Simon Fell > Its just code > Soql Xplorer
The AppExchange Explorer is an invaluable tool when working with the Salesforce.com API, but I've been chaffing this last week or so that there's no OSX version, so I fixed that. It doesn't do everything the AppExEx does yet, but it has the primary bits, explore the describes results, build & run soql queries. Here's the current build of Soql Xplorer, feel free to give it a go.
Update : new build available from SoqlX's new home