Over last few months I have been working on a new project called BountyFunding – a free / open-source bounty crowdfunding platform. It allows users to collectively sponsor most wanted features or bugfixes and gives developers additional source of income. It is tailored specifically for free / open-source projects and is licensed under AGPL itself. BountyFunding integrates with existing issue tracking system to create seamless user experience and allow its community to retain full control over the development process. See http://bountyfunding.org for more details.