I manage three Web sites for three different PTA groups. All use a calendar tool and while building the latest Web site, I found Trumba. It was easier to use and had more powerful features than WebCalendar.

So I started a new account for the other two PTA Web sites and finally entered most of the events. Then I get an email saying that Trumba won’t have a free basic calendar service anymore. I have 90 days to find something else and enter the events before I lose the account. This isn’t an expense that’s worth paying for, but using free applications is a risk for this very reason — they can eventually stop being free.

Started researching other Web-based calendars that I can integrate into the Web site (a big plus with Trumba). Trumba also allowed users to select events and download them to use on their PDAs, Outlook calendars, or whatever. Found Web 2.0 List, which has a calendar category. Here’s also a list of apps from Yahoo!’s directory.

Google Calendar can be imported into a Web site. So that’s one possibility. Heard about 30Boxes, HipCal, Kiko, Hula, LoCalender and CalendarHub. I think I’m leaning toward HipCal. What are your experiences with Web-based calendars?