如题，链接如下：
http://herbert.the-little-red-haired-girl.org/en/software/wavelet/
http://users.math.uni-potsdam.de/~gwl/
http://pages.cs.wisc.edu/~kline/wvlib/
https://code.google.com/p/wavelet1d/
http://www.gnu.org/software/gsl/manual/html_node/Wavelet-Transforms.html
http://www.maven.de/code/wavelet/
http://justpmf.com/romain/kicksey_winsey/
另外codeproject上有关的小波代码如下：
多维离散小波变换
http://www.codeproject.com/Articles/385658/Multidimensional-Discrete-Wavelet-Transform
采用小波变换的图像边缘检测
http://www.codeproject.com/Articles/21293/Edge-Detection-in-Images-with-Wavelet-Transform
采用SSE优化的Bior97小波嵌入零树编码图像编解码
http://www.codeproject.com/Articles/20949/Embedded-Zerotree-Image-Codec-with-Bior97-SSE-Opti
最简单的离散哈尔小波变换
http://www.codeproject.com/Articles/683663/Discrete-Haar-Wavelet-Transformation
一个2维快速小波变换的图像处理库
http://www.codeproject.com/Articles/20869/2D-Fast-Wavelet-Transform-Library-for-Image-Proces