diff --git a/source/vibe/core/core.d b/source/vibe/core/core.d
index 486aa0b..7cce39e 100644
--- a/source/vibe/core/core.d
+++ b/source/vibe/core/core.d
@@ -560,6 +560,16 @@ public @property uint logicalProcessorCount()
 		size_t count_len = count.sizeof;
 		sysctlbyname("hw.logicalcpu", &count, &count_len, null, 0);
 		return cast(uint)count_len;
+        } else version (FreeBSD) {
+                int count;
+                size_t count_len = count.sizeof;
+                sysctlbyname("hw.logicalcpu", &count, &count_len, null, 0);
+                return cast(uint)count_len;
+        } else version (NetBSD) {
+                int count;
+                size_t count_len = count.sizeof;
+                sysctlbyname("hw.logicalcpu", &count, &count_len, null, 0);
+                return cast(uint)count_len;
 	} else version (Windows) {
 		import core.sys.windows.windows;
 		SYSTEM_INFO sysinfo;
@@ -568,6 +578,9 @@ public @property uint logicalProcessorCount()
 	} else static assert(false, "Unsupported OS!");
 }
 version (OSX) private extern(C) int sysctlbyname(const(char)* name, void* oldp, size_t* oldlen, void* newp, size_t newlen);
+version (FreeBSD) private extern(C) int sysctlbyname(const(char)* name, void* oldp, size_t* oldlen, void* newp, size_t newlen);
+version (NetBSD) private extern(C) int sysctlbyname(const(char)* name, void* oldp, size_t* oldlen, void* newp, size_t newlen);
+version (linux) static if (__VERSION__ <= 2066) private extern(C) int get_nprocs();
 
 /**
 	Suspends the execution of the calling task to let other tasks and events be