI experience than bolting on third-party assistants.

The main compromise is that its tab and switching model can feel less refined for people who loved Arc’s exact tab mechanics. Dia fits best when AI-assisted browsing is the priority and the browser is expected to act like an intelligent work surface.