[dvektor]

Surprised no mentions of sqlite yet :) I've always associated Tcl with sqlite because of how much it is used in their test suite and how you can have a tcl interpreter as a virtual table. Very interesting and seemingly often overlooked little language.

[graemep]

I have used both TCL and Sqlite a fair bit but not both together. I have thought that TCL + in memory Sqlite would make a powerful combination for some tasks but have never actually tried it.

> have a tcl interpreter as a virtual table

Do you mean this: https://sqlite.org/src/file/src/test_tclvar.c ?

[oldlaptop]

I can't comment on virtual-table shenanigans, but I'll enthusiastically confirm that thought. Not only is an in-memory database powerful and useful for all the obvious reasons, but (I would argue) the Tcl interface to SQLite is perhaps the best relational database API in any language. (Even if it cheats a bit by being an embedded database, as with <https://sqlite.org/tclsqlite.html#function>.) It's easily as synergistic a combination as Tcl and Tk themseves, possibly more.