Luckily, there’s a variety of free online alarm clocks available for almost everyone, and we rounded up seven of the best. As long as you have a computer or a mobile device and an internet connection, you can start using any of these customizable online alarm clocks right away. Use the drop-down options beneath the time to set your alarm. Select the gear icon at the bottom of the screen to configure your general settings, choose the type of clock you want, choose the color of the numbers, select or upload a background image, and set an alarm sound. Choose from one of the four built-in sounds, one of the built-in radio stations, or a YouTube video of your choice. As a bonus, you can select the frame icon in the lower-right corner to enter full-screen mode. The clock also looks gorgeous in a mobile web browser. The only major drawbacks are that you can’t set multiple alarms, and there’s no snooze button. The clock displays large, blue numbers over a white background with a range of settings you can customize beneath it. You’re able to check other time zones; give your clock a title; and change the numbers’ color, size, and font. To set up multiple alarms, select the Alarms link beneath the clock. Another great feature of TimeMe is the ability to save your clock settings and grab a link to it for easy access later. The only feature this alarm clock lacks is the ability to customize the background beyond black or white. Select the links beneath the time to choose different clock versions and customize your settings. For example, choose a sound for your alarm, set a timer, start a countdown, or choose a background. Then, use the links at the top of the screen to customize the size of the clock and background color. Online Clock has a lot of great options if you’re looking for something basic. However, its navigation and settings can be a little confusing with all the browser tabs opening any time you make a selection. You also can’t set multiple alarms or hit a snooze button, so if those features are important to you, you might need to look elsewhere. Although it works perfectly fine, it’s not exactly the most visually appealing due to the large ads that cover up nearly half the screen—nor does it have very many features to customize beyond the most basic alarm settings. And like Onlive Clock and Online Clock, you can only set one alarm at a time. Set your alarm, and the app will use a 30-minute window around that time to find your lightest sleep state and wake you up. An intelligent snooze feature gives you the option to snooze through your wake-up window. The snooze duration becomes shorter as you’re slowly woken up at your desired alarm time. To snooze, double-tap your device. There’s nothing really web-based about this alarm clock except that you need to have internet access to download it. Download For: To set an alarm, tap the clock icon in the screen’s upper-right corner, then tap Add Alarm. You’ll be shown several customizable settings for your alarm, including Repeat, Music, Notification Sound, Volume, and Label. You can also take advantage of the Music Sleep Timer in the Settings tab, which allows you to fall asleep to your favorite music. This app comes with a range of other features that makes it unique, like Twitter integration, local weather information, and customizable clock appearances with unlimited foreground colors. The only downside is the ads. You can, however, pay for an upgrade to remove them. Download For: There are several wake-up options. For example, your alarm can slowly increase in volume for a gentle wake-up, play a favorite song from your music library, or force you to solve math problems before you snooze. To prevent yourself from excessive snoozing, set a maximum number of snoozes and set the snooze duration to decrease each time you tap it. As a bonus, this app doubles ​as a sleep tracker. It can analyze your sleep behavior, identify trends, filter data by weekday, and give you a sleep score based on the data obtained. Like Alarm Clock HD for iOS, Alarm Clock Xtreme’s free version has ads, but the premium, ad-free version is available for a paid upgrade. Download For:

When you’re traveling: Chances are you’re not going to bring your big, bulky bedside alarm clock on the road with you. Since you’ll probably bring your computer or mobile device anyway, having it double as an alarm clock is convenient.When you need a backup alarm: It stinks when your alarm doesn’t go off for whatever reason, or you’ve just become so accustomed to hitting snooze that it hardly phases you anymore. With a backup alarm, you get another shot at waking up on time.When you want customizable features: Perhaps you’re looking for pleasant nature sounds, or you want a weather report as soon as you wake up. When the traditional alarm doesn’t offer enough features, it’s time to use an online alarm clock to improve your wake-up experience.