For joining two similar things:
* Also
* Furthermore
* Moreover
* As well as
* In addition
* Besides
For joining two contrasting things:
* But
* Yet
* However
* Nevertheless
* On the other hand
For showing a consequence:
* So
* Therefore
* Thus
* Hence
For adding emphasis:
* Indeed
* In fact
* Actually
For listing items:
* Then
* Next
* Finally
It's always best to choose a synonym that fits the specific situation and makes your writing clear and concise.