diff --git a/platform/platform.cpp b/platform/platform.cpp
index efb9a72..c94fc20 100644
--- a/platform/platform.cpp
+++ b/platform/platform.cpp
@@ -14,12 +14,6 @@
 #include <dirent.h>
 #include <sys/stat.h>
 
-#if defined(GEOCORE_OS_MAC)
-#include <sys/mount.h>
-#else
-#include <sys/vfs.h>
-#endif
-
 #include <cerrno>
 
 #include <boost/filesystem.hpp>
@@ -399,43 +393,6 @@ bool Platform::GetFileSizeByFullPath(string const & filePath, uint64_t & size)
   else return false;
 }
 
-Platform::TStorageStatus Platform::GetWritableStorageStatus(uint64_t neededSize) const
-{
-  struct statfs st;
-  int const ret = statfs(m_writableDir.c_str(), &st);
-
-  LOG(LDEBUG, ("statfs return =", ret,
-      "; block size =", st.f_bsize,
-      "; blocks available =", st.f_bavail));
-
-  if (ret != 0)
-  {
-    LOG(LERROR, ("Path:", m_writableDir, "statfs error:", ErrnoToError()));
-    return STORAGE_DISCONNECTED;
-  }
-
-  /// @todo May be add additional storage space.
-  if (st.f_bsize * st.f_bavail < neededSize)
-    return NOT_ENOUGH_SPACE;
-
-  return STORAGE_OK;
-}
-
-uint64_t Platform::GetWritableStorageSpace() const
-{
-  struct statfs st;
-  int const ret = statfs(m_writableDir.c_str(), &st);
-
-  LOG(LDEBUG, ("statfs return =", ret,
-      "; block size =", st.f_bsize,
-      "; blocks available =", st.f_bavail));
-
-  if (ret != 0)
-    LOG(LERROR, ("Path:", m_writableDir, "statfs error:", ErrnoToError()));
-
-  return (ret != 0) ? 0 : st.f_bsize * st.f_bavail;
-}
-
 namespace
 {
 // Web service ip to check internet connection. Now it's a mail.ru ip.
diff --git a/platform/platform.hpp b/platform/platform.hpp
index 5a5d80d..62802e5 100644
--- a/platform/platform.hpp
+++ b/platform/platform.hpp
@@ -220,19 +220,12 @@ public:
     STORAGE_DISCONNECTED,
     NOT_ENOUGH_SPACE
   };
-  TStorageStatus GetWritableStorageStatus(uint64_t neededSize) const;
-  uint64_t GetWritableStorageSpace() const;
 
   // Please note, that number of active cores can vary at runtime.
   // DO NOT assume for the same return value between calls.
   unsigned CpuCores() const;
 
 
-
-  std::string UniqueClientId() const;
-
-
-
   /// \brief Placing an executable object |task| on a queue of |thread|. Then the object will be
   /// executed on |thread|.
   /// \note |task| cannot be moved in case of |Thread::Gui|. This way unique_ptr cannot be used
diff --git a/platform/platform_tests/platform_test.cpp b/platform/platform_tests/platform_test.cpp
index d6468cc..73aa8db 100644
--- a/platform/platform_tests/platform_test.cpp
+++ b/platform/platform_tests/platform_test.cpp
@@ -208,12 +208,6 @@ UNIT_TEST(CpuCores)
   TEST_LESS_OR_EQUAL(coresNum, 128, ());
 }
 
-UNIT_TEST(GetWritableStorageStatus)
-{
-  TEST_EQUAL(Platform::STORAGE_OK, GetPlatform().GetWritableStorageStatus(100000), ());
-  TEST_EQUAL(Platform::NOT_ENOUGH_SPACE, GetPlatform().GetWritableStorageStatus(uint64_t(-1)), ());
-}
-
 UNIT_TEST(RmDirRecursively)
 {
   std::string const testDir1 = base::JoinPath(GetPlatform().WritableDir(), "test_dir1");
diff --git a/platform/preferred_languages.cpp b/platform/preferred_languages.cpp
index 20a353e..4599283 100644
--- a/platform/preferred_languages.cpp
+++ b/platform/preferred_languages.cpp
@@ -3,15 +3,7 @@
 #include "base/logging.hpp"
 #include "base/macros.hpp"
 
-#include "platform/target_os.hpp"
-
-#if defined(GEOCORE_OS_MAC)
-  #include <CoreFoundation/CFLocale.h>
-  #include <CoreFoundation/CFString.h>
-#elif defined(GEOCORE_OS_LINUX)
-  #include <cstdlib>
-#endif
-
+#include <cstdlib>
 #include <vector>
 #include <string>
 
@@ -22,7 +14,6 @@ namespace languages
 
 void GetSystemPreferred(vector<string> & languages)
 {
-#if defined(GEOCORE_OS_MAC) || defined(GEOCORE_OS_LINUX)
   // check environment variables
   char const * p = getenv("LANGUAGE");
   if (p && strlen(p))  // LANGUAGE can contain several values divided by ':'
@@ -38,22 +29,6 @@ void GetSystemPreferred(vector<string> & languages)
     languages.push_back(p);
   else if ((p = getenv("LANG")))
     languages.push_back(p);
-#if defined(GEOCORE_OS_MAC)
-  else
-  {
-    // Mac and iOS implementation
-    CFArrayRef langs = CFLocaleCopyPreferredLanguages();
-    char buf[30];
-    for (CFIndex i = 0; i < CFArrayGetCount(langs); ++i)
-    {
-      CFStringRef strRef = (CFStringRef)CFArrayGetValueAtIndex(langs, i);
-      CFStringGetCString(strRef, buf, 30, kCFStringEncodingUTF8);
-      languages.push_back(buf);
-    }
-    CFRelease(langs);
-  }
-#endif // defined(GEOCORE_OS_MAC)
-#endif // defined(GEOCORE_OS_MAC) || defined(GEOCORE_OS_LINUX)
 }
 
 string GetPreferred()