odbcisql is a windowing SQL processor for ODBC-connected databases, using Tclodbc
escargo 2005-04-14: I verified that this code still seems to work. I used tclodbc 2.3 on Microsoft Windows XP Pro, and ActiveState ActiveTcl 8.4.9.0 to connect to a Microsoft SQL Server 2000 installation where I work. So far, at least, everything seems to be working smoothly.
2009-05-26: still working.