Advanced Solutions International, Inc.
iMIS membership & fundraising software from ASI: An upgradeable software solution allowing you to manage associations, membership, non-profits, and fundraising. iMIS 15 leverages Microsoft's .NET development platform to provide a flexible and open web-based solution.
http://www.advsol.com/
Convio Nonprofit Software
Software for NonProfits - Online Fundraising, Donor Management, Donor Database, Email Marketing, Events, CMS, eCommerce. Salesforce NonProfit Blackbaud database integration. Web-based solutions. API.
http://www.convio.com