General
Changes apply immediately and are saved for next time.
Website language
The language sites serve you in — Wikipedia, YouTube, news sites, and anything else that has a localised version. Sent as your Accept-Language header and navigator.language. Automatic follows your operating system; pick a language to override it. The same setting lives under Privacy → Anti-fingerprinting → Language for advanced modes (Spoof, Hide).
Startup
Appearance
Choose a theme for the browser. System follows your operating system's light/dark setting.
Developer tools
Where the Chromium DevTools panel appears when you press F12 or Ctrl+Shift+I. You can always drag it out to a separate window from inside the panel.
Registries
How Theseus picks between the BCNR / BCDN and ICANN / IANA, when a name exists in both.
.de). BCNR-unique TLDs (that only exist on BCNR) never conflict.About
Plug-ins
Silent Mode components that live alongside Theseus — each with its own on/off, updates and settings page.
Ariadne's Thread
A local daemon that resolves BCDN names for every browser on this machine (Chrome, Edge, Firefox, etc.), not just Theseus. Turning it off means non-Theseus browsers stop resolving .bch / .x / other BCNR TLDs; Theseus keeps working either way, since it has its own built-in resolver.
Status
Collision policy
When a name exists on both BCNR and ICANN, which one wins? Applies machine-wide — every browser sees the same answer. Change is picked up within 5 seconds; no daemon restart, no UAC.
Sources
Each index source can be toggled independently to isolate a path or measure without it. Changes hot-reload every 5 s via C:\ProgramData\Ariadne\policy.json — no restart. State column shows the last attempt result for each.
Status report
Full snapshot of what the daemon currently sees — daemon version, permitted TLDs, index size, last fetch per source. Paste into a support conversation.
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Remove
Uninstall the resolver from this machine. Theseus itself keeps working — its built-in resolver isn't affected.
C:\ProgramData\Ariadne\. Prompts for admin.Aegis
Multi-chain wallet (BCH, BTC, TRX, ETH, SOL, SC, DGB) that ships in the box. Bundled with Theseus, but updates are delivered over-the-air: new signed versions land without a Theseus release. Runs entirely inside this browser — never system-wide.
Status
Search
Pick what your address bar and the toolbar dropdown search with.
Passwords
Local password vault. Set once, unlocked with a master password. Encrypted at rest; nothing leaves your machine.
Add an entry
Performance
Keep Theseus light on resources. Trackers, ads and cookie pop-ups are under Privacy.
Privacy
What Theseus keeps from sites: trackers, ads, cookie pop-ups, your device and your whereabouts.
Tracking protection
Shield and Cookie Pop-ups also sit in the toolbar's extension row if you want them there: right-click the row and choose "Show hidden".
Device access
enumerateDevices() — closes a WebRTC fingerprinting leak, like Firefox.Anti-fingerprinting
For each: Show (real), Hide (neutral value), Spoof (a decoy), or Manual (set your own).
Accept-Language and navigator.language. Same control as General › Website language and the globe chip in the URL bar; all three stay in sync. Automatic follows your operating system; Manual pins a specific language.navigator.geolocation answers with a plausible position instead of your real one.Network
Browsing data
By default Theseus keeps nothing across sessions — everything toggled on here is wiped when you quit. Untoggle a bucket to keep it (e.g. cookies to stay signed in on trusted sites).
Exceptions
Sites you asked Shield or Cookie Pop-ups to leave alone. Remove one to protect it again.
Shield allowed through
Cookie pop-ups left alone
Extensions
Small modules that add capabilities to Theseus. Extensions live as folders under
%APPDATA%\Theseus\extensions\. Drop a folder in, restart, it's live.
Bundled reference extensions (like the Notepad) are copied there on first run — you can edit or remove them
without losing anything the browser needs.