Some people have already seen this, and I've kind of replicated Jamie's Missing Links app without realising it, but... This is a little different, and I think I'm finished with it now, so here is a new Missing Parents app.
This app finds the ancestors of you and your cousins (or anyone else and their cousins) (up to fourth cousins) who have a parent (or two) missing. It also suggests people who may be missing a spouse or child. The results are in a sortable table, with Connection Finder and Relationship Finder links as well as a house/home icon, which will show a list of each person's family members (any parents, siblings, spouses, and children) with dates and locations. There are more details if you click the '?' in the top-right-hand corner of the page. I hope some people find it useful.
While I'm here, I have a small WikiTree BEE update, somewhat related to this app, as it also helps to find missing connections. On the 'My Connections' page, the BEE will give you a table with a count of your connections on the page. For each degree, there's a 'Missing Connections' button which will look for those on the list with missing parents and possible missing spouses. There's also a table button for each degree to organise the results into a sortable table (also with the home icon to show each person's family members). The My Connections page maxes out at 1000 results or a certain number of degrees, but the BEE will keep going. Once you max out, the BEE will find the rest of the people in that degree and enable the button to fetch the next degree. When degree 7 completes, the BEE will give you some text to add your Connection Count at 7 degrees (CC7) to the table on Tommy Buch's CC7 page.
And while I'm still here, I'll say a quick public 'thank you' to Tommy for his huge help with both of these things above. Thanks again, Tommy.
If anyone sees any problems, please let me know (preferably privately). Thanks.