See and change your app's HTTP traffic
Launch a browser or a terminal from Wirescry and its traffic appears — decrypted, formatted and searchable. Nothing is installed system-wide and no proxy settings change, so there is nothing to undo when you close it.
Free and open source. Pro is a paid add-on in the same download.
What the free app does
Watch everything
Every HTTP and HTTPS request and response, decrypted, with headers and bodies formatted rather than dumped.
Point anything at it
One click launches a browser or a terminal that already trusts Wirescry and already routes through it. Your system proxy settings are untouched and no certificate is added to your machine's trust store.
Find the one request
Narrow a busy session with filters like status>=400 or host=api.*, and read bodies decoded from gzip, Brotli or zstd and formatted, not as one long line.
No telemetry
No analytics, no usage tracking and no crash reporting anywhere in the app, and no account to create. Captures are held locally and cleared when you quit.
Keep it
No time limit and no account, on macOS, Windows and Linux alike. The core is open source under the AGPL — read it or build it yourself.
Your traffic stays on your machine
Wirescry decrypts HTTPS using a certificate authority generated on your computer the first time it starts, belonging only to you. Intercepted traffic is never sent to Casazium: it goes only where it was already headed, or wherever your own rules or edits send it. The app contacts the network to check for updates and, if you buy Pro, to activate your license. The Privacy Policy sets out exactly what that involves.
Wirescry Pro
The free app is complete. Pro adds the parts that change traffic rather than watch it.
Wirescry
Everything you need to see what your app is doing.
- See every HTTP and HTTPS request and response
- One-click setup for browsers and terminals
- Filter, search and inspect bodies
- macOS, Windows and Linux
- No time limit, no account
Wirescry Pro
FOUNDING PRICEChange traffic, not just watch it.
Yours for as long as you keep renewing. The founding price ends six months after launch, or when OpenAPI support and the request composer ship — whichever comes first.
- Rules: mock, reply from a file, forward, rewrite, simulate failures
- Breakpoints: pause any request or response and edit it
- Import and export your rules
- Use it on 3 computers
- Every update while you subscribe
- Coming: OpenAPI, request composer, gRPC, teams
Card required; nothing is charged for 14 days and you can cancel before then. Renews annually until you cancel. 30-day refunds. Students 50% off; free for open-source maintainers (see Questions below). See the Terms.
If you stop paying, you keep what you paid for
Pro stays working in every Wirescry version released while you were subscribed, on the computers where it is activated. You stop getting Pro in versions released after that. You are buying the software, not renting access to it.
Questions
- What happens if I stop paying?
- You keep Pro in the Wirescry versions released while you were subscribed, on the computers where it's activated. You don't get Pro in versions released after that.
- How many computers?
- Three. Move it whenever you like: deactivate it inside Wirescry, or free the old computer from your license page, linked in your license email.
- Do I need to be online?
- Only to activate, and occasionally after. Pro keeps working for up to 14 days after the license server last confirmed your license. On Linux without a keyring, Pro checks online each time it starts.
- Will the price go up?
- For new buyers, yes, as Pro gains features. Not for you — you keep the price you joined at for as long as you keep renewing.
- Can I get a refund?
- Within 30 days, for any reason.
- Is the free version really free?
- Yes, with no time limit and no account. Wirescry's core is open source under the AGPL.
- Is there a discount?
- Students get 50% off Pro. Maintainers of active open-source projects get Pro free for a year, renewable. To ask for either, email us from a school address or with a student ID, or with a link to your project.
Start with the free app.
It is the whole tool, not a trial. Add Pro when you need to change traffic rather than watch it.