Add Beadster to Community & Ecosystem section

- Native macOS app by @podviaznikov
- Provides multi-project issue visualization
- Addresses #117

README.md

@@ -364,6 +364,14 @@ For advanced usage, see:
 - **[CONTRIBUTING.md](CONTRIBUTING.md)** - Contribution guidelines
 - **[SECURITY.md](SECURITY.md)** - Security policy
 
+## Community & Ecosystem
+
+### Third-Party Tools
+
+- **[Beadster](https://apps.apple.com/us/app/beadster-issue-tracking/id6754286462)** - Native macOS app for viewing and managing bd issues across multiple projects. Features a compact, always-on-top window for quick reference during development. Built by [@podviaznikov](https://github.com/podviaznikov).
+
+Have you built something cool with bd? [Open an issue](https://github.com/steveyegge/beads/issues) to get it featured here!
+
 ## Development
 
 ```bash