Your app is talking.Start listening.
Then change what it says, mid-sentence.
Burp and Fiddler are for HTTP. InterceptSuite is for everything else: raw TCP, TLS, DTLS, QUIC, UDP and STARTTLS.
Built for thick-client pentesters, malware analysts and teams debugging custom protocols.
From $200/yr
client
Suite
server
Hold, edit and forward packets live. In 2.0, Replay lets you send your own packets to any host, or resend captured ones from history.
Built for the traffic nobody else opens
Malware analysts
Read the C2 channel in the clear
Custom binary protocols over TLS, DTLS or UDP. Decrypt the beacon, edit the command, watch the sample react - all locally, inside your lab.
See the guide →Pentesters & red teamers
Test thick clients like web apps
Proxy a desktop app's raw sockets, tamper with its wire format, and find authorisation flaws HTTP tooling never sees.
See the guide →IoT & protocol researchers
MQTT, CoAP, DTLS and worse
Datagram-first devices, oddball framing, firmware with its own dialect - plus databases over TLS: PostgreSQL, MySQL, MSSQL.
See the guide →Developers & QA
Debug the protocol you wrote
Corrupt a field, cut a stream mid-handshake, replay a captured session - reproduce the bug on demand instead of waiting for it.
See the guide →6
Protocol families
3
Platforms supported
7-day
Free trial no card
$200
Per year InterceptSuite
Coverage beyond HTTP
InterceptSuite works at the transport layer, so it sees what HTTP tooling can't: IoT devices, thick clients, databases over TLS, gaming and VoIP protocols, and anything proprietary.
TCP
Common stream protocols, decrypted and editable
TLS
Full MITM with automatic certificate generation
DTLS
IoT and real-time datagram traffic
QUIC
Raw QUIC v1 streams incl. HTTP/3, decrypted and editable
UDP
Bare datagrams, DNS, games, VoIP
STARTTLS
TCP protocols that upgrade mid-stream
Hold the packet. Rewrite it. Send it on.
Not a capture you read afterwards - a live handle on the connection. Freeze a frame mid-flight, edit the bytes in hex or text, forward it, drop it, or send it a hundred times and see what the client does. Both directions, same window.
- Real-time packet editing in both directions
- PCAP export for Wireshark forensics
- Universal TLS upgrade: STARTTLS, SMTPS, IMAP, PostgreSQL, MySQL
- CA certificate management handled for you
Repeater for raw sockets.
Enter a host, port and protocol and send whatever you like, or send a captured packet straight from Proxy History. Edit it in text or hex, resend it, and read the reply, one tab per test.
- TCP, TLS, STARTTLS, UDP, DTLS and QUIC
- Upgrade to TLS mid-session for STARTTLS testing
- QUIC stream and ALPN controls
- Sessions saved with the project
Extend with Python.
Write custom protocol dissectors, automate packet manipulation, and integrate with your security workflows using the full Python extension API - hot-reloaded while you develop.
- Custom protocol analyzers
- Simple plug-in API
- Full documentation and examples
- Hot-reload during development
Nothing held back.
One licence unlocks the full suite of professional-grade tools - no tiers, no add-ons.
Interception
TLS interception
Full MITM for TLS, DTLS and TCP with automatic certificate generation and its own CA.
Extensibility
Python extensions
Write custom protocol dissectors, automate packet manipulation, hot-reload while you develop.
Recall
Session history
Save, search and replay captured sessions across projects, with full connection detail.
Forensics
PCAP export
Export captures directly to Wireshark-compatible PCAP files for deeper analysis.
Routing
SOCKS5 proxy
High-performance built-in proxy with advanced per-app routing rules.
Organisation
Project management
Persistent project storage keeps every engagement's captures where you left them.
Nothing scrolls away.
Track every connection as it happens, then export the whole capture to PCAP and open it in Wireshark for deep forensic work. TCP, TLS, DTLS and UDP, on all three platforms.
Three steps to decrypted traffic
Route the app through the proxy
Point the target at the built-in SOCKS5 listener - or use a transparent redirector when the app has no proxy settings at all.
Trust the CA once
InterceptSuite generates and manages its own CA, then handles TLS and DTLS termination and re-origination automatically.
Watch, hold, rewrite
Every connection lands in the history, decrypted. Turn intercept on and the next matching packet waits for your edit before it goes anywhere.
Your web proxy stops where we start
Keep using HTTP-focused tools for web apps and REST APIs - that's what they're good at. Reach for InterceptSuite the moment the traffic stops being HTTP.
| Use case | InterceptSuite | HTTP intercepting proxies | Packet sniffers |
|---|---|---|---|
| Web apps and REST APIs | Limited | Best fit | Read-only |
| Thick-client & custom protocols | Yes | No | Read-only |
| IoT over TCP / UDP / DTLS | Yes | No | Read-only |
| Databases over TLS | Yes | No | Keys required |
| Gaming, VoIP and real-time UDP | Yes | No | Read-only |
| Edit packets in flight | TCP/UDP + TLS/DTLS/QUIC v1 | HTTP only | No |
| STARTTLS upgrade detection | Yes | No | No |
| QUIC and raw HTTP/3 (QUIC v1) | Yes | Limited | Keys required |
Learn it on a real target
Pentesting
Burp not intercepting your thick client?
Why Burp goes quiet on raw TCP and TLS, and how to intercept it.
Read the guide →Alternatives
Echo Mirage alternative for Windows 10/11
A modern, proxy-based replacement for DLL injection.
Read the guide →Malware analysis
Decrypt and modify C2 TLS traffic
Read the beacon, edit the command, replay it in your lab.
Read the guide →Release
InterceptSuite 2.0: Replay, rules, Scope, AI access
What is new in the biggest release so far.
Read the guide →$200 a year. All of it unlocked.
Start with a seven-day trial: full feature access, no session time limit, no credit card. Then $200/yr for one seat, $170/seat per seat for teams of five or more, or custom terms for enterprise.
$200/ year
- Every protocol and feature, no tiers
- Windows, macOS and Linux builds
- Email support and all updates
FAQ
Common questions.
Everything you need to know before getting started.
Who is InterceptSuite for?
Anyone who needs to see what an application sends over the network: developers debugging client-server traffic, penetration testers and red teamers, malware analysts inspecting C2 communication, QA engineers, and IoT or database protocol researchers.
How does InterceptSuite differ from Burp Suite?
Burp Suite is designed for HTTP/HTTPS traffic only. InterceptSuite targets non-HTTP protocols - raw TCP, TLS, DTLS, STARTTLS, QUIC, and UDP - covering thick clients, IoT devices, databases, and any custom protocol.
Is there a free trial?
Yes. InterceptSuite offers a 7-day free trial with full feature access and no session time limit. No credit card required.
What operating systems are supported?
InterceptSuite supports Windows, macOS (Apple Silicon), and Linux.
Are there protocol limitations?
Yes. InterceptSuite supports common TCP/UDP-based protocols (including raw HTTP/3 over QUIC v1), but some niche or heavily customized protocols may need additional configuration or custom Python extensions. DTLS 1.3 and QUIC v2 are not supported yet.
How do I intercept TLS traffic?
Route your target application through the built-in SOCKS5 proxy. InterceptSuite handles certificate generation and TLS termination automatically.