Jimmy
jimmy is an open-source command-line tool that converts notes from proprietary note-taking applications into Markdown files. It supports exports from Notion, Evernote, Bear, Joplin, Simplenote, Standard Notes, and several other formats. The output is plain Markdown with frontmatter, preserving note structure and attachments where possible.
Migrating a personal note archive out of a proprietary app is a friction-heavy task: export formats vary, internal links break, attachments scatter, and formatting degrades. jimmy automates the conversion step, producing a clean Markdown output that can be committed to a Git repository, opened in Obsidian, or ingested by any plain-text workflow.
Placed in Assess at center position because the tool solves a specific one-time problem — note migration — rather than an ongoing workflow. It is worth evaluating for any developer looking to escape a proprietary notes app into a plain-text system. The center position reflects that the value is concentrated in a single migration event; there is no ongoing operational role once the migration is complete.
No equivalent migration aggregator covering this range of source formats is currently on the radar.
