"We replaced three internal load-testing scripts with OverloadLab. The Layer 7 coverage caught a CDN misconfig that would have crashed our Black Friday peak."
4+ Tbps
Network power
12k+
Engineers
99.9%
Uptime
Best Overload Test for Real Network Stressing — Without the Guesswork
OverloadLab is the secure, reliable overload-testing platform engineers trust to validate their own infrastructure against real test attack patterns. Sign up free, see results in minutes.
Trusted infrastructure
Built on transparent numbers and real engineering teams
From indie SaaS founders to platform teams at global e-commerce brands, OverloadLab is the network stressing partner teams choose when downtime isn't an option.
4.2 Tbps
Aggregate capacity
42
Test methods
12,400+
Verified accounts
99.94%
Platform uptime · 12mo
"Their authorisation flow is the strictest I've seen. That actually made internal compliance approve the whole project in a single review cycle."
"I shipped a meaningful overload test in under ten minutes. As a solo dev, this is the first stress tool that didn't feel built for a Fortune 500."
Validated by teams at
NORTHGRID
Helix.io
STAQ
Aperture
Lumenpath
A clearer choice
OverloadLab vs. the typical stress-testing toolbox
Legacy network stressing tools force you to wrangle servers, IP rotation and brittle scripts. OverloadLab gives you a complete, audit-ready overload test environment in a single pane.
OverloadLab
Engineered for safe, modern overload testing
- Ownership verification on every target — built-in compliance
- 4+ Tbps elastic capacity, distributed across global PoPs
- 42 test methods covering Layer 4 and Layer 7 patterns
- Real-time dashboards + exportable PDF/CSV audit reports
- First overload test launched in under 5 minutes
- Free starter tier — no card, full feature preview
Typical alternatives
The old way of doing network stressing
- No authorisation checks — pure trust-the-user model
- You provision and pay for VMs, IPs and bandwidth yourself
- Narrow protocol coverage, rarely both L4 and L7
- Raw logs only — no audit-grade reporting
- Hours of YAML, scripts and infra plumbing per test
- No free tier — heavy upfront commitment
Capabilities
Every overload scenario you need — engineered for authorised testing only
From transport-layer floods to fully-rendered HTTPS workloads, OverloadLab covers the test attack patterns modern networks must withstand.
Layer 4 transport coverage
Validate TCP, UDP, SYN and connection-state behaviour against high-volume packet rates to confirm firewall and NAT thresholds on your own perimeter.
Layer 7 application traffic
Realistic HTTPS, HTTP/2, WebSocket and JSON-API flows — including browser-like sessions — so you can see exactly how your app tier behaves under load.
WAF & rate-limit validation
Probe authorised endpoints with adaptive bypass techniques to confirm that your WAF, bot filtering and rate-limiting rules trigger exactly when they should.
Multi-region origination
Send overload traffic from globally distributed nodes to validate geo-DNS, anycast routing and CDN edge performance under realistic conditions.
Capacity planning
Stop guessing your ceilings. Pinpoint exact saturation curves for CPU, memory, sockets and bandwidth — and budget infrastructure with evidence.
Pre-launch confidence
Run scheduled overload tests before product launches, marketing peaks and tenant migrations. Ship code knowing your stack survives traffic surges.
From zero to insight
How an overload test runs on OverloadLab
Designed to feel obvious — even when the underlying engineering is anything but. Four steps from sign-up to a full network stressing report.
Step 01
Create your free account
Sign up in seconds. No credit card. Instant access to the dashboard, 42 methods and starter capacity.
Step 02
Verify ownership
Confirm you control the target via DNS TXT or HTTP token. Only verified assets can be tested — every time.
Step 03
Configure your test
Choose a Layer 4 or Layer 7 method, pick duration and intensity, and select origination regions. Smart presets if you're new.
Step 04
Review the report
Watch live telemetry, then download an audit-ready PDF with thresholds, saturation graphs and recommendations.
Why teams switch
The benefits engineers actually feel from day one
Power, safety and clarity — without the operational tax of running your own stressing fleet.
Security-first by design
Mandatory ownership verification, encrypted reporting, scoped tokens and immutable audit logs. Your overload test program stays defensible.
Genuine 4+ Tbps power
Real, measurable capacity — not throttled trial numbers. Push large environments to meaningful saturation without queuing or sharing.
5-minute time-to-insight
From sign-up to first chart in under five minutes. Guided presets remove the YAML so you can spend time on findings, not config.
Reports your auditors love
Each overload test produces a structured, branded report — perfect for SOC 2, ISO 27001 and customer security reviews.
One dashboard, 42 methods
Swap test attack patterns with one click. Layer 4 transport, Layer 7 application, mixed traffic, slowloris-class — all curated and updated.
Transparent, generous free tier
Run real overload tests on the free plan — no fake feature locks. Upgrade only when you need scale, regions or unlimited targets.
Mini case study
How Helix.io cut peak-traffic incidents by 78% in one quarter
A focused look at a real OverloadLab customer using authorised testing to harden their checkout pipeline.
E-commerce platform · 11M monthly users
Replacing guesswork with weekly overload tests
Helix.io's platform team kept hitting unpredictable saturation spikes during marketing pushes. Their legacy load-testing scripts could simulate volume, but not the asymmetric Layer 7 patterns they actually saw in production.
They moved to OverloadLab to run weekly authorised overload tests against staging clones — covering both Layer 4 ingress and full HTTPS checkout flows from multiple regions.
Within ten weeks the team had quantified every saturation point, tuned three CDN rules and resized one Postgres tier. The next quarter's launch went out without a single SEV.
−78%
Peak-traffic incidents
3.4×
Throughput headroom unlocked
9 min
Avg. time to a weekly report
"It's the first stressing tool that gave our auditors and our SREs the same answer." — Platform Director, Helix.io
4.2 Tbps
Tested peak throughput
42
Curated methods
99.94%
Rolling uptime
5 min
First-test setup
Questions, answered
Frequently asked questions about overload testing
Everything new users want to know about running a safe, lawful overload test on their own infrastructure.
What exactly is an overload test?
An overload test is a controlled, authorised stress simulation that pushes your servers, APIs or network paths beyond normal traffic volumes so you can confirm thresholds, autoscaling rules and failover logic before real incidents happen.
Is OverloadLab legal to use?
Yes — OverloadLab is intended exclusively for authorised testing of infrastructure you own or have explicit written permission to assess. Every account agrees to a strict acceptable-use policy and ownership verification.
How is OverloadLab different from typical network stressing tools?
Most legacy tools force you to manage hardware, IP pools and scripts. OverloadLab gives you a single dashboard with 40+ test methods, real-time analytics, capacity up to 4+ Tbps and audit-grade reporting — no provisioning required.
Do you support both Layer 4 and Layer 7 test attack scenarios?
Yes. We cover Layer 4 transport flooding patterns and sophisticated Layer 7 application traffic profiles including HTTPS, WebSocket and API workloads, so you can probe every tier of your stack.
How quickly can I start my first overload test?
Most users launch their first authorised test within five minutes of signing up. Verification, target setup and method selