There are two Russian vendors that offer free SharePoint tools.
RebelSearch Document Preview for SharePoint Search 2010
Install this on your WFE server(s) and you will have a preview option of the search results.
Be aware that it runs under the farm service account, and that is considered a security risk by SharePoint itself.
HarePoint Workflow Scheduler , that allows automatic execution of SharePoint workflows by schedule.
HarePoint Workflow Extensions Free Set of Activities, with a lot of String functions (finally available in SPD!).
Together with Virto Workflow Activities Kit that offers a free rollup of activities from Codeplex, these are a very useful extension of the workflow activities in SharePoint Designer.