WebSocket & Socket.IO Client
Developer Tools
Test WebSocket and Socket.IO connections with a lightweight client. Send messages, view history, and save frequently used requests.
- Store users
- 3K
- Ratings
- 5.0/ 5 2 ratings
oslook.com
5 listings we've seen · as of 4 Oct 2026. This is the maker name shown on the store, not proof of who owns the company.
JSON Formatter & Viewer
Developer Tools
JSON formatter and viewer for Chrome — auto pretty-print, parse & validate, tree & text views, syntax highlighting, search.
- Store users
- 240
- Ratings
- 4.0/ 5 2 ratings
GitHub Repo and File Size
Developer Tools
A Chrome extension that enhances GitHub's file browser by displaying file and repository sizes directly on GitHub.
- Store users
- 193
- Ratings
- 5.0/ 5 1 rating
Picture-in-Picture + Miniplayer for YouTube
Workflow & Planning
Picture-in-Picture and Miniplayer buttons for YouTube — switch either on or off, with auto-exit and keyboard shortcuts.
- Store users
- 90
- Ratings
- Not rated yet
JWT Decoder & Verifier
Developer Tools
Decode and verify JWT tokens (JSON Web Token) with a beautiful interface
- Store users
- 44
- Ratings
- Not rated yet