This Unity Editor Extensions allows you to select the viewing direction for a SceneView with the Blender -like hotkeys. e.g. Numpad 1/3/7 as switch front/right/top view. Numpad 5 as toggle orthographic projection.

17. public Settings(string package, string settingsFileName = "Settings")
public Settings(IEnumerable<ISettingsRepository> repositories)

18. [UserSetting("Input", "Emulate Numpad")]
private static readonly UserSetting<bool> EmulateNumpad = new
UserSetting<bool>(MySettingsManager.Instance,
$"{PackageName}.EmulateNumpad", false, SettingsScope.User);

27. public static void SetDirection(this SceneView sceneView, Vector3 direction)
{
sceneView.rotation = Quaternion.LookRotation(direction);
if (direction == Vector3.down || direction == Vector3.up)
{
sceneView.rotation *= Quaternion.AngleAxis(180f, s_zAxis);
}
}

28. [Test]
public void SetDirection_front()
{
_sceneView.SetDirection(Vector3.back);
Assert.That(_sceneView.rotation.eulerAngles,
Is.EqualTo(new Vector3(0f, 180f, 0f)));
}