Hello all,
Most are in RAML .8, but I've converted some up to RAML 1.0 and successfully tested some OAS v2 conversions. I use the raml2html node library to generate html, but Mulesoft Anypoint has a nice free web editor for RAML if you wish to have a "live" editor with syntax checking. When Swagger-Codegen can convert to OAS 3 (currently it converts only up to OAS v2) and generate HTML from OAS v3, we'll switch to OAS v3. At which point, something like Swagger-Editor or something like that could be used instead.
For convenience, a list of all the HMIS-API pages and their github locations is here. Please feel free to submit issues and pull requests to each repository. Thanks! -Eric