danixland

danixland-countdown is a simple plugin that adds a widget you can load on your sidebar which will show a simple countdown to a future date that you can set. 
this plugin makes use of a simple css stylesheet that you can enable or disable at will. You can also link the countdown to whatever url you want.
<h3>ToDo list</h3>
List is actually empty, but I’m open to suggestions.
<h3>Translations</h3>
None as of now. This plugin ships with a .pot file that will allow you to create a translation in your language. 
If you want it to be added to this plugin contact me and I’ll add it and put a link to your WordPress profile here in this section.

danixland-countdown

This plugin adds a simple widget and shows a countdown to a future date.

Alex Polonski

Smart Countdown FX key features:
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years and months (along with “traditional” weeks, days, hours, minutes and seconds) can be displayed in the countdown interval.
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counter digits changes are animated and site administrator can easily switch between available <a href="http://wp.smartcalc.org/category/animation-profiles/" rel="nofollow ugc">animation profiles</a>, included with the plugin or added later.
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event <a href="http://wp.smartcalc.org/category/event-import-plugins/" rel="nofollow ugc">import plugins</a> support, no need to manually edit widget settings or shortcode for recurring or calendar events.
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Other features
Smart Countdown FX can show both countdown and count up counters, and it will switch to the “count up” mode automatically when the event time arrives. Event description can be configured individually for countdown and count up modes and can containt HTML markup allowed for a post.
Smart Countdown FX supports different layouts. Most popular layouts (sidebar, shortcode, shortcode compact, etc.) are included in the package and can be selected in the widget options or using a shortcode attribute. Custom layout presets can be easily created using existing ones as a starting point. You will find detailed instructions in the documentation.
RTL languages are natively supported in all counter layouts.
Smart Countdown FX widget is responsive. Open “Responsive” page on different handheld devices or just change your browser window width if you are on a desktop to see the feature in action.
More than one countdown can be displayed on the same page, each instance with its individual settings and configuration.
Events import plugins are supported.
<a href="http://wp.smartcalc.org/" rel="nofollow ugc">Project home page</a>
Coming soon
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More event import plugins for popular event management plugins and services.
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More animation profiles.
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Smart Countdown FX

Smart Countdown FX displays a responsive animated countdown. Supports years and months display and recurring events

danixland-countdown vs Smart Countdown FX