What are the available options free & paid in regards to lossless codecs? Which do you use?

The two I've been using are
* huffYUV Huffyuv - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Huffyuv)
* Lagarith Lagarith - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/Lagarith)

Lagarith appears more modern and multithreaded, if you use Handbrake for transcode I believe it will only accept huffYUV. Thye both are very good and open source - no need to pay any money for a commercial alternative.

List of other lossless at List of codecs - Wikipedia, the free encyclopedia (http://en.wikipedia.org/wiki/List_of_codecs#Lossless_compression)