I use two different programs for different purposes, both free. MyHeritage (Family Tree Builder
https://www.myheritage.com/family-tree-builder) has a nice visual/editor display, you can ignore the project sync, no subscription required. Gramps has very powerful filtering/editing/display capabilities. Both have different data validations (LACKING in wikitree): FTB finds things like inconsistent names, place spellings, females married to females, missing gender; Gramps find things like impossible dates/relationships with many variations, and finding/removing unrelated people (good when relationships change but people remain on your watchlist). Gramps has a very nice ancestor/descendant display, reminds me of the old rootsweb user interface where I can see 20 generations in a single screen, some would consider it 'bare bones'. For both programs I fix any data errors found in the 'System of Record' (wikitree). Now that Chris has fixed most of the import/export quirks such as biography converted to valid notes, the imports work well. Some wikitree-specific tags are not understood (PGVN, MARN, AUTH, WWW), also missing relationships when only ancestors are exported (automatically fixed by program), not a big deal because they can be converted to notes on import. At least the wikitree URL for the profile is included.
For those importing a new gedcom - please please please fix all validation errors and add any missing dates (even estimated).
Another tip - for location validation - to make sure it really exists and is spelled correctly - use
https://familysearch.org/catalog/search (location search is the default).