I only know the 2 meanings of it as follow:

  1. Use when thinking - no meaning
  2. Use to agree with others - the meaning is like "yes, I think so"

What else and what situation can it be used?

If someone ask me "これはあなたの財布ですか？”, Can I answer 「そうですね」? Is it strange? or Is
it better to answer without 「ね」?
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2011-11-07T15:29:13.030
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2011-12-29T05:24:51.760
2011-12-29T05:24:51.760
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question
word-choice translation words meaning register
How and when to use 「そうですね」？
In your example:

> これはあなたの財布ですか

そうですね doesn't work.

The ね at the end gives a feeling of asking for a confirmation (As in _yes,
right?_ )

At the beginning of a sentence ね is used to get someone's attention or (if
followed by an interrogation mark) to ask for confirmation.

Just use そうです instead.
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2011-11-07T15:52:27.930
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2011-11-07T15:52:27.930
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answer
そうですね can also be if you are thinking about the response or even if you are
disagreeing with a statement.

```

    最近円高って大変だと思わないですか
    そうですね。大丈夫だと思いますよ。
    
```

It is used by a listener to acknowledge something you said, but not
necessarily agree with it. Like, 'I get that you think that, but I completely
disagree.'
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2011-11-09T13:54:27.990
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2011-11-09T13:54:27.990
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answer