Kosshi Outliner vs outl
Kosshi Outliner
kosshi.app
outl
outl.appSide by side
| Figure | Kosshi Outliner | outl |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | Yes |
| Windows | — | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| iOS | Yes | Yes |
| Android | — | Yes |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 2 |
| Spec score · Outliner Software | 8.0 (#15) | 8.5 (#8) |
| Maker | Kosshi is a solo project by Junichi Sato, who goes by Shirokuma. | The project is maintained by Thiago Avelino and states that there is no company behind outl. |
| Support | Users can contact the developer about problems, and the site also provides a forum for release discussions and feedback. | Users are directed to Discord for questions and GitHub issues for bugs. |
Plans
In their own words
Kosshi Outliner
Kosshi Outliner has no write-up on Specifiction yet; its figures are above.
outl
outl is a free, local-first outliner and bullet-point note app that stores plain Markdown files on disk. Its nested blocks, wiki-style links, backlinks, tags, and daily journal support structured note-taking. Stable block IDs and metadata are kept in sidecar files rather than the Markdown notes. Notes can be edited offline, and devices on the same Wi-Fi can sync directly without internet; device syncing uses peer-to-peer end-to-end encryption and does not require an account or cloud. Markdown code blocks can run Python, JavaScript, Lua, and Rust, with Lisp available behind a build flag. An MCP server lets compatible hosts including Claude, Cursor, Zed, and ChatGPT read and write local notes. Native desktop builds are listed for macOS, Linux, and Windows, alongside iOS TestFlight and Android APK beta builds. The product is pre-1.0, and the download page describes builds as public beta. The macOS desktop DMG is currently unsigned. An optional Docker deployment can run an always-on peer with a full replica of notes. Export formats include Markdown, JSON, and Hugo; navigation includes search, a fuzzy switcher, and a command palette.