1. Bulk WriterProvides guidance for fast ETL jobs, an IDataReader implementation for SqlBulkCopy (or the MySql or Oracle equivalents) that wraps an IEnumerable, and libraries for mapping entites to table columns.
2. EnumerationA utility class. Common uses include Java-like enumerations, dispatch table, flyweight, and drop-down list items/select options. No third-party dependencies.
3. Mopidy QsaverMopidy extension that maintains your current tracklist when the server restarts