Mustard is an open source marketplace platform, similar to eBay. It is developed and maintained by Hamjoint CIC for Hamjoint Market, a marketplace dedicated to amateur radio and electronics.

Mustard is dependent on several components of the Laravel framework, and supports Composer for dependency management. Building a Mustard-based application requires some knowledge of PHP development.

• User accounts
• Classifieds adverts
• Email notifications
• Auctions (via mustard-auctions module)
• Purchasing system (via mustard-commerce module)
• User feedback (via mustard-feedback module)
• Paypal support (via mustard-paypal module)
• Stripe support (via mustard-stripe module)
• Messaging (via mustard-messaging module)
• Photo & video uploads (via mustard-media module)
• Helpdesk & dispute resolution (via mustard-helpdesk module)
• Full documentation

See composer.json.

composer require hamjoint/mustard

Mustard is free and gratis software licensed under the GPL3 licence. This allows you to use Mustard for commercial purposes, but any derivative works (adaptations to the code) must also be released under the same licence. Mustard is built upon the Laravel framework, which is licensed under the MIT licence.