diff --git a/Src/IACore/inc/IACore/File.hpp b/Src/IACore/inc/IACore/File.hpp
index 256759f..4625bf6 100644
--- a/Src/IACore/inc/IACore/File.hpp
+++ b/Src/IACore/inc/IACore/File.hpp
@@ -250,7 +250,7 @@ namespace IACore
             size_ = static_cast<size_t>(size.QuadPart);
 
             // 3. Create Mapping Object
-            hMapping_ = ::CreateFileMappingA(hFile_, nullptr, PAGE_READONLY, 0, 0, nullptr);
+            hMapping_ = ::CreateFileMappingA(hFile_, nullptr, PAGE_READWRITE, 0, 0, nullptr);
             if (!hMapping_)
             {
                 Close();
@@ -258,7 +258,7 @@ namespace IACore
             }
 
             // 4. Map View
-            data_ = ::MapViewOfFile(hMapping_, FILE_MAP_READ, 0, 0, 0);
+            data_ = ::MapViewOfFile(hMapping_, FILE_MAP_ALL_ACCESS, 0, 0, 0);
             if (!data_)
             {
                 Close();
@@ -267,7 +267,7 @@ namespace IACore
 
 #else // LINUX / POSIX
       // 1. Open File
-            fd_ = ::open(filepath.c_str(), O_RDONLY);
+            fd_ = ::open(filepath.c_str(), O_RDWR);
             if (fd_ == -1)
                 return false;
 
@@ -283,7 +283,7 @@ namespace IACore
             // 3. mmap
             // PROT_READ: Read only
             // MAP_PRIVATE: Copy-on-write (safe if you accidentally modify, though we return const)
-            data_ = ::mmap(nullptr, size_, PROT_READ, MAP_PRIVATE, fd_, 0);
+            data_ = ::mmap(nullptr, size_, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd_, 0);
             if (data_ == MAP_FAILED)
             {
                 data_ = nullptr;
diff --git a/Src/IACore/inc/IACore/PCH.hpp b/Src/IACore/inc/IACore/PCH.hpp
index 9375ebd..af67102 100644
--- a/Src/IACore/inc/IACore/PCH.hpp
+++ b/Src/IACore/inc/IACore/PCH.hpp
@@ -26,6 +26,8 @@
 #    include <bit>
 #    include <new>
 #    include <span>
+#    include <atomic>
+#    include <thread>
 #    include <limits>
 #    include <cstring>
 #    include <cstddef>
@@ -534,6 +536,9 @@ using StringStream = std::stringstream;
 using HRClock = std::chrono::high_resolution_clock;
 using HRTimePoint = std::chrono::time_point<HRClock>;
 
+using Mutex = std::mutex;
+using LockGuard = std::lock_guard<Mutex>;
+
 template<typename... Args> using FormatterString = std::format_string<Args...>;
 
 #endif
diff --git a/Src/IACore/inc/IACore/Process.hpp b/Src/IACore/inc/IACore/Process.hpp
index 299ab63..a03b0e5 100644
--- a/Src/IACore/inc/IACore/Process.hpp
+++ b/Src/IACore/inc/IACore/Process.hpp
@@ -40,6 +40,35 @@ namespace IACore
 #endif
         }
 
+        // ---------------------------------------------------------------------
+        // Async Execution
+        // ---------------------------------------------------------------------
+
+        // Returns a jthread.
+        // - Store it if you want to wait for it later (join).
+        // - If you destroy the returned jthread immediately, it will BLOCK (join) by design.
+        // - If you want "fire and forget", call .detach() on the returned thread.
+        STATIC std::jthread RunAsync(String cmd, String args, Function<VOID(StringView)> onOutputLine,
+                                     Function<VOID(tl::expected<INT32, String>)> onComplete)
+        {
+            // We capture arguments by VALUE (=) to ensure the thread owns its own copies of the strings.
+            return std::jthread([=, cmd = std::move(cmd), args = std::move(args)]() mutable {
+                tl::expected<INT32, String> result = tl::make_unexpected("Not started");
+
+#if IA_PLATFORM_WINDOWS
+                result = RunWindows(cmd, args, onOutputLine);
+#else
+                result = RunPosix(cmd, args, onOutputLine);
+#endif
+
+                // Report final result to the callback
+                if (onComplete)
+                {
+                    onComplete(std::move(result));
+                }
+            });
+        }
+
       private:
         // ---------------------------------------------------------------------
         // Output Buffering Helper
diff --git a/Src/IACore/inc/IACore/SocketOps.hpp b/Src/IACore/inc/IACore/SocketOps.hpp
new file mode 100644
index 0000000..0db9df3
--- /dev/null
+++ b/Src/IACore/inc/IACore/SocketOps.hpp
@@ -0,0 +1,96 @@
+// IACore-OSS; The Core Library for All IA Open Source Projects
+// Copyright (C) 2025 IAS (ias@iasoft.dev)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include <IACore/PCH.hpp>
+
+#if IA_PLATFORM_WINDOWS
+
+#    include <winsock2.h>
+#    pragma comment(lib, "ws2_32.lib")
+#    define CLOSE_SOCKET(s) closesocket(s)
+#    define IS_VALID_SOCKET(s) (s != INVALID_SOCKET)
+using SocketHandle = SOCKET;
+
+#elif IA_PLATFORM_UNIX
+
+#    include <sys/types.h>
+#    include <sys/socket.h>
+#    include <netinet/in.h>
+#    define CLOSE_SOCKET(s) close(s)
+#    define IS_VALID_SOCKET(s) (s >= 0)
+#    define INVALID_SOCKET -1
+using SocketHandle = int;
+
+#else
+
+#    warning "IACore SocketOps is not supported on this platform."
+
+#endif
+
+namespace IACore
+{
+    class SocketOps
+    {
+      public:
+        STATIC VOID Initialize()
+        {
+#if IA_PLATFORM_WINDOWS
+            WSADATA wsaData;
+            WSAStartup(MAKEWORD(2, 2), &wsaData);
+#endif
+        }
+
+        STATIC VOID Terminate()
+        {
+#if IA_PLATFORM_WINDOWS
+            WSACleanup();
+#endif
+        }
+
+        STATIC BOOL IsPortAvailableTCP(IN UINT16 port)
+        {
+            return IsPortAvailable(port, SOCK_STREAM);
+        }
+
+        STATIC BOOL IsPortAvailableUDP(IN UINT16 port)
+        {
+            return IsPortAvailable(port, SOCK_DGRAM);
+        }
+
+      private:
+        STATIC BOOL IsPortAvailable(IN UINT16 port, IN INT32 type)
+        {
+            SocketHandle sock = socket(AF_INET, type, IPPROTO_UDP);
+            if (!IS_VALID_SOCKET(sock))
+                return false;
+
+            sockaddr_in addr{};
+            addr.sin_family = AF_INET;
+            addr.sin_port = htons(port);
+            addr.sin_addr.s_addr = htonl(INADDR_ANY);
+
+            bool isFree = false;
+            if (bind(sock, (struct sockaddr *) &addr, sizeof(addr)) == 0)
+                isFree = true;
+
+            CLOSE_SOCKET(sock);
+
+            return isFree;
+        }
+    };
+} // namespace IACore
\ No newline at end of file