I can think of is Adobe Flash CS5. Maybe it's a professional one but it is the best. With it you can do whatever flash animation you want. But, if you haven't used Adobe's products it will be kinda hard to get started, but you can find very good video tutorials on internet.
For flash animation, obviously Adobe Flash is the best software but as mentioned earlier, it requires not only skills to work in it but also costly.
However, there are many other softwares if you want only text animation.
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