Is there a web app that can create ASCII-art tables like this one?:

```

------------------------------------------------
|           | ColA            | ColB           |
------------------------------------------------
| Row1      | CellA1          | CellB1         |
------------------------------------------------
| Row2      | CellA2          | CellB2         |
------------------------------------------------
| Row3      | CellA3          | CellB3         |
------------------------------------------------
```

It doesn't have to use ASCII (it can be Unicode), I meant ASCII in the sense of [ASCII art](https://en.wikipedia.org/wiki/ASCII_art).

This would be useful for sites that don't support proper tables (like Stack Exchange).