Buggily is a simple PHP bug and idea tracker based on WordPress. It works on almost every shared hosting and is easy to install and easy to use. Also, you can migrate from Bugify with ease. Features:

PHP/WordPress based Runs on almost every shared hosting Add issues (bugs or ideas) Comment on issues Vote for ideas to support them Edit the state and priority of issues Assign a custom product to issues Subscribe to issues to get notified on changes or comments Mention and notify other users by @ing them in comments Reference other issues by typing # in the WYSIWYG editor for issues and comments