Here are a few crowdfunding sites for authors that may be helpful:
FANSNEXTDOOR
http://www.fansnextdoor.com/en
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Another crowdfunding site. FansNextdoor is a platform for all creative
professionals to promote and fund their projects together with their
fans. Create your project, its financing goal and deadline. If the
financing goal is met or exceeded by deadline, all contributions are
transferred to your PayPal account. If the financing goal is not met,
all funds are returned.
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INDIEGOGO
http://www.indiegogo.com
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IndieGoGo offers anyone with an idea — creative, cause-related,
entrepreneurial — the tools to build a campaign and raise money.
Project categories include gaming, film, design, education, mobile,
and technology. Integrates with Facebook, Twitter, and other social
media platforms. Offers a widget to showcase your campaign on your
website. Unlike many crowdfunding sites, you keep all the money you
raise, even if you don’t meet your goal. Track contributions with
the analytics tools and stay on top of fulfillment with the dashboard.
There is a 4 percent fee on the money you raise when you meet your
funding goal.
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PEERBACKERS
http://www.peerbackers.com
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Peerbackers is for business owners to raise capital from their peers —
in small increments — in exchange for tangible rewards. Create a
personal and venture profile. Share your story through social media
share buttons on your project page. Once your campaign is launched,
send updates on your progress. If you reach at least 80 percent of your
funding goal by deadline, your funding is released to you.