- 30 Boxes
 - Online calendar and task management application, features RSS technology, social networking features, and more. - A1Calendars.com
- Manage schedules, create calendars for clients, and more.
- Address Book for Windows
- An address book database and phone dialer programme. It prints labels, address booklets, envelopes, and various name and address lists.
- American Greetings: Online Calendar Service
- Offers free reminders and alerts for birthdays, holidays, events, and appointments sent by email or cell phone.
- Brown Bear Software
- Offers web calendar software that runs on local and remotely hosted web servers.
- Calendars.net
- Offers free custom, java-based, interactive web calendar hosting for events and schedules.
- CalendarServer.com
- Free resource for web site developers to publish event schedule information in an easy to read calendar without any HTML.
- Calenz
- With changeable skins, visuals, and schemes.
- Connect Daily
![[new]](http://eur.i1.yimg.com/eur.yimg.com/i/uk/g/new2.gif) - Web calendar with resource management and many advanced features, including email reminders, Ajax support, RSS, and iCal support. - Cozi Central
- Free software for busy families that is easy to use, accessible wherever you are, and offers a shared calendar, lists, quick messages, and a dynamic photo collage.
- Creative Computer Solutions
- Offers shareware for creating monthly web page calendars.
- Efridge
- Pin notes on your virtual fridge with this free calendar system.
- Evite
- Send party or event invitations online with Evite. Create your guest list, personalise your invitation, and manage your RSVPs. Also includes party tips and eCards.
- FamilyTimePlanner
- Provides a printable online calendar that uses colour to highlight activities by participant, allowing multiple participants per calendar.
- Famundo
- Famundo is a free online service that allows families and community organisations to share and manage calendars, to-do list, and documents. Families can also share their contacts, lists, photos, blogs, and more.
- Google Calendar
- Online calendar where users can see friends' and family's schedules right next to their own, add events mentioned in Gmail conversations, and add other interesting events that they find online.
- Great Hill Corporation
- Offers calendars for the web, a unique authoring tool for creating web calendars.
- Happy Jack Software
- Provides a comprehensive online calendar suite and web calendar tools for large businesses, universities, families, groups, and individuals.
- HotDiary
- Offers online address and appointment book, with collaborative scheduling features.
- Human Calendar, The
- A calendar made of people holding date cards, looking at today. Human calendar web-badges are also available.
- Hunt Calendars
- Offers both public and private calendars, where organisations, families, individuals, and groups can view and add events.
- iExpect.com
- Personalised online calendar, reminder, and notification service for important dates and scheduled appointments.
- International Communications Enterprise
- Offers Internet Calendar Server software for Windows as well as hosted events calendar for a wide variety of needs.
- ItAnyWare
- Offers a web based calendar for personal and business use.
- Kiko
- Online calendar application with dynamic features, including click-and-drag appointments, sharing and groups, colour labels, and more.
- Let's Wiggle
- Provides tools to draw a brand new doodle everyday, and post your sketches for online voting. Also offers 365-day doodling calendar.
- localendar.com
- Features calendar hosting for web developers. Also supports personal calendars, reminders, and searches
- MyRealBox
- Email and calendaring services provided by Novell NetMail.
- RentCalendar.com
- Free web based holiday rental availability calendar. Designed to help homeowners and agents easily display the availability of their holiday properties on the web.
- Schedule Online
- Your own private calendar which lists meetings to which you're invited and tasks, to dos, and notes you've scheduled for yourself.
- SmartCal
- Allows users to store and share appointment and event information online.
- SuperCalendar
- Displays group and personal events on a single integrated colour-coded calendar.
- Ukibi
- Web-based address book.
- WebAppoint.com
- Allows users to schedule appointments online with businesses.
- WebCalendar
- PHP-based calendar application capable of managing schedules or event listings for individuals or groups.
- Yahoo! Calendar
- Yahoo! Calendar is web-based calendar to help you organise your life online, which features auto reminders, invites, and religious holidays.
  Yahoo! UK & Ireland Calendar
- Organise your life online.
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