There are 2 repositories under enex topic.
Yarle - The ultimate converter of Evernote notes to Markdown
Backup & export all Evernote notes and notebooks
Import Evernote ENEX files to Notion
Dump the content of .enex files, preserving attachements, some metadata and optionally converting notes to Markdown.
Process JSON file with exported notes from SimpleNote for import into Joplin
Convert a Google Takeout zip file containing Google Keep notes to a directory of Evernote Export (ENEX) XML files, suitable for import into systems such as Evernote
Convert a various other note formats into ENEX files for suitable for import into Evernote. Supports OneNote and Google Keep.
Node cli app to convert html extract from Raindrop.io to Evernote enex format.
Convert Markdown to Evernote backup files
Code to backup Evernote notes. Extracts text/html, attached files and notebook structure.