sierramike

This widget allows you to display a JQuery responsive countdown timer on your website. You can use it as a widget or include it wherever shortcodes are supported.
It comes out of the box with french and german translations.
The widget contains media queries in its css stylesheet. You can edit it to suit your needs.
This widget also supports shortcodes!
Just add a [smcountdown timerdate=’xxx’] shortcode to any of you posts and you’ll get a responsive countdown timer! 
The shortcode supports one parameter: timerdate. 
* timerdate indicates the target date until which the timer counts down
Shortcode usage samples : 
[smcountdown timerdate=’2015/12/31 23:59:59′] 
Displays a countdown timer until Decembre 31th of 2015, 23h59m59s.

SM CountDown Widget

Displays a responsive JQuery countdown timer.

AWEOS GmbH

<h3>AWEOS WP Lock: Put your site in maintenance mode if needed</h3>
Is your website still under development? Have you broken anything on your webpage? WP Lock has you covered, use our simple admin bar widget to lock your site when needed.
We let you define a specific timespan to unlock and lock your site again, this can be useful if you want to show your work to a client, co-worker or friend.
After installation, you can use the “WP Lock” settings section inside your admin bar to lock or unlock your site. We indicate that your site is either locked or public by using a green or red color which makes it clear to the developer and site admins if “WP Lock” is activated at this moment.
If the plugin is enabled, you can only visit your website if you are logged in as an Administrator or Editor. Other people (‘guests’) will see a white page with just a short but customizable text notice rather than the website itself.
You can choose between 4 plugin states:
<ol>
<li>Disable permanently 
The plugin is disabled forever – show the website for everyone (you can also deactivate the plugin as a whole to archive the same behavior)</li>
<li>Enable permanently 
The plugin is enabled forever, for now. Use this setting to hide the website from ‘guests’, a green section of the admin bar will indicate that your site is offline.</li>
<li>Disable for [TIME] 
Configure a manual timeframe in X minutes, hours, days or weeks where your site will be open for the specific duration. The site will jump back to a locked state after the defined time.</li>
<li>Enable for 
Configure a manual timeframe in X minutes, hours, days or weeks where your site will be locked for the specific duration. The site will jump back to an open state after the defined time.</li>
</ol>
This plugin was developed by the advertising agency AWEOS.
Inprint (German): <a href="https://aweos.de/impressum/" rel="nofollow ugc">https://aweos.de/impressum/</a>
<blockquote>
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
</blockquote>

AWEOS WP Lock

Lock your Website from external access if your website is under construction. Only admins can see the website. You can also define a timespan.

SM CountDown Widget vs AWEOS WP Lock