# SonghaiFan/leftopen

<https://repo.masters-masters.com/en/repos/SonghaiFan/leftopen>

[Home](https://repo.masters-masters.com/en) › [SonghaiFan](https://repo.masters-masters.com/en/owners/SonghaiFan) › [leftopen](https://repo.masters-masters.com/en/repos/SonghaiFan/leftopen)

SonghaiFan/leftopen has 143 stars on GitHub. Its RepoMasters card: Prototype tier. Native macOS menu bar app & CLI to see what is listening on localhost…

| Field | Value |
| --- | --- |
| Owner | [SonghaiFan](https://repo.masters-masters.com/en/owners/SonghaiFan) |
| Stars | 143 |
| Forks | 11 |
| Language | [Swift](https://repo.masters-masters.com/en/languages/swift) |
| License | MIT |
| Created | 2026 |
| Topics | developer-productivity, developer-tools, kill-port, localhost, lsof, macos, menubar-app, port-manager, ports, apple-silicon |
| Tier | [Prototype (100 to 249 ★)](https://repo.masters-masters.com/en/ranks/rush) |
| View on GitHub | [SonghaiFan/leftopen](https://github.com/SonghaiFan/leftopen) |

## Repository

Native macOS menu bar app & CLI to see what is listening on localhost, identify projects & processes, and gently close them. The safer alternative to lsof and kill-port.

The tier for repos with 100 to 249 ★. Published odds per card pulled: 70%. Rarity: Common.

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Data: GitHub · Illustration drawn by RepoMasters from the repo’s ID and its language color.