diff --git a/Sources/mas/Commands/Home.swift b/Sources/mas/Commands/Home.swift
index 8d86a5f..531b6c5 100644
--- a/Sources/mas/Commands/Home.swift
+++ b/Sources/mas/Commands/Home.swift
@@ -7,6 +7,7 @@
 //
 
 import ArgumentParser
+import Foundation
 
 extension MAS {
     /// Opens app page on MAS Preview. Uses the iTunes Lookup API:
@@ -21,29 +22,19 @@ extension MAS {
 
         /// Runs the command.
         func run() throws {
-            try run(searcher: ITunesSearchAppStoreSearcher(), openCommand: OpenSystemCommand())
+            try run(searcher: ITunesSearchAppStoreSearcher())
         }
 
-        func run(searcher: AppStoreSearcher, openCommand: ExternalCommand) throws {
-            do {
-                guard let result = try searcher.lookup(appID: appID).wait() else {
-                    throw MASError.noSearchResultsFound
-                }
-
-                do {
-                    try openCommand.run(arguments: result.trackViewUrl)
-                } catch {
-                    printError("Unable to launch open command")
-                    throw MASError.searchFailed
-                }
-                if openCommand.failed {
-                    let reason = openCommand.process.terminationReason
-                    printError("Open failed: (\(reason)) \(openCommand.stderr)")
-                    throw MASError.searchFailed
-                }
-            } catch {
-                throw error as? MASError ?? .searchFailed
+        func run(searcher: AppStoreSearcher) throws {
+            guard let result = try searcher.lookup(appID: appID).wait() else {
+                throw MASError.noSearchResultsFound
             }
+
+            guard let url = URL(string: result.trackViewUrl) else {
+                throw MASError.runtimeError("Unable to construct URL from: \(result.trackViewUrl)")
+            }
+
+            try url.open().wait()
         }
     }
 }
diff --git a/Sources/mas/Commands/Open.swift b/Sources/mas/Commands/Open.swift
index 09f0c8d..b56f00b 100644
--- a/Sources/mas/Commands/Open.swift
+++ b/Sources/mas/Commands/Open.swift
@@ -8,7 +8,6 @@
 
 import AppKit
 import ArgumentParser
-import Foundation
 import PromiseKit
 
 private let masScheme = "macappstore"
@@ -35,7 +34,7 @@ extension MAS {
                 try openMacAppStore().wait()
                 return
             }
-            try openInMacAppStore(pageForAppID: appID, searcher: searcher).wait()
+            try openInMacAppStore(pageForAppID: appID, searcher: searcher)
         }
     }
 }
@@ -63,32 +62,20 @@ private func openMacAppStore() -> Promise<Void> {
     }
 }
 
-private func openInMacAppStore(pageForAppID appID: AppID, searcher: AppStoreSearcher) -> Promise<Void> {
-    Promise { seal in
-        guard let result = try searcher.lookup(appID: appID).wait() else {
-            throw MASError.runtimeError("Unknown app ID \(appID)")
-        }
-
-        guard var urlComponents = URLComponents(string: result.trackViewUrl) else {
-            throw MASError.runtimeError("Unable to construct URL from: \(result.trackViewUrl)")
-        }
-
-        urlComponents.scheme = masScheme
-
-        guard let url = urlComponents.url else {
-            throw MASError.runtimeError("Unable to construct URL from: \(urlComponents)")
-        }
-
-        if #available(macOS 10.15, *) {
-            NSWorkspace.shared.open(url, configuration: NSWorkspace.OpenConfiguration()) { _, error in
-                if let error {
-                    seal.reject(error)
-                }
-                seal.fulfill(())
-            }
-        } else {
-            NSWorkspace.shared.open(url)
-            seal.fulfill(())
-        }
+private func openInMacAppStore(pageForAppID appID: AppID, searcher: AppStoreSearcher) throws {
+    guard let result = try searcher.lookup(appID: appID).wait() else {
+        throw MASError.runtimeError("Unknown app ID \(appID)")
     }
+
+    guard var urlComponents = URLComponents(string: result.trackViewUrl) else {
+        throw MASError.runtimeError("Unable to construct URL from: \(result.trackViewUrl)")
+    }
+
+    urlComponents.scheme = masScheme
+
+    guard let url = urlComponents.url else {
+        throw MASError.runtimeError("Unable to construct URL from: \(urlComponents)")
+    }
+
+    try url.open().wait()
 }
diff --git a/Sources/mas/Commands/Vendor.swift b/Sources/mas/Commands/Vendor.swift
index d303c94..7256d85 100644
--- a/Sources/mas/Commands/Vendor.swift
+++ b/Sources/mas/Commands/Vendor.swift
@@ -7,6 +7,7 @@
 //
 
 import ArgumentParser
+import Foundation
 
 extension MAS {
     /// Opens vendor's app page in a browser. Uses the iTunes Lookup API:
@@ -21,33 +22,23 @@ extension MAS {
 
