There are a couple of good reviews with links to all important tools, for example a fairly recent one is https://doi.org/10.1093/bib/bbv055.
There is no gold standard and different tools were optimized for very different scenarios. Some tools require matched normals. Some use pool of normals for better coverage normalization. Some support off-targets reads for assays without tiling probes. Some are tumor purity and ploidy aware and provide integer copy numbers. Some tools work better in high-throuput settings than others. Some work better in clinical samples (low purity FFPE samples for example) than others.
A few recent tools not mentioned in the review or in the previous posts: CopywriteR, EXCAVATOR2, GATK4 beta, Sequenza, Facets, PureCN.