diff --git a/00_Utilities/DotnetUtils/DotnetUtils/Functions.cs b/00_Utilities/DotnetUtils/DotnetUtils/Functions.cs
new file mode 100644
index 00000000..7fa3115c
--- /dev/null
+++ b/00_Utilities/DotnetUtils/DotnetUtils/Functions.cs
@@ -0,0 +1,21 @@
+using System.Xml.Linq;
+
+namespace DotnetUtils;
+
+public static class Functions {
+    public static string? getValue(string path, params string[] names) {
+        if (names.Length == 0) { throw new InvalidOperationException(); }
+        var parent = XDocument.Load(path).Element("Project")?.Element("PropertyGroup");
+        return getValue(parent, names);
+    }
+
+    public static string? getValue(XElement? parent, params string[] names) {
+        if (names.Length == 0) { throw new InvalidOperationException(); }
+        XElement? elem = null;
+        foreach (var name in names) {
+            elem = parent?.Element(name);
+            if (elem != null) { break; }
+        }
+        return elem?.Value;
+    }
+}
diff --git a/00_Utilities/DotnetUtils/DotnetUtils/Methods.cs b/00_Utilities/DotnetUtils/DotnetUtils/Methods.cs
index 2aafa800..a8d3532b 100644
--- a/00_Utilities/DotnetUtils/DotnetUtils/Methods.cs
+++ b/00_Utilities/DotnetUtils/DotnetUtils/Methods.cs
@@ -44,6 +44,38 @@ public static class Methods {
         process.WaitForExit();
         return new ProcessResult(process.ExitCode, output, error);
     }
+
+    public static Task<ProcessResult> RunProcessAsync(Process process, string input = "") {
+        var tcs = new TaskCompletionSource<ProcessResult>();
+        var (output, error) = ("", "");
+        var (redirectOut, redirectErr) = (
+            process.StartInfo.RedirectStandardOutput,
+            process.StartInfo.RedirectStandardError
+        );
+
+        process.Exited += (s, e) => tcs.SetResult(new ProcessResult(process.ExitCode, output, error));
+
+        if (redirectOut) {
+            process.OutputDataReceived += (s, ea) => output += ea.Data + "\n";
+        }
+        if (redirectErr) {
+            process.ErrorDataReceived += (s, ea) => error += ea.Data + "\n";
+        }
+
+        if (!process.Start()) {
+            // what happens to the Exited event if process doesn't start successfully?
+            throw new InvalidOperationException();
+        }
+
+        if (redirectOut) { process.BeginOutputReadLine(); }
+        if (redirectErr) { process.BeginErrorReadLine(); }
+        if (!string.IsNullOrEmpty(input)) {
+            process.StandardInput.WriteLine(input);
+            process.StandardInput.Close();
+        }
+
+        return tcs.Task;
+    }
 }
 
 public sealed record ProcessResult(int ExitCode, string StdOut, string StdErr) {
diff --git a/00_Utilities/DotnetUtils/DotnetUtils/Program.cs b/00_Utilities/DotnetUtils/DotnetUtils/Program.cs
index e8ea235e..6121d131 100644
--- a/00_Utilities/DotnetUtils/DotnetUtils/Program.cs
+++ b/00_Utilities/DotnetUtils/DotnetUtils/Program.cs
@@ -1,7 +1,9 @@
-using DotnetUtils;
+using System.Xml.Linq;
+using DotnetUtils;
 using static System.Console;
 using static System.IO.Path;
 using static DotnetUtils.Methods;
+using static DotnetUtils.Functions;
 
 var infos = PortInfos.Get;
 
@@ -13,6 +15,8 @@ var actions = new (Action action, string description)[] {
     (missingProj, "Output missing project file"),
     (unexpectedProjName, "Output misnamed project files"),
     (multipleProjs, "Output multiple project files"),
+    (checkProjects, "Check .csproj/.vbproj files for target framework, nullability etc."),
+    (checkExecutableProject, "Check that there is at least one executable project per port"),
 
     (generateMissingSlns, "Generate solution files when missing"),
     (generateMissingProjs, "Generate project files when missing")
@@ -220,12 +224,66 @@ void generateMissingProjs() {
 }
 
 void checkProjects() {
-    // warn if project files do not:
-    //      target .NET 6
-    //      implicit using
-    //      nullable enable
-    // warn if none og the projects have:
-    //      output type exe
+    foreach (var (proj,item) in infos.SelectMany(item => item.Projs.Select(proj => (proj,item)))) {
+        var warnings = new List<string>();
+        var parent = XDocument.Load(proj).Element("Project")?.Element("PropertyGroup");
+
+        var (
+            framework,
+            nullable,
+            implicitUsing,
+            rootNamespace,
+            langVersion
+        ) = (
+            getValue(parent, "TargetFramework", "TargetFrameworks"),
+            getValue(parent, "Nullable"),
+            getValue(parent, "ImplicitUsings"),
+            getValue(parent, "RootNamespace"),
+            getValue(parent, "LangVersion")
+        );
+
+        if (framework != "net6.0") {
+            warnings.Add($"Target: {framework}");
+        }
+
+        if (item.Lang == "csharp") {
+            if (nullable != "enable") {
+                warnings.Add($"Nullable: {nullable}");
+            }
+            if (implicitUsing != "enable") {
+                warnings.Add($"ImplicitUsings: {implicitUsing}");
+            }
+            if (rootNamespace != null && rootNamespace != item.GameName) {
+                warnings.Add($"RootNamespace: {rootNamespace}");
+            }
+            if (langVersion != "10") {
+                warnings.Add($"LangVersion: {langVersion}");
+            }
+        }
+
+        if (item.Lang == "vbnet") {
+            if (rootNamespace != item.GameName) {
+                warnings.Add($"RootNamespace: {rootNamespace}");
+            }
+            if (langVersion != "16.9") {
+                warnings.Add($"LangVersion: {langVersion}");
+            }
+        }
+
+        if (warnings.Any()) {
+            WriteLine(proj);
+            WriteLine(string.Join("\n", warnings));
+            WriteLine();
+        }
+    }
+}
+
+void checkExecutableProject() {
+    foreach (var item in infos) {
+        if (item.Projs.All(proj => getValue(proj,"OutputType") != "Exe")) {
+            WriteLine($"{item.LangPath}");
+        }
+    }
 }
 
 void tryBuild() {