Detour by Mathieu Mafille

Detour is a simple, intuitive proxy switcher. Save configurations as named
profiles, switch the active one from the toolbar, and toggle it on or off — no
digging through system settings.

Features:
- Save multiple named proxy profiles and switch the active one directly from
the toolbar popup.
- Toggle the active proxy on or off in one click.
- Supports HTTP, HTTPS, SOCKS4, and SOCKS5 proxies.
- Username/password authentication for every scheme — including SOCKS, which
Firefox supports natively.
- Bypass list: choose hosts that connect directly, skipping the proxy. Use
<local> for localhost, <private> for all private networks, *.example.com for
subdomains, or 10.0.0.0/8 for an IP range.
- Built-in connection test that reports your exit IP and latency before you
commit.
- Dedicated settings page to create, rename, duplicate, or delete profiles,
with import/export of all profiles to a JSON file for backup or moving
between machines.
- An ON badge on the toolbar icon shows at a glance when the proxy is active.

Privacy:
Detour collects no data. There is no analytics, no tracking, and no remote code.
Your proxy details and credentials stay in your browser's local storage and are
never sent to us or anyone else. Detour is open source.