01
Define a Flow
Add tasks, set request count, configure headers and auth
v1.0.0 — Windows
Simulate API traffic.
Before it matters.
Define flows, fire requests, watch your API break - on your machine, before your users find the cracks.
Free. No account. No cloud.
simuflow - demo
What this GIF shows
The GIF above shows 10 simulated attempts to register the same user - the first one succeeds, the next 9 hit a 409. Exactly the kind of edge case you want to catch before your users do.
10k+ requests simulated · < 5s setup · 0 cloud dependencies
How it works
02
Configure behaviour
Set delays, failure injection, load patterns
03
Run and observe
Watch response times, error rates, and throughput populate live
GET/api/users
Headers Authorization · Content-Type
Body { }
Query page=1
GETPOSTPUTDELETEPATCH
Real HTTP execution
Headers, auth, body, params — all configurable. Method badges match the app palette: GET, POST, PUT, DELETE, PATCH.
Live metrics
Per-run response times, success and failure counts, min, max, and average — updating in real time as your run progresses.
Run metrics
p50
42ms
errors
3
throughput
1.2k req/s
Ready to test your API?
Download for WindowsRequires Windows 10+. No Java install needed.
v1.0.0 · Released March 15, 2026