Here’s how this add-on works:

1. You decide the time and the date when you are available to call a meeting. (The add-on checks for overlap with your Google Calendar).
2. You create a meeting and invite people.
3. Invitees reply with their availability times.
4. Meeting is scheduled by you keeping in mind availability of the invitees.

The add-on creates a small widget inside your Gmail where you can take a look at the upcoming meetings. A cool thing about this add-on is that it integrates with your Google Calendar too. So you don’t have to re-check with your own calendar to see if the meeting conflicts with some other appointment.

Check out Meeting Scheduler for Gmail @ http://addons.mozilla.org/en-US/firefox/addon/14971 (by Abhijeet from Jeet Blog)

• New: Follow MakeUseOf on Twitter. Recommended!
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• PermaTime: Easily Schedule Meeting Time Across Time Zones
• Meet-O-Matic : Meeting Scheduling at its Simplest
• Diarised: Fast Online Meeting Scheduler
• Zuplo: Cool Stationary Backgrounds for Your Emails
• Zamabook: Web Based Appointment Scheduling Service

Features:

• Easily create class schedules online.
• Print generated schedules.
• Create as many schedules as you like.
• Free and doesn’t require email or registration.

Check out Schedulegenerator @ www.sealandserpent.org/schedgen/schedulegenerator (by Alex Ainsberg)

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• RotaBoard: Online Schedule Maker
• PrintFreeGraphPaper: Generate and Print Graph Paper
• MyAwardMaker: Free Custom Certificate Templates
• GraphPaper: Make Your Own Graph Paper Online
• Wowbrary: Get Alerts on New Book Arrivals From Your Library

When you click on a movie on the right, it pops up the corresponding IMDb page and a map of that movie theater.

Features:

• Quickly find movie show times in local theaters.
• Currently for United States only.
• Simple, easy to use and doesn’t require sign up.
• Various filtering options based on movie name, rating, theater name and showtimes.
• Get additional details about the movie by clicking on its name.
• Similar tools: MovieShowTimeMap and DoubleFeatureFinder.

Check out Showtimefu @ www.showtimefu.com (by Abhijeet from Jeet Blog)

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• DoubleFeatureFinder: Browse Local Movie Theater Showtimes
• WhichDateWorks: Online Event Scheduler
• WhatTheMovie: Addictive Movie Quiz Site
• WatchItToo: View Photos & Watch Videos Together
• Watch-Movies: Watch Full-Length Movies Online

Features:

• Browse movie showtimes in local movie theaters (US only).
• Pick a local theater and see its full movie schedule sorted by showtime.
• Pick a movie and see a list of local theaters where you can watch it.
• Similar site: MovieShowTimeMap.

Check out Double Feature Finder @ www.doublefeaturefinder.com

• New: Follow MakeUseOf on Twitter. Recommended!
• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• ShowtimeFu: Find Movie Times At Local Theaters
• WhichDateWorks: Online Event Scheduler
• WhatTheMovie: Addictive Movie Quiz Site
• WatchItToo: View Photos & Watch Videos Together
• Watch-Movies: Watch Full-Length Movies Online

Tungle.me, which is integrated with Tungle Accelarate, lets you personalize and publish your calendar online and add it to your social networking profiles. Its click-to-meet technology allows visitors to view your Tungle.me link and schedule a meeting without the need to sign up.

See how it works in the demo video below:

Features:

• Share and sync calendar across different platforms easily.
• Add attendees without the need for them to sign up.
• Publish calendar and let people add themselves to your schedule using Tungle.me
• Sync it with your existing calendars like Outlook, iCal, Google Calendar… etc.
• Works on the iPhone too.
• Similar web tool: Calgoo Connect & Hub.

Check out Tungle @ www.tungle.com (by Abhijeet from Jeet Blog)

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• GooSync: Sync Google Calendar with Mobile, Blackberry or iPhone
• GoogleSync: Sync your Mobile Calendar with Google Calendar
• FuseCal: Stay up to date with any Event Calendar on the Web
• Anywr : Contact Manager + Calendar
• WorkTrek: Productivity Tracking Tool

You can create multiple permatimes and share them with others without registration.

Features:

• Announce an event in your local time and share it with participants across different timezones.
• Share the event with others by forwarding the URL.
• Everyone from a different timezone will see the event’s time/date in their local time.
• Browse future and past permatimes.
• No registration and free.
• Similar tool: EasyTZ.

Check out PermaTime @ www.permatime.com

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• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• EasyTZ: Conference Call Scheduler with Time Zone Conversion
• Voxli: Group Voice Chatting Made Really Simple
• Talkster : Free Long Distance Calling
• Switchboard : Browser-to-Browser Internet Phone
• PalBee : Free Online Video Conference and Chat

Once you have created an account the control panel will assist you in creating and assigning things. You can start new projects, add your employees, set roles and drag and drop items onto your calendar.

Onyaka automatically generates rosters for staff members based on their skills and availability. Moreover, it is all online which means that you can access it from anywhere at anytime.

