Pathfork is an open-source writing tool that helps you keep track of your stories, characters, and settings. You can find it at https://pathfork.herokuapp.com.
Very much open to collaborators. There's a trello with a to-do list if you'd like to be added.
Pathfork writing tools, copyright (c) 2017 Tynan Burke This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 3. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.