Ian Radcliffe's site: www.mannincloud.info
Brian's original site: www3.telus.net/lawson/wills/_will_index.html
Jim Smith's site (includes Joyce Oates' collection): mathjim.ca/IOM1/Wills.html
IOMFHS site (index only, no transcriptions): www.iomfhs.im/resources/wills/Index_A-Z.html
Frances' wills and will summaries: www.isle-of-man.com/manxnotebook/famhist/wills/index.htm
English wills and probate 1858-present (close the gap): ht tps://probatesearch.service.gov.uk/#wills
I also have several hundred primarily Kaighin wills transcribed, but not yet published. If you want a lookup on one of those please let me know.