Features:

• Online staff scheduling tool.
• Simple drag and drop interface.
• Automatically generates rosters for staff members based on skills and availability.
• Free, nothing to install or download.
• For additonal details and demo check out their screencasts.
• Similar websites: FindMyShift and RotaBoard.

Check out Onyaka @ apps.onyaka.com (via Lifehacker) [by Srikanth from FirefoxNinjas]

• New: Follow MakeUseOf on Twitter. Recommended!
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• WhosOff : The Online Staff Holiday Planner
• WhichDateWorks: Online Event Scheduler
• RotaBoard: Online Schedule Maker
• Meet-O-Matic : Meeting Scheduling at its Simplest
• FindMyShift: Web based Staff Scheduling Tool

How it works:

1. Enter participants and chores.
2. Specify how hard each chore is and how often it should be done.
3. ChoreBuster automatically generates a fair schedule of chores.
4. Get reminders in your email weekly or daily.

Sign up to create your own schedule or try it online using the demo account.

Features:

• Online chore organizer.
• Automatically allocates daily chores equally among people, based on the difficulty of each task.
• Add as many chores and people into a schedule as you like.
• Send daily reminders and weekly schedules.
• Assign awards to certain difficult chores.
• Free, sign up online or try it using the demo account.

Check out ChoreBuster @ www.chorebuster.net

• New: Follow MakeUseOf on Twitter. Recommended!
• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• WhichDateWorks: Online Event Scheduler
• Soshiku: Awesome Tool To Keep Track Of Your Schoolwork
• Solvr: Group Problem Solving Tool
• Shvoong: Online Homework Manager
• ScheduleGenerator: Class Schedule Maker

The application offers free and paid accounts. Free account includes all features with one week forward and backward scheduling limit.

See FindMyShift in action in the video below:

Features:

• Web based staff scheduler.
• Simple on-screen editing.
• Drag and drop entries with your mouse.
• Text message your staff within the schedule.
• Nothing to install or download.
• Track your day-to-day costs with built-in reports.
• Free account includes all  features with one week forward and backward scheduling limit.
• Try demo account here.
• Similar websites: WhosOff and RotaBoard.

Check out FindMyShift @ www.findmyshift.com (by Srikanth AD from Techonaut)

• New: Follow MakeUseOf on Twitter. Recommended!
• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• RotaBoard: Online Schedule Maker
• WhosOff : The Online Staff Holiday Planner
• Onyaka: Free Online Staff Scheduler
• Meet-O-Matic : Meeting Scheduling at its Simplest
• Zapproved: Web based Decision Making Tool

The site is free and offers optional regsitration. While anyone can use it to pick the event dates, registered users can additionaly save events, use contacts from previous events and keep track of even invitations from others.

Planning an event works in 4 steps:

1. Name an event (ex. going to a movie)
2. Enter the name and email of the event organizer and add people involved by entering their emails (manually or import from your address book).
3. Select the dates that work best for you. You may also narrow down available dates to a specific time period (optional). Ex: April 10 – 17.
4. Preview invitations before sending them out. Fially, when you are done click on the “Send invitation” link to notify the selected people. (Users may always go back and edit the event details).

Everyone involved can keep track of the event date selections and get notified by email when someone responds. At the end, the organizer picks the best date and sends everyone an email.

Features:

• Free and easy event scheduling online.
• No sign up required, start planning an event immediately.
• Plan as many events as you like.
• Similar websites: Diarised and Meet-O-Matic.

Check out WhichDateWorks @ www.whichdateworks.com

• New: Follow MakeUseOf on Twitter. Recommended!
• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• WhichWeekend : Weekend Planner
• Onyaka: Free Online Staff Scheduler
• ChoreBuster: Organizing Chores Online Made Simple
• WhosOff : The Online Staff Holiday Planner
• WhoAreIn: Easily Organize Meetings Online

Features:

• Schedule meetings online and find out the best meeting time.
• Schedule as many meetings and time slots (for each meeting) as you like.
• Simple to use and clutter-free interface
• No registration or sign-up is required

Also check out other similar web applications: WhenIsGood, Meet-O-Matic, Doodle (my personal favorite) and TimeBridge.

Here is a sample screenshot from the schedule page. Quick, easy and straightforward.

Check out Diarised @ www.diarised.com

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• PermaTime: Easily Schedule Meeting Time Across Time Zones
• Meeting Scheduler for Gmail (Firefox only)
• Meet-O-Matic : Meeting Scheduling at its Simplest
• Zamabook: Web Based Appointment Scheduling Service
• WoldTimeEngine: Find out What Time is it in XXXXX Right Now

Features:

• Easy to use scheduler letting you setup single or recurrent calls.
• Currently works only in the US (more countries will be added soon).
• Get wake up calls, reminders, group broadcast calls, weather forecasts, severe weather alerts, stock alerts to your regular phone line.

