OOREP is an acronym for open online repertory for homeopathy. It features many of the classical repertories like Kent or Hering to be looked up via a OS-independent web-site. The source code of OOREP is freely available under an open-source license.
It can be found at: https://www.oorep.com/ free of cost.
One can look up, for example, “Pain” to get all results related to pain. But one can also lookup “Pain*” to also get results containing “painful”, “painless”, etc.
You can also exclude words from the search, for example, using “Pain, -abdomen”, if you’re not looking for any abdominal rubrics.