diff --git a/README.md b/README.md
index 815fc64..eade296 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,13 @@ Usage: hx download <VERSION> [AS_NAME]
        Note: short hash VERSION is also supported for development nightlies (e.g. dd5e467)
 ```
 
+### Installing archive
+
+If you already have an archive available (a nightly from a branch other than
+`development`, for example), you can install it with:
+
+`hx install my_haxe_release.tar.gz [AS_NAME]`
+
 ## List available versions
 
 Use `hx list` to get a list of all haxe versions available throught your (local)
diff --git a/extra/hx b/extra/hx
index b71bb30..34e6dc5 100755
--- a/extra/hx
+++ b/extra/hx
@@ -1,6 +1,8 @@
 #!/bin/bash
 
 ROOT=$(dirname $(readlink -f $0))/..
+CALL_SITE=$(realpath $(pwd))
+
 BUILD_OS="linux64"
 if [[ "$OSTYPE" == "darwin"* ]]; then
 	BUILD_OS="mac"
@@ -8,4 +10,4 @@ fi
 
 VERSION="${BUILD_OS}_569e52e"
 
-HAXE_STD_PATH=$ROOT/build/$VERSION/std $ROOT/build/$VERSION/haxe --cwd $ROOT run-hx.hxml $@
+CALL_SITE=$CALL_SITE HAXE_STD_PATH=$ROOT/build/$VERSION/std $ROOT/build/$VERSION/haxe --cwd $ROOT run-hx.hxml $@
diff --git a/extra/hx.bat b/extra/hx.bat
index 3d618c1..11993d9 100644
--- a/extra/hx.bat
+++ b/extra/hx.bat
@@ -4,5 +4,6 @@ SET ROOT=%~dp0
 SET ROOT=%ROOT%..
 SET VERSION=windows64_569e52e
 SET HAXE_STD_PATH=%ROOT%\build\%VERSION%\std
+SET CALL_SITE=%CD%
 
 CALL %ROOT%\build\%VERSION%\haxe.exe --cwd %ROOT% run-hx.hxml %*
diff --git a/src/HaxeDownload.hx b/src/HaxeDownload.hx
index 69f84fe..39ee49d 100644
--- a/src/HaxeDownload.hx
+++ b/src/HaxeDownload.hx
@@ -37,6 +37,19 @@ class HaxeDownload {
 		}
 	}
 
+	public static function installLocal(file:String, ?alias:String):Void {
+		file = Path.isAbsolute(file) ? file : Path.join([Utils.getCallSite(), file]);
+		if (!FileSystem.exists(file)) throw 'Cannot find release file $file';
+
+		// Copy archive to releases/
+		final filename = Path.withoutDirectory(file);
+		final dest = Path.join([Utils.releasesDir, filename]);
+		FileSync.copyFile(file, dest);
+
+		// Install release
+		installFile(dest, filename, alias);
+	}
+
 	static function downloadLatest(?alias:String = "dev"):Void {
 		final url = Utils.getBuildUrl("latest");
 		install(url[0], url[1], alias);
@@ -58,17 +71,21 @@ class HaxeDownload {
 
 		DownloadHelper.download(url + filename, path, () -> {
 			Sys.println('Downloaded $filename');
-			final out = DownloadHelper.extract(path);
-			FileSystem.deleteFile(path);
+			installFile(path, filename, alias);
+		});
+	}
 
-			final releasePath = Path.join([FileSystem.absolutePath(Utils.releasesDir), out]);
-			if (alias == null) alias = Utils.getVersionString(releasePath);
+	static function installFile(path:String, filename:String, ?alias:String):Void {
+		final out = DownloadHelper.extract(path);
+		FileSystem.deleteFile(path);
 
-			final versionPath = Path.join([Utils.versionsDir, alias]);
-			try FileSystem.deleteFile(versionPath) catch(_) {}
-			FileSync.symlink(releasePath, versionPath);
-			Sys.println('Installed $filename as $alias');
-		});
+		final releasePath = Path.join([FileSystem.absolutePath(Utils.releasesDir), out]);
+		if (alias == null) alias = Utils.getVersionString(releasePath);
+
+		final versionPath = Path.join([Utils.versionsDir, alias]);
+		try FileSystem.deleteFile(versionPath) catch(_) {}
+		FileSync.symlink(releasePath, versionPath);
+		Sys.println('Installed $filename as $alias');
 	}
 
 	public static function displayUsage() {
diff --git a/src/HaxeManager.hx b/src/HaxeManager.hx
index 9efad0a..3601183 100644
--- a/src/HaxeManager.hx
+++ b/src/HaxeManager.hx
@@ -15,6 +15,9 @@ class HaxeManager {
 			case ["download", args]: HaxeDownload.run(args);
 			case ["select", args]: HaxeSelect.run(args);
 
+			case ["install", [file]]: HaxeDownload.installLocal(file);
+			case ["install", [file, alias]]: HaxeDownload.installLocal(file, alias);
+
 			case ["current", []]: Sys.println(Utils.getCurrent().or(""));
 			case ["current", ["--name"]]:
 				if (Sys.systemName() == "Windows")
@@ -59,6 +62,9 @@ class HaxeManager {
 			'   or: ${ORANGE}hx download latest ${UNDERLINE}[AS_NAME]${RESET}',
 			'       Install Haxe releases or nightlies',
 			'',
+			'   or: ${ORANGE}hx install ${UNDERLINE}<FILE>${UNDERLINE_OFF} ${UNDERLINE}[AS_NAME]${RESET}',
+			'       Install Haxe release archive',
+			'',
 			'   or: ${ORANGE}hx ${UNDERLINE}<VERSION>${RESET}',
 			'   or: ${ORANGE}hx select ${UNDERLINE}<VERSION>${RESET}',
 			'       Switch to installed Haxe version ${BOLD}VERSION${BOLD_OFF}',
diff --git a/src/tools/Utils.hx b/src/tools/Utils.hx
index 7931842..ef1b42f 100644
--- a/src/tools/Utils.hx
+++ b/src/tools/Utils.hx
@@ -135,6 +135,10 @@ class Utils {
 		link(dir);
 	}
 
+	public static function getCallSite():String {
+		return Sys.getEnv("CALL_SITE");
+	}
+
 	static function unlinkCurrent():Void {
 		if (FileSystem.exists(currentDir)) FileSync.unlink(currentDir);
 	}