Check out TelePixie @ www.telepixie.com

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• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• YourLi.st : Get Event Reminders by eMail
• Wakerupper: Wake-up Calls and Telephone Reminders
• Shvoong: Online Homework Manager
• RSSBirthday: Get Birthday Notifications On Your Feedreader
• Resnooze: Sends Regular Reminders to your Email

Here is how it works: First you indicate the location of each participant on the map. Once all locations are pinned, go to the small calendar on the sidebar and pick a meeting date and time for your own time zone. Next you should see a list showing the corresponding local times for each participant. If everything seems correct then click on the ‘Email’ button on the sidebar.

Features:

• Schedule conference calls across multiple time zones.
• Daylight savings times are included so you won’t be caught off guard.
• Easily set participant’s locations on the map.
• If you can’t find a location you need, use the “City Search” feature.
• Zoom into the map for better accuracy.
• No sign up or registration required.

Go to EasyTZ @ www.easytz.com

• New: Follow MakeUseOf on Twitter. Recommended!
• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• PermaTime: Easily Schedule Meeting Time Across Time Zones
• Voxli: Group Voice Chatting Made Really Simple
• Talkster : Free Long Distance Calling
• Switchboard : Browser-to-Browser Internet Phone
• Yugma: Make Conference Calls & Collaborate With Others Online

Features:

• Call your phone number whenever you need for free.
• Set how many times you want PhoneMyPhone to call you.
• Optionally schedule the phone call for later.
• The service is currently available only to people from United States.

Visit PhoneMyPhone @ www.phonemyphone.com

• New: Follow MakeUseOf on Twitter. Recommended!
• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• Wakerupper: Wake-up Calls and Telephone Reminders
• Timer : Set Reminder Alerts using Twitter
• TelePixie : Wake Up, Alert and Reminder Calls
• Shvoong: Online Homework Manager
• Zlert : Get Alerts From Amazon

You will be able to monitor responses as they arrive on a custom monitoring page with a table (see below).

Once everyone has replied, Meet-O-Matic will lookup the best dates and list them, from best to worst.

Additional Features

• Plan and schedule as many meetings as you want.
• No restrictions on the number of attendees.
• Custom page to monitor responses as they happen.
• VIP person : When selected Meet-O-Matic makes sure that meeting takes place on one of the dates selected by a VIP user.
• Attendees are able to come back and edit their choices later.
• Receive email when every one is finished
• No registration required.

Check out Meet-O-Matic @ www.meetomatic.com

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• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• Zapproved: Web based Decision Making Tool
• Zamabook: Web Based Appointment Scheduling Service
• WhoAreIn: Easily Organize Meetings Online
• TimeBridge : Automated Meeting Scheduler
• TelePixie : Wake Up, Alert and Reminder Calls

Features

• Manage homework notes online.
• Store homework, class summaries and exams for as long as you need.
• Create course schedules, timetables and setup exam reminder alerts.
• Invite and exchange homework notes with friends and classmates.
• Browse through homeworks shared by other Shvoong members.
• Multi-lingual: Arabic, Bulgarian, Czech, Danish, Dutch, Farsi, Finnish, and French.

Swoong Homework Introduction Video

Check out Shvoong HomeWork @ [homework.shvoong.com]

• New: Follow MakeUseOf on Twitter. Recommended!
• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• Wakerupper: Wake-up Calls and Telephone Reminders
• TelePixie : Wake Up, Alert and Reminder Calls
• ScheduleGenerator: Class Schedule Maker
• RotaBoard: Online Schedule Maker
• ReturnMyPants: Easily Track Borrowed & Lent Items

Wakerupper Features

• Schedule free wake-up phone calls (from PC or mobile) to any phone.
• Add optional messages to your reminders (up to 140-character).
• Currently supported regions: USA and Canada.
• Coming Soon: Schedule phone reminders by dialing 1-888-77-WAKER.
• Note: Wakerupper is a free service, however depending on your carrier plan standard phone charges may apply.

Visit Wakerupper [www.wakerupper.com]

• New: Follow MakeUseOf on Twitter. Recommended!
• MakeUseOf 'Geeky Fun' - Hillarious Geeky Pics and Videos from different parts of web.

• TelePixie : Wake Up, Alert and Reminder Calls
• Shvoong: Online Homework Manager
• PhoneMyPhone : Schedule Calls to your Phone
• Zlert : Get Alerts From Amazon
• ZingSale: Get Email Alerts When Products Go On Sale

RotaBoard.com: “Organising your employees working schedules shouldn’t be a burden. That’s why we’ve created Rotaboard”

• Create, manage, print and track personal and employee working schedules.
• Send notifications and share schedules with staff members.
• Add and Manage as many employees as you need.
• Intuitive drag and drop user interface.
• Create standard, recurring or custom (Holidays, Training, Overtime etc) employee shift types.
• View your staff’s weekly payable hours at a glance
• Still no clue? Check out bunch of full size RotaBoard screenshots here.

Check out RotaBoard @ www.rotaboard.com

• New: Follow MakeUseOf on Twitter. Recommended!
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• ScheduleGenerator: Class Schedule Maker
• MBAvid: Free MBA Video Lectures
• FindMyShift: Web based Staff Scheduling Tool
• Wowbrary: Get Alerts on New Book Arrivals From Your Library
• WiZiQ : Virtual Classroom