Island browser alternatives and where each fits.

Island alternatives fall into three groups. Dedicated enterprise browsers replace the work browser. Security layers protect browsers people already use. Remote isolation runs page code in a vendor cloud.

Prisma Browser is the closest like-for-like option. Palo Alto offers a browser, extension, and mobile app. Island ships the same three forms. Both target governed enterprise work.

Falcon Seraphic and Akamai Workforce Protector keep existing browsers. CrowdStrike adds runtime security inside them. Akamai adds AI, SaaS, and data controls through an extension. Neither asks users to switch browsers.

Menlo, Zscaler, and Cloudflare offer remote browser isolation. Page code runs in their clouds. Zscaler also sells an extension and an enterprise browser. Legba's Shield mode brings off-device isolation to personal browsing.

Island and Legba both affect browsing. Their security boundaries remain different. Island governs work inside endpoint browsers. Legba can move selected execution away.

Island can become the daily work browser. Its extension extends controls elsewhere. Legba remains a focused Chrome extension. It does not replace a work environment.

Browser ownership should guide evaluation. Workforce transformation favors Island. Personal routing and isolation favor Legba. Feature totals obscure this boundary.

Existing Island deployments hold operating value. Policies and workflows already exist. Removing them can increase risk. Island usually wins inside those estates.

Island provides a Chromium-based enterprise browser. Organizations manage work through that browser. Its extension covers Chrome, Edge, Safari, and Firefox. The extension also covers ChatGPT Atlas and Perplexity Comet.

Island applies policies inside browser activity. Its controls cover printing, downloads, screenshots, and copy and paste. Island says they apply even outside the browser. Island also sets conditional access by identity and device.

Island assesses device posture against policy. It delivers zero trust access to private apps. It captures full session details for admin consoles. It also automates common web workflows.

Island is not classic remote isolation. Pages generally run on the endpoint. Controls act within the browser. That design can preserve native experiences.

Island announced a $400 million Series F in September 2026. The round valued Island at $6.4 billion. Island now calls itself the agentic control plane for enterprises.

Legba offers two Chrome extension modes. Ghost gives Chrome a private route. Shield opens pages off your device. Users choose the needed boundary.

Shield changes the execution location. Island primarily governs endpoint browser activity. That distinction matters for isolated-page buyers. It also narrows Legba's product scope.

Legba does not create a work browser. It lacks enterprise application policies. It lacks Island's data controls. It lacks privileged session visibility.

Legba's limits are central, not footnotes. Legba fits personal browsing jobs. Island fits managed workforce jobs. Each product should keep its boundary.

Most comparisons start with feature lists. This model starts with working behavior. It asks who owns the browser. It asks where code executes.

The answers expose product fit quickly. Island governs the work surface. Legba isolates selected personal sessions. Neither shape dominates every environment.

Island's browser runs on Windows, macOS, Linux, and ChromeOS. Mobile coverage includes iOS, iPadOS, and Android. Island also lists IGEL OS. Its enterprise browser offers one managed surface.

Extension support does not mean full parity. Island says its extension supports most full-browser capabilities. Buyers should map required controls by browser. Mixed fleets need product-specific testing.

Legba runs only in Chromium-based browsers. That narrower support simplifies its promise. It also excludes important fleet cases. Safari and Firefox users need alternatives.

Coverage matters only when required. One Chrome user gains little from fleet breadth. A global workforce gains considerable value. Context decides whether breadth matters.

Island controls data inside work sessions. Policies can govern printing and downloads. They can restrict screenshots and clipboard actions. These controls support organizational governance.

Island also connects application access decisions. Device posture can influence access. Private applications can stay behind policies. Privileged sessions gain additional visibility.

Legba does not offer that control plane. It does not replace enterprise DLP. It does not provide workforce application governance. Those omissions are material.

Personal buyers may not need those systems. Enterprise buyers often need several. Do not trade mandatory governance for simplicity. Do not buy governance without owners.

Island's controls operate within endpoint browsers. That model preserves local browser behavior. It also keeps execution on the endpoint. Governance and isolation remain different concepts.

Legba's Shield mode changes execution location. Selected pages open away from the device. That narrower behavior serves isolation directly. It does not create Island-style governance.

Neither architecture is automatically stronger. Local execution can improve native compatibility. Remote execution can reduce endpoint exposure. Each boundary creates different tradeoffs.

Buyers should name their required boundary. Do they need governed local work? Do they need selected off-device execution? The answer separates these products.

Island uses a sales-led buying process. Its quote page offers a custom quote. Island says pricing depends on each customer's needs. No public dollar price appears.

Legba publishes extension pricing publicly. A public trial supports direct testing. This reduces procurement effort. It does not replace enterprise controls.

Total cost includes operating labor. Island needs policy ownership and rollout. Legba needs user installation and support. Different jobs produce different cost shapes.

Avoid comparing one license number alone. Include administrators and device coverage. Include migration and support requirements. Then compare the full operating picture.

A browser change touches daily work. Small failures can become large costs. Pilots should cover ordinary and privileged users. They should include unmanaged devices.

Start with required workflows. Test sign-in and private applications. Test printing and file movement. Test every supported browser form.

Compare policy work alongside user experience. Island administrators need manageable controls. Legba users need reliable extension behavior. Neither perspective should disappear.

Keep the pilot reversible. Continue existing controls during testing. Record reasons behind each result. Choose only after mandatory outcomes pass.

Island is the stronger enterprise browser. It governs daily work and data. It supports broader endpoint environments. It deserves enterprise evaluation.

Legba is the smaller isolation option. It serves personal Chrome workflows. Shield changes selected execution location. Ghost supplies a private route.

Choose Island when workforce governance matters. Choose Island for mixed device fleets. Choose Island for privileged activity visibility. Those are clear wins.

Evaluate Legba when selected isolation matters. Keep expectations within its scope. The best decision follows the boundary.