A/AK:
SnODBC is a binding for ODBC API. It is distributed as starkit that may be sourced to have a snodbc package available. The starkit may also be run to see the documentation.
URL: http://www.sw4me.com/snodbc.kit
The starkit contains binaries of Ffidl and dict extensions compiled for Windows-x86 and Linux-x86.
SnODBC is mostly compatible with TclODBC, but there are some subtle differences. See the documentation for details. The main good difference is that SnODBC supports Unicode character types.
The extension is developed for Tcl 8.5; this starkit was created with some help of the sugar macro processor to translate {expand} syntax into the compatible replacement for Tcl-8.4. See using sugar for forward-compatible {expand} for a syntax macro that does this job.
Once downloaded, the starkit may be updated to the latest version with the sdx tool:
sdx update -from http://sw4me.com/cgi-bin/starsync snodbc.kit