NotifyMee is a handy service that notifies you if a downed site is up and running again. Using the service is simplified in 3 steps; 1) enter the URL of the site you want to be notified about, 2) add to which email you want the notification to be sent, and 3) click on "Thank You!". Once the site is up again, you will receive an email notifying you of the new status, and as Twitter is somehow becoming the source of information, the service will also send a tweet to let other people know about it.

That being said, if you want to know what sites are up after they disappeared from the internet, you can follow the updates on Twitter @notifymee.

AreMySitesUp is a very simple service to help you keep an eye on your sites and warn you if they go down. The way this works is by loading your site and checking the HTTP Status Code, which should be between 200 and 300, and in case it’s not AreMySitesUp will send you an email.

AreMySitesUp offers a free plan, which lets you add up to 20 sites, and a premium plan, which allows you to add 60 sites. Besides the difference in the number of sites, the interval for checking a site is noticeable between the 2 plans; for instance with the free plan a site is checked at least 25 times per day, while a premium user will have her/his sites checked every 15 minutes.

AreMySitesUp was built by Richard Felix Jr. and Chris Coyier, and you can follow the updates @AreMySitesUp on Twitter.

ServerCheck.me is an online server checking resource. Check if a website is not working or if a server is offline, lookup server IP addresses, find other domains and websites hosted on shared servers.

Have you ever wondered when you try to visit a site and it doesn’t load, if you are the only one with this problem? Look no further, Down for every one or just me is a cool service that answers this question. All you have to do is enter the website address in the search box, and voila!

Helps you to know if the site is down or it error with you only.

Ding It’s Up is a free service that alerts you via text (SMS), twitter or email when a website goes down or when it comes back up. We will never send you a text/email unless it is to inform you about a website you requested information for – you can unsubscribe at any time.