Use the dedicated Web4 browser or the Chrome extension to unlock private explorer features: signed access to your encrypted conversation logs and personal knowledge objects.
Standalone app with no third-party extensions, OS keychain-backed keys, and the same window.kapra bridge as the extension. Installers are published from the public kapra-downloads hub (manifest + releases); env vars can override URLs per environment.
Use inside Chrome with the same private bridge. Install from the store when listed, or use a release zip / load unpacked dist/ from the repo.
After installing, open Web4 Private Explorer or Privacy logs, link a mobile device, or open Messaging / Glow—the bridge must be active for signing and decryption.
Hosting: the public repo KapraLabs/kapra-downloads hosts downloads-manifest.json and release binaries. Site routes /api/web4-browser-download/<platform> and /api/web4-extension-download resolve env overrides first, then manifest URLs, then the latest release assets on that repo (browser route prefers KapraWeb4Browser_*.msi over legacy dotted names when both exist). Optional: KAPRA_DOWNLOADS_MANIFEST_URL, KAPRA_DOWNLOADS_GITHUB_TOKEN.