There is a very nice script for travian called Resource++. Its main features are monitors for recourses overflow, which are very nice to plan your time. Watch the video to understand how how cool the script is.
At the moment, there are 4th version already available. Here how it looks:

Popularity: 19% [?]

The amount of the script features is very impressive. It’s very useful. I can say it by my own experience. Download it here. Remember, you need greasemonkey script engine for firefox to use it.
Quick Target Features

Quick Scout - sends scouts to village (configurable)
Quick Fake - sends fake to village (configurable)
Quick Farm - farms village on [...]

Popularity: 39% [?]

Travian attack builder is a script which can automate sending attack waves to enemies. Its feautres are very simple:

Set up multiple waves
Automatic sending of those waves in one click
Fast and easy mass scouting
Multiple coordinates possible
The village ‘hopping’-problem is resolved
Catapult targeting available
Time the arrival of an attack.

Check it out. There are many language translations

Popularity: 30% [?]

There is a script for travian, called Travial Village Center Numbers. It is already third version out there and it worth to check out, cuz it slightly change graphic interface and show building lvls right on the village picture.
Check it out on the userscript site.
Script features list:

Window support
Background color green if building level = [...]

Popularity: 22% [?]

Here is a travian map script to download.
Short features list:

New navigation on map.
Use popup menu
Info table on map taken from travian beyond.
After 1 second check of type of a cell map
There is an opportunity of adjustment
Check all type
Hide/Show find type
Show all or only 9, 15 crop
Save 9 , 15 crop type
Hide/Show Info table
Save setting
Support karte2.php
Fine [...]

Popularity: 27% [?]