The best alternatives to Evedo are Loxi, Pluto, and emble (Pre-Launch). If these 3 options don't work for you, we've listed a few more alternatives below.
Loxi is an online events calendar that makes it easy to display and publish events on any website. Works with Squarespace, Wix, Weebly, WordPress, and more!
Ddays is a simple and free app for planning events together in one private space. It helps to plan all events with the following features: Polls, Todo lists, shopping lists, Simple list, Lists of contributions, Lists of expenses, Chat and Photos.
Evounce is a platform for event planners. You just plan your core event (time, date, # of guests), add elements (e.g. band, food, photographers) and hit the "Evounce" button. Local vendors will then be notified if they supply what you are looking for and can make you offers for each element. You just pick the best ones. Currently available for NYC.