diff --git a/zx b/zx
index 437f0cd..e4a7dc8 100755
--- a/zx
+++ b/zx
@@ -85,11 +85,15 @@ start(["set", "dep", PackageString]) ->
     set_dep(PackageID);
 start(["set", "version", VersionString]) ->
     set_version(VersionString);
+start(["add", "realm", RealmFile]) ->
+    add_realm(RealmFile);
 start(["drop", "dep", PackageString]) ->
     PackageID = package_id(PackageString),
     drop_dep(PackageID);
 start(["drop", "key", KeyID]) ->
     drop_key(KeyID);
+start(["drop", "realm", Realm]) ->
+    drop_realm(Realm);
 start(["verup", Level]) ->
     verup(Level);
 start(["runlocal" | Args]) ->
@@ -115,6 +119,8 @@ start(["create", "plt"]) ->
     create_plt();
 start(["create", "realm"]) ->
     create_realm();
+start(["create", "realmfile", Realm]) ->
+    create_realmfile(Realm);
 start(["create", "sysop"]) ->
     create_sysop();
 start(_) ->
@@ -538,6 +544,22 @@ update_version(Realm, Name, OldVersion, NewVersion, OldMeta) ->
 
 
 
+%%% Add realm
+
+-spec add_realm(Path) -> no_return()
+    when Path :: file:filename().
+
+add_realm(Path) ->
+    case filelib:is_regular(Path) of
+        true ->
+            ok = log(info, "I would install this now, were I implemented."),
+            halt(0);
+        false ->
+            ok = log(warning, "Realm file not found at ~ts.", [Path]),
+            halt(1)
+    end.
+
+
 %%% Drop dependency
 
 -spec drop_dep(package_id()) -> no_return().
@@ -585,6 +607,15 @@ drop_key({Realm, KeyName}) ->
     end.
 
 
+%%% Drop realm
+
+-spec drop_realm(realm()) -> no_return().
+
+drop_realm(Realm) ->
+    ok = log(info, "I would totally drop ~ts right now if I could.", [Realm]),
+    halt(0).
+
+
 
 %%% Update version
 
@@ -1695,14 +1726,14 @@ create_realm(ZompConf, Realm, ExAddress, ExPort, InPort, UserName, Email) ->
     Timestamp = calendar:now_to_universal_time(erlang:timestamp()),
     {ok, RealmPubData} = file:read_file(RealmPub),
     RealmPubRecord =
-        {{Realm, filename:basename(RealmPub)},
+        {{Realm, filename:basename(RealmPub, ".pub.der")},
          realm,
          {realm, Realm},
          crypto:hash(sha512, RealmPubData),
          Timestamp},
     {ok, PackagePubData} = file:read_file(PackagePub),
     PackagePubRecord =
-        {{Realm, filename:basename(PackagePub)},
+        {{Realm, filename:basename(PackagePub, ".pub.der")},
          package,
          {realm, Realm},
          crypto:hash(sha512, PackagePubData),
@@ -1719,7 +1750,13 @@ create_realm(ZompConf, Realm, ExAddress, ExPort, InPort, UserName, Email) ->
         "  The package and sysop keys will need to be copied to the ~~/.zomp/keys/~s/~n"
         "  directory on your personal or dev machine.~n",
     ok = io:format(Message, [Realm]),
-    UserRecord = {{UserName, Realm}, [SysopPub], Email, RealName, 1, Timestamp},
+    UserRecord =
+        {{UserName, Realm},
+         [filename:basename(SysopPub, ".pub.der")],
+         Email,
+         RealName,
+         1,
+         Timestamp},
     RealmFile = filename:join(zomp_dir(), Realm ++ ".realm"),
     RealmMeta =
         [{realm,        Realm},
@@ -1749,6 +1786,42 @@ create_realm(ZompConf, Realm, ExAddress, ExPort, InPort, UserName, Email) ->
     halt(0).
 
