A pure Swift library for creating command-line interfaces.

Note: This project is no longer maintained. It’s preserved here for historical interest only. Thanks to everyone who contributed!


Copyright (c) 2014-18 Ben Gollmer.

Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.