         /// Runs the command.
         func run() throws {
-            try run(searcher: ITunesSearchAppStoreSearcher(), openCommand: OpenSystemCommand())
+            try run(searcher: ITunesSearchAppStoreSearcher())
         }
 
-        func run(searcher: AppStoreSearcher, openCommand: ExternalCommand) throws {
-            do {
-                guard let result = try searcher.lookup(appID: appID).wait() else {
-                    throw MASError.noSearchResultsFound
-                }
-
-                guard let vendorWebsite = result.sellerUrl else {
-                    throw MASError.noVendorWebsite
-                }
-
-                do {
-                    try openCommand.run(arguments: vendorWebsite)
-                } catch {
-                    printError("Unable to launch open command")
-                    throw MASError.searchFailed
-                }
-                if openCommand.failed {
-                    let reason = openCommand.process.terminationReason
-                    printError("Open failed: (\(reason)) \(openCommand.stderr)")
-                    throw MASError.searchFailed
-                }
-            } catch {
-                throw error as? MASError ?? .searchFailed
+        func run(searcher: AppStoreSearcher) throws {
+            guard let result = try searcher.lookup(appID: appID).wait() else {
+                throw MASError.noSearchResultsFound
             }
+
+            guard let urlString = result.sellerUrl else {
+                throw MASError.noVendorWebsite
+            }
+
+            guard let url = URL(string: urlString) else {
+                throw MASError.runtimeError("Unable to construct URL from: \(urlString)")
+            }
+
+            try url.open().wait()
         }
     }
 }
diff --git a/Sources/mas/Controllers/ITunesSearchAppStoreSearcher.swift b/Sources/mas/Controllers/ITunesSearchAppStoreSearcher.swift
index cc1939f..babaab9 100644
--- a/Sources/mas/Controllers/ITunesSearchAppStoreSearcher.swift
+++ b/Sources/mas/Controllers/ITunesSearchAppStoreSearcher.swift
@@ -85,9 +85,9 @@ class ITunesSearchAppStoreSearcher: AppStoreSearcher {
         // Search for apps for compatible platforms, in order of preference.
         // Macs with Apple Silicon can run iPad and iPhone apps.
         var entities = [Entity.desktopSoftware]
-        if SysCtlSystemCommand.isAppleSilicon {
-            entities += [.iPadSoftware, .iPhoneSoftware]
-        }
+        #if arch(arm64)
+        entities += [.iPadSoftware, .iPhoneSoftware]
+        #endif
 
