Charitable - A WordPress donation plugin that gives you full control over your fundraising experience.
Dudle - Dudle is an online scheduling application, which is free and open source.
Revv Online Fundraising Platform - Revv is the fundraising platform that raises organizations more money.
FullCalendar - FullCalendar is an open-source JavaScript event calendar.
Give - A WordPress plugin for easily collecting donations
Framadate - Make your polls