Emitting org-mode is extremely easy (obviously, or otherwise people couldn’t write it). I myself have not needed complex parsing of them, but simple regexes and

Emitting org-mode is extremely easy (obviously, or otherwise people couldn’t write it). I myself have not needed complex parsing of them, but simple regexes and perl scripts have served my needs. This is especially true when you impose some structure on your text. In the worst case scenario, you should be able to just use the elisp code itself to parse the file. There already are exporters to most other common formats.