         let results = entities.map { entity in
             guard let url = searchURL(for: searchTerm, inCountry: country, ofEntity: entity) else {
diff --git a/Sources/mas/ExternalCommands/ExternalCommand.swift b/Sources/mas/ExternalCommands/ExternalCommand.swift
deleted file mode 100644
index b5a3487..0000000
--- a/Sources/mas/ExternalCommands/ExternalCommand.swift
+++ /dev/null
@@ -1,63 +0,0 @@
-//
-//  ExternalCommand.swift
-//  mas
-//
-//  Created by Ben Chatelain on 1/1/19.
-//  Copyright © 2019 mas-cli. All rights reserved.
-//
-
-import Foundation
-
-/// Represents a CLI command.
-protocol ExternalCommand {
-    var binaryPath: String { get set }
-
-    var process: Process { get }
-
-    var stdout: String { get }
-    var stderr: String { get }
-    var stdoutPipe: Pipe { get }
-    var stderrPipe: Pipe { get }
-
-    var exitCode: Int32 { get }
-    var succeeded: Bool { get }
-    var failed: Bool { get }
-
-    /// Runs the command.
-    func run(arguments: String...) throws
-}
-
-/// Common implementation
-extension ExternalCommand {
-    var stdout: String {
-        let data = stdoutPipe.fileHandleForReading.readDataToEndOfFile()
-        return String(data: data, encoding: .utf8) ?? ""
-    }
-
-    var stderr: String {
-        let data = stderrPipe.fileHandleForReading.readDataToEndOfFile()
-        return String(data: data, encoding: .utf8) ?? ""
-    }
-
-    var exitCode: Int32 {
-        process.terminationStatus
-    }
-
-    var succeeded: Bool {
-        process.terminationReason == .exit && exitCode == 0
-    }
-
-    var failed: Bool {
-        !succeeded
-    }
-
-    /// Runs the command.
-    func run(arguments: String...) throws {
-        process.standardOutput = stdoutPipe
-        process.standardError = stderrPipe
-        process.arguments = arguments
-        process.executableURL = URL(fileURLWithPath: binaryPath)
-        try process.run()
-        process.waitUntilExit()
-    }
-}
diff --git a/Sources/mas/ExternalCommands/OpenSystemCommand.swift b/Sources/mas/ExternalCommands/OpenSystemCommand.swift
deleted file mode 100644
index 5d5e3cc..0000000
--- a/Sources/mas/ExternalCommands/OpenSystemCommand.swift
+++ /dev/null
@@ -1,23 +0,0 @@
-//
-//  OpenSystemCommand.swift
-//  mas
-//
-//  Created by Ben Chatelain on 1/2/19.
-//  Copyright © 2019 mas-cli. All rights reserved.
-//
-
-import Foundation
-
-/// Wrapper for the external 'open' system command (https://ss64.com/osx/open.html).
-struct OpenSystemCommand: ExternalCommand {
-    var binaryPath: String
-
-    let process = Process()
-
-    let stdoutPipe = Pipe()
-    let stderrPipe = Pipe()
-
-    init(binaryPath: String = "/usr/bin/open") {
-        self.binaryPath = binaryPath
-    }
-}
diff --git a/Sources/mas/ExternalCommands/SysCtlSystemCommand.swift b/Sources/mas/ExternalCommands/SysCtlSystemCommand.swift
deleted file mode 100644
index 1d04a2e..0000000
--- a/Sources/mas/ExternalCommands/SysCtlSystemCommand.swift
+++ /dev/null
@@ -1,41 +0,0 @@
-//
-//  SysCtlSystemCommand.swift
-//  mas
-//
-//  Created by Chris Araman on 6/3/21.
-//  Copyright © 2021 mas-cli. All rights reserved.
-//
-
-import Foundation
-
-/// Wrapper for the external 'sysctl' system command.
-///
-/// See - https://ss64.com/osx/sysctl.html
-struct SysCtlSystemCommand: ExternalCommand {
-    static var isAppleSilicon: Bool = {
-        let sysctl = Self()
-        do {
-            // Returns 1 on Apple Silicon even when run in an Intel context in Rosetta.
-            try sysctl.run(arguments: "-in", "hw.optional.arm64")
-        } catch {
-            fatalError("sysctl failed")
-        }
-
-        guard sysctl.succeeded else {
-            fatalError("sysctl failed")
-        }
-
-        return sysctl.stdout.trimmingCharacters(in: .newlines) == "1"
-    }()
-
-    let process = Process()
-
-    let stdoutPipe = Pipe()
-    let stderrPipe = Pipe()
-
-    var binaryPath: String
-
-    init(binaryPath: String = "/usr/sbin/sysctl") {
-        self.binaryPath = binaryPath
-    }
-}
diff --git a/Sources/mas/Network/URL.swift b/Sources/mas/Network/URL.swift
new file mode 100644
index 0000000..538c1a9
--- /dev/null
+++ b/Sources/mas/Network/URL.swift
@@ -0,0 +1,32 @@
+//
+//  URL.swift
+//  mas
+//
+//  Created by Ross Goldberg on 2024-10-28.
+//  Copyright © 2024 mas-cli. All rights reserved.
+//
+
+import AppKit
+import Foundation
+import PromiseKit
+
+extension URL {
+    func open() -> Promise<Void> {
+        Promise { seal in
+            if #available(macOS 10.15, *) {
+                NSWorkspace.shared.open(self, configuration: NSWorkspace.OpenConfiguration()) { _, error in
+                    if let error {
+                        seal.reject(error)
+                    }
+                    seal.fulfill(())
+                }
+            } else {
+                if NSWorkspace.shared.open(self) {
+                    seal.fulfill(())
+                } else {
+                    seal.reject(MASError.runtimeError("Failed to open \(self)"))
+                }
+            }
+        }
+    }
+}
diff --git a/Tests/masTests/Commands/HomeSpec.swift b/Tests/masTests/Commands/HomeSpec.swift
index 8d3faac..c92b58b 100644
--- a/Tests/masTests/Commands/HomeSpec.swift
+++ b/Tests/masTests/Commands/HomeSpec.swift
@@ -14,7 +14,6 @@ import Quick
 public class HomeSpec: QuickSpec {
     override public func spec() {
         let searcher = MockAppStoreSearcher()
-        let openCommand = MockOpenSystemCommand()
 
