Free IP stresser · IP booter · 2026

Free IP stresser
& IP booter
that actually hits

RETRO//STRESS is a free IP stresser and IP booter with a free trial: Layer 4 TCP/UDP floods, Layer 7 HTTP stress testing, crypto plans, zero-log panel. Launch from the web, API, or CLI.

Start free stresser → Browse methods
Free IP stresser IP booter Best stresser 2026
41 methods · free IP stresser trial · crypto · no lock-in
41
L4 / L7 methods
<40ms
launch latency
20×
concurrent tests
3
ways to drive it
Trusted by infra & hosting teams who own their targets
Your workflow, your interface

Drive it however you work

The same engine behind a panel, an API, and a CLI. Start in the browser, automate in CI, script from a shell. Your tests move with you.

⊞

Web panel

Point-and-click launcher with live monitoring, method categories, geo selection and scheduling.

Explore the panel →
⟨⟩

REST API

Every action scriptable: launch, poll, stop. Token-auth, JSON in/out, built for CI gates.

Read the API →
▸_

CLI + Capture

Capture real traffic on desktop/mobile, convert it to a chain, replay it from the terminal.

Get the CLI →
How it works

Capture → chain → replay

Turn real traffic into a repeatable, shareable stress test in three steps.

01

Capture

Record live packets with the desktop, CLI or mobile client, or skip straight to a method.

→
02

Build a chain

Compose a precise TCP/UDP/ICMP sequence in the .chain builder, or auto-import from a PCAP.

→
03

Replay & monitor

Fire it at infrastructure you own, scale concurrency, and watch latency and loss in real time.

Flagship · packet chains

Packet-level control, not a slider toy

Compose exact TCP/UDP/ICMP sequences: per-step flags, payloads, delays and SEQ/TS/IPID overrides. Export an open .chain file, version it in git, replay it anywhere.

→Step-level TCP flags & payloads
→PCAP auto-import from real captures
→Open .chain v1.3, portable & diffable
Browse methods →
Capture & replay

Real traffic becomes a repeatable test

Record a real session with the desktop, CLI or mobile client. We extract endpoints and timing and hand you a clean chain you can fire on demand, as often as you need to prove a fix.

Desktop CLI Mobile PCAP → .chain
See a use case →
41 methods

A method for every layer

Browse all methods →
SYNACKUDP-PPSUDP-RANDDNSCLDAPSTUNHTTP-CLOUDFLAREHTTP-BYPASSBROWSERICMPFIVEMRUSTMINECRAFTTCP-KILL+26 more
Powerful IP stresser · clear rules

Full-power IP stresser & IP booter panel

Free stresser trial, paid concurrency when you need it. Test targets you own or are allowed to hit — AUP-enforced, audit-logged, abuse terminated.

Free IP stresser trial IP booter methods AUP enforced
Read our AUP
Proof

Numbers, not vibes

“We reproduced the exact UDP pattern that took us down, then proved the new scrubbing held. Took an afternoon.”

Infra lead · game hosting

“The .chain export means our stress tests live in git next to the code they protect.”

SRE · fintech

“Capture-to-replay turned a vague incident into a regression test we run every deploy.”

Network engineer
Flexible plans

Pay for the capacity you need

From a free tier to 20 concurrent tests with extended durations. Move the sliders, get a recommended plan, crypto-paid, cancel anytime.

Configure your plan →

Prove your infrastructure holds.

Start free in the browser, upgrade when you need more concurrency.

Start free → Read the FAQ