Zoho DB & Reports
Zoho DB & Reports offers a free and easy way to create your own database online. You can create a database from scratch or by importing data from an existing spreadsheet. The databases run rather quickly, which was a pleasant surprise. There doesn’t appear to be any limits in place for the number of databases you can create.
Zoho Creator
Zoho Creator is not really a database service but a Web application builder. What's strange is that it's eerily similar to their own Zoho DB in that you can create databases as well. Zoho Creator does offer a great deal more options than Zoho DB. It offers an excellent interface builder for creating customized forms and the ability to build database applications for the mobile platform.
They have their own API for those interested in building more complex databases. Their scripting language is called Deluge. Zoho has stated that there are plans to one day unite Zoho DB and Creator into one product which makes perfect sense.
DabbleDB
DabbleDB is similar to Zoho DB except that it doesn't offer a free account. There's only a 30-day trial, otherwise you'll need a premium account. After kicking the tires with the trial version you'll notice that it isn't as easy to use as Zoho's other database solutions. The interface doesn't present the data as well as Zoho DB's useful Tabbed interface. The performance was brisk with the test database, which included a few hundred records. There doesn't seem to be enough options or features to justify the expense when compared to the free offerings available today.
Blist
Strata
QuickBase
QuickBase is from Intuit, the people behind Quicken and QuickBooks. They were one of the first online database services. Needless to say, their service is robust with features and the performance very strong. Just like DabbleDB there's no free account, just a trial version. The least expensive account that you can get is $15 per month for 5 users.
Conclusion