         beforeSuite {
             MAS.initialize()
@@ -25,13 +24,13 @@ public class HomeSpec: QuickSpec {
             }
             it("fails to open app with invalid ID") {
                 expect {
-                    try MAS.Home.parse(["--", "-999"]).run(searcher: searcher, openCommand: openCommand)
+                    try MAS.Home.parse(["--", "-999"]).run(searcher: searcher)
                 }
                 .to(throwError())
             }
             it("can't find app with unknown ID") {
                 expect {
-                    try MAS.Home.parse(["999"]).run(searcher: searcher, openCommand: openCommand)
+                    try MAS.Home.parse(["999"]).run(searcher: searcher)
                 }
                 .to(throwError(MASError.noSearchResultsFound))
             }
@@ -43,11 +42,8 @@ public class HomeSpec: QuickSpec {
                 )
                 searcher.apps[mockResult.trackId] = mockResult
                 expect {
-                    try MAS.Home.parse([String(mockResult.trackId)])
-                        .run(searcher: searcher, openCommand: openCommand)
-                    return openCommand.arguments
+                    try MAS.Home.parse([String(mockResult.trackId)]).run(searcher: searcher)
                 }
-                    == [mockResult.trackViewUrl]
             }
         }
     }
diff --git a/Tests/masTests/Commands/VendorSpec.swift b/Tests/masTests/Commands/VendorSpec.swift
index 1834cb3..5c7eb95 100644
--- a/Tests/masTests/Commands/VendorSpec.swift
+++ b/Tests/masTests/Commands/VendorSpec.swift
@@ -14,7 +14,6 @@ import Quick
 public class VendorSpec: QuickSpec {
     override public func spec() {
         let searcher = MockAppStoreSearcher()
-        let openCommand = MockOpenSystemCommand()
 
         beforeSuite {
             MAS.initialize()
@@ -25,13 +24,13 @@ public class VendorSpec: QuickSpec {
             }
             it("fails to open app with invalid ID") {
                 expect {
-                    try MAS.Vendor.parse(["--", "-999"]).run(searcher: searcher, openCommand: openCommand)
+                    try MAS.Vendor.parse(["--", "-999"]).run(searcher: searcher)
                 }
                 .to(throwError())
             }
             it("can't find app with unknown ID") {
                 expect {
-                    try MAS.Vendor.parse(["999"]).run(searcher: searcher, openCommand: openCommand)
+                    try MAS.Vendor.parse(["999"]).run(searcher: searcher)
                 }
                 .to(throwError(MASError.noSearchResultsFound))
             }
@@ -44,11 +43,8 @@ public class VendorSpec: QuickSpec {
                 )
                 searcher.apps[mockResult.trackId] = mockResult
                 expect {
-                    try MAS.Vendor.parse([String(mockResult.trackId)])
-                        .run(searcher: searcher, openCommand: openCommand)
-                    return openCommand.arguments
+                    try MAS.Vendor.parse([String(mockResult.trackId)]).run(searcher: searcher)
                 }
-                    == [mockResult.sellerUrl]
             }
         }
     }
diff --git a/Tests/masTests/ExternalCommands/MockOpenSystemCommand.swift b/Tests/masTests/ExternalCommands/MockOpenSystemCommand.swift
deleted file mode 100644
index da30e13..0000000
--- a/Tests/masTests/ExternalCommands/MockOpenSystemCommand.swift
+++ /dev/null
@@ -1,27 +0,0 @@
-//
-//  MockOpenSystemCommand.swift
-//  masTests
-//
-//  Created by Ben Chatelain on 1/4/19.
-//  Copyright © 2019 mas-cli. All rights reserved.
-//
-
-import Foundation
-
-@testable import mas
-
-class MockOpenSystemCommand: ExternalCommand {
-    // Stub out protocol logic
-    var succeeded = true
-    var arguments: [String] = []
-
-    // unused
-    var binaryPath = "/dev/null"
-    var process = Process()
-    var stdoutPipe = Pipe()
-    var stderrPipe = Pipe()
-
-    func run(arguments: String...) throws {
-        self.arguments = arguments
-    }
-}
diff --git a/Tests/masTests/ExternalCommands/OpenSystemCommandSpec.swift b/Tests/masTests/ExternalCommands/OpenSystemCommandSpec.swift
deleted file mode 100644
index 9b8c1f5..0000000
--- a/Tests/masTests/ExternalCommands/OpenSystemCommandSpec.swift
+++ /dev/null
@@ -1,30 +0,0 @@
-//
-//  OpenSystemCommandSpec.swift
-//  masTests
-//
-//  Created by Ben Chatelain on 2/24/20.
-//  Copyright © 2020 mas-cli. All rights reserved.
-//
-
-import Nimble
-import Quick
-
-@testable import mas
-
-public class OpenSystemCommandSpec: QuickSpec {
-    override public func spec() {
-        beforeSuite {
-            MAS.initialize()
-        }
-        describe("open system command") {
-            context("binary path") {
-                it("defaults to the macOS open command") {
-                    expect(OpenSystemCommand().binaryPath) == "/usr/bin/open"
-                }
-                it("can be overridden") {
-                    expect(OpenSystemCommand(binaryPath: "/dev/null").binaryPath) == "/dev/null"
-                }
-            }
-        }
-    }
-}