 
+-spec create_realmfile(realm()) -> no_return().
+
+create_realmfile(Realm) ->
+    ConfPath = filename:join(zomp_dir(), realm_file(Realm)),
+    case file:consult(ConfPath) of
+        {ok, RealmConf} ->
+            ok = log(info, "Realm found, creating realm file..."),
+            {realm_keys, RealmKeys} = lists:keyfind(realm_keys, 1, RealmConf),
+            {package_keys, PackageKeys} = lists:keyfind(package_keys, 1, RealmConf),
+            RealmKeyIDs = [element(1, K) || K <- RealmKeys],
+            PackageKeyIDs = [element(1, K) || K <- PackageKeys],
+            create_realmfile(Realm, ConfPath, RealmKeyIDs, PackageKeyIDs);
+        {error, enoent} ->
+            ok = log(warning, "There is no configured realm called ~ts.", [Realm]),
+            halt(1)
+    end.
+
+-spec create_realmfile(Realm, ConfPath, RealmKeyIDs, PackageKeyIDs) -> ok
+    when Realm         :: realm(),
+         ConfPath      :: file:filename(),
+         RealmKeyIDs   :: [key_id()],
+         PackageKeyIDs :: [key_id()].
+
+create_realmfile(Realm, ConfPath, RealmKeyIDs, PackageKeyIDs) ->
+    {ok, CWD} = file:get_cwd(),
+    ok = file:set_cwd(zomp_dir()),
+    KeyPath = fun({R, K}) -> filename:join(["key", R, K ++ ".pub.der"]) end,
+    RealmKeyPaths = lists:map(KeyPath, RealmKeyIDs),
+    PackageKeyPaths = lists:map(KeyPath, PackageKeyIDs),
+    Targets = [filename:basename(ConfPath) | RealmKeyPaths ++ PackageKeyPaths],
+    OutFile = filename:join(CWD, Realm ++ ".zrf"),
+    ok = erl_tar:create(OutFile, Targets, [compressed]),
+    ok = log(info, "Realm file written to ~ts", [OutFile]),
+    halt(0).
+
+
 -spec create_sysop() -> no_return().
 
 create_sysop() ->
@@ -1835,7 +1908,7 @@ fetch(Socket, PackageID) ->
 
 
 -spec request_zrp(Socket, PackageID) -> Result
-    when Socket :: gen_tcp:socket(),
+    when Socket    :: gen_tcp:socket(),
          PackageID :: package_id(),
          Result    :: {ok, Latest :: package_id()}
                     | {error, Reason :: timeout | term()}.
@@ -2484,8 +2557,10 @@ usage() ->
         "  zx install PackageID~n"
         "  zx set dep PackageID~n"
         "  zx set version Version~n"
+        "  zx add realm RealmFile~n"
         "  zx drop dep PackageID~n"
         "  zx drop key Realm KeyName~n"
+        "  zx drop realm Realm~n"
         "  zx verup Level~n"
         "  zx runlocal [Args]~n"
         "  zx package [Path]~n"
@@ -2493,6 +2568,7 @@ usage() ->
         "  zx create keypair~n"
         "  zx create plt~n"
         "  zx create realm~n"
+        "  zx create realmfile Realm~n"
         "  zx create sysop~n"
         "~n"
         "Where~n"
@@ -2500,6 +2576,7 @@ usage() ->
         "  Args      :: Arguments to pass to the application~n"
         "  Type      :: The project type: a standalone \"app\" or a \"lib\"~n"
         "  Version   :: Version string X, X.Y, or X.Y.Z: \"1\", \"1.2\", \"1.2.3\"~n"
+        "  RealmFile :: Path to a valid .zrf realm file~n"
         "  Realm     :: The name of a realm as a string [:a-z:]~n"
         "  KeyName   :: The prefix of a keypair to drop~n"
         "  Level     :: The version level, one of \"major\", \"minor\", or \"patch\"~n"