diff --git a/Docs/SupportedAPIs.md b/Docs/SupportedAPIs.md
index 08d4d05..cb258d1 100644
--- a/Docs/SupportedAPIs.md
+++ b/Docs/SupportedAPIs.md
@@ -37,6 +37,8 @@ Contributions to expand support to unimplemented functionality are always welcom
 | GET    | `/session/:sessionId/element/:id/size`              | Supported    | `Element.size`      |
 | GET    | `/session/:sessionId/element/:id/text`              | Supported    | `Element.text`      |
 | POST   | `/session/:sessionId/element/:id/value`             | Supported    | `Element.sendKeys()`|
+| POST   | `/session/:sessionId/execute`                       | Not Supported| `Session.execute()` |
+| POST   | `/session/:sessionId/execute_async`                 | Not Supported| `Session.execute()` |
 | POST   | `/session/:sessionId/forward`                       | Supported    | `Session.forward()` |
 | POST   | `/session/:sessionId/keys`                          | Supported    | `Session.sendKeys()`|
 | GET    | `/session/:sessionId/location`                      | Supported    | Not implemented     |
@@ -44,7 +46,7 @@ Contributions to expand support to unimplemented functionality are always welcom
 | GET    | `/session/:sessionId/orientation`                   | Supported    | `Session.orientation`|
 | POST   | `/session/:sessionId/refresh`                       | Not supported| `Session.refresh()` |
 | GET    | `/session/:sessionId/screenshot`                    | Supported    | `Session.screenshot()`|
-| GET    | `/session/:sessionId/source`                        | Supported    | Not implemented     |
+| GET    | `/session/:sessionId/source`                        | Supported    | `Session.source`    |
 | POST   | `/session/:sessionId/timeouts`                      | Supported    | `Session.setTimeout()`|
 | GET    | `/session/:sessionId/title`                         | Supported    | `Session.title`     |
 | POST   | `/session/:sessionId/touch/click`                   | Supported    | `Element.touchClick()`|
@@ -68,4 +70,4 @@ Contributions to expand support to unimplemented functionality are always welcom
 | GET    | `/session/:sessionId/window/:windowHandle/position` | Supported    | Not implemented     |
 | POST   | `/session/:sessionId/window/:windowHandle/maximize` | Supported    | Not implemented     |
 | GET    | `/session/:sessionId/window_handle`                 | Supported    | Not implemented     |
-| GET    | `/session/:sessionId/window_handles`                | Supported    | Not implemented     |
\ No newline at end of file
+| GET    | `/session/:sessionId/window_handles`                | Supported    | Not implemented     |
diff --git a/Package.swift b/Package.swift
index c03fdfa..a32ec4d 100644
--- a/Package.swift
+++ b/Package.swift
@@ -5,28 +5,37 @@ import PackageDescription
 let package = Package(
     name: "swift-webdriver",
     products: [
-        .library(name: "WebDriver", targets: ["WebDriver", "WinAppDriver"]),
+        .library(name: "WebDriver", targets: ["WebDriver"]),
     ],
     targets: [
         .target(
             name: "WebDriver",
             path: "Sources/WebDriver"),
-        .target(
-            name: "WinAppDriver",
-            dependencies: ["WebDriver"],
-            path: "Sources/WinAppDriver"),
         .target(
             name: "TestsCommon",
             path: "Tests/Common"),
-        .testTarget(
-            name: "WinAppDriverTests",
-            dependencies: ["TestsCommon", "WebDriver", "WinAppDriver"],
-            // Ignore "LNK4217: locally defined symbol imported" spew due to SPM library support limitations
-            linkerSettings: [ .unsafeFlags(["-Xlinker", "-ignore:4217"]) ]),
         .testTarget(
             name: "UnitTests",
-            dependencies: ["TestsCommon", "WebDriver", "WinAppDriver"],
+            dependencies: ["TestsCommon", "WebDriver"],
             // Ignore "LNK4217: locally defined symbol imported" spew due to SPM library support limitations
-            linkerSettings: [ .unsafeFlags(["-Xlinker", "-ignore:4217"]) ]),
+            linkerSettings: [ .unsafeFlags(["-Xlinker", "-ignore:4217"], .when(platforms: [.windows])) ]),
     ]
 )
+
+#if os(Windows)
+package.products += [
+    .library(name: "WinAppDriver", targets: ["WinAppDriver"])
+]
+package.targets += [
+    .target(
+        name: "WinAppDriver",
+        dependencies: ["WebDriver"],
+        path: "Sources/WinAppDriver"),
+    .testTarget(
+        name: "WinAppDriverTests",
+        dependencies: ["TestsCommon", "WebDriver", "WinAppDriver"],
+        // Ignore "LNK4217: locally defined symbol imported" spew due to SPM library support limitations
+        linkerSettings: [ .unsafeFlags(["-Xlinker", "-ignore:4217"]) ]),
+]
+#endif
+
diff --git a/Sources/WebDriver/HTTPWebDriver.swift b/Sources/WebDriver/HTTPWebDriver.swift
index 064266e..acd6a81 100644
--- a/Sources/WebDriver/HTTPWebDriver.swift
+++ b/Sources/WebDriver/HTTPWebDriver.swift
@@ -1,5 +1,7 @@
 import Foundation
+#if canImport(FoundationNetworking)
 import FoundationNetworking
+#endif
 
 public struct HTTPWebDriver: WebDriver {
     let rootURL: URL
diff --git a/Sources/WebDriver/Requests.swift b/Sources/WebDriver/Requests.swift
index a45b360..be4dffd 100644
--- a/Sources/WebDriver/Requests.swift
+++ b/Sources/WebDriver/Requests.swift
@@ -462,6 +462,23 @@ public enum Requests {
         }
     }
 
+    // https://www.selenium.dev/documentation/legacy/json_wire_protocol/#sessionsessionidexecute
+    // https://www.selenium.dev/documentation/legacy/json_wire_protocol/#sessionsessionidexecute_async
+    public struct SessionScript: Request {
+        public var session: String
+        public var script: String
+        public var args: [String]
+        public var async: Bool
+
+        public var pathComponents: [String] { ["session", session, async ? "execute_async" : "execute"] }
+        public var method: HTTPMethod { .post }
+        public var body: Body { .init(script: script, args: args) }
+        public struct Body: Codable {
+            public var script: String
+            public var args: [String]
+        }
+    }
+    
     // https://www.selenium.dev/documentation/legacy/json_wire_protocol/#sessionsessionidwindow
     public enum SessionWindow {
         public struct Post: Request {
@@ -524,6 +541,21 @@ public enum Requests {
         }
     }
 
+    // https://www.selenium.dev/documentation/legacy/json_wire_protocol/#sessionsessionidsource
+    public struct SessionSource: Request {
+        public var session: String 
+
+        public var pathComponents: [String] { ["session", session, "source"] }
+        public var method: HTTPMethod {.get}
+
+        public typealias Response = ResponseWithValue<ResponseValue>
+
+        public struct ResponseValue: Codable {
+            public var source: String
+        }
+
+    }
+
     // https://www.selenium.dev/documentation/legacy/json_wire_protocol/#status
     public struct Status: Request {
         public var pathComponents: [String] { ["status"] }
diff --git a/Sources/WebDriver/Session.swift b/Sources/WebDriver/Session.swift
index 695fb38..312f2bc 100644
--- a/Sources/WebDriver/Session.swift
+++ b/Sources/WebDriver/Session.swift
@@ -73,6 +73,10 @@ public class Session {
             Requests.SessionTimeouts(session: id, type: type, ms: duration * 1000))
     }
 
+    public func execute(script: String, args: [String] = [], async: Bool = false) throws {
+        try webDriver.send(Requests.SessionScript(session: id, script: script, args: args, async: async))
+    }
+
     public func back() throws {
         try webDriver.send(Requests.SessionBack(session: id))
     }
@@ -333,6 +337,15 @@ public class Session {
         return response.value.screenOrientation
     }
 
+
+    /// - Returns: The current page source.
+    public func source() throws -> String {
+        let response = try webDriver.send(Requests.SessionSource(session: id))
+        return response.value.source
+    }
+
+    /// Deletes the current session.
+
     public func delete() throws {
         guard shouldDelete else { return }
         try webDriver.send(Requests.SessionDelete(session: id))
diff --git a/Sources/WebDriver/URLRequestExtensions.swift b/Sources/WebDriver/URLRequestExtensions.swift
index 1739de5..e9edf88 100644
--- a/Sources/WebDriver/URLRequestExtensions.swift
+++ b/Sources/WebDriver/URLRequestExtensions.swift
@@ -1,5 +1,7 @@
 import Foundation
+#if canImport(FoundationNetworking)
 import FoundationNetworking
+#endif
 
 extension URLSession {
     func dataTask(
diff --git a/Sources/WinAppDriver/ErrorResponse+WinAppDriver.swift b/Sources/WinAppDriver/ErrorResponse+WinAppDriver.swift
index 80f288e..7f49d8f 100644
--- a/Sources/WinAppDriver/ErrorResponse+WinAppDriver.swift
+++ b/Sources/WinAppDriver/ErrorResponse+WinAppDriver.swift
@@ -1,3 +1,5 @@
+import WebDriver
+
 extension ErrorResponse.Status {
     // WinAppDriver returns when passing an incorrect window handle to attach to.
     static let winAppDriver_invalidArgument = Self(rawValue: 100)
diff --git a/Tests/UnitTests/APIToRequestMappingTests.swift b/Tests/UnitTests/APIToRequestMappingTests.swift
index 15b8283..41a9828 100644
--- a/Tests/UnitTests/APIToRequestMappingTests.swift
+++ b/Tests/UnitTests/APIToRequestMappingTests.swift
@@ -170,6 +170,20 @@ class APIToRequestMappingTests: XCTestCase {
         XCTAssert(try element.enabled == true)
     }
 
+    func testSessionScript() throws {
+        let mockWebDriver = MockWebDriver()
+        let session = Session(webDriver: mockWebDriver, existingId: "mySession")
+        mockWebDriver.expect(path: "session/mySession/execute", method: .post)
+        XCTAssertNotNil(try session.execute(script: "return document.body", args: ["script"], async: false))
+    }
+
+    func testSessionScriptAsync() throws {
+        let mockWebDriver = MockWebDriver()
+        let session = Session(webDriver: mockWebDriver, existingId: "mySession")
+        mockWebDriver.expect(path: "session/mySession/execute_async", method: .post)
+        XCTAssertNotNil(try session.execute(script: "return document.body", args: ["script"], async: true))
+    }
+
     func testSessionTouchScroll() throws {
         let mockWebDriver: MockWebDriver = MockWebDriver()
         let session = Session(webDriver: mockWebDriver, existingId: "mySession")
@@ -200,6 +214,7 @@ class APIToRequestMappingTests: XCTestCase {
         XCTAssert(try session.size(window: "myWindow") == (width: 500, height: 500))
     }
 
+
     func testWindowOrientation() throws {
         let mockWebDriver: MockWebDriver = MockWebDriver()
         let session = Session(webDriver: mockWebDriver, existingId: "mySession")
@@ -220,4 +235,14 @@ class APIToRequestMappingTests: XCTestCase {
         XCTAssert(try session.orientation() == "LANDSCAPE")
     }
 
+
+    func testSessionSource() throws {
+        let mockWebDriver: MockWebDriver = MockWebDriver()
+        let session = Session(webDriver: mockWebDriver, existingId: "mySession")
+
+        mockWebDriver.expect(path: "session/mySession/source", method: .get, type: Requests.SessionSource.self) {
+            ResponseWithValue(.init(source: "currentSource"))
+        }
+        XCTAssert(try session.source() == "currentSource")
+    }
 }
diff --git a/Tests/UnitTests/CommandLineTests.swift b/Tests/WinAppDriverTests/CommandLineTests.swift
similarity index 100%
rename from Tests/UnitTests/CommandLineTests.swift
rename to Tests/WinAppDriverTests/CommandLineTests.swift