On the contrary
In/By contrast
In/By comparison
Compared to/with
Conversely
On the one hand… on the other hand
However
Nevertheless/nonetheless
Looking at it from the opposite point of view
Against this could be argued that
It might be objected that

Yet (a fact that seems surprising after what you have just say The sun was shining, yet it was quite cold.)

As against (comparing two pieces of information in order to show how they are different Last year there were 468 industrial accidents as against 245 in 1984

Regardless of (when what s done is not affected by different situations, problems etc The rate of contribution to the pension plan is the same for all employees, regardless of age.)

In spite of /despite / in spite of the fact / despite the fact that (even though something happens or is true, especially something bad In spite of the language difficulty, we soon became friends. Many people give quite a bit of money to charities, despite the fact that they do not have that much them selves.)

Despite yourself (despite efforts to behave or feel differently At the end of the movie, Suzie began to cry despite herself.)

Pale in/by comparison with (to look worse or much less important in comparison Forecasters say this year’s floods could make that of 1999 pale by comparison.)

- Summarising and concluding an argument

To summarise
To sum up
On balance
In conclusion
To conclude
On the whole
All things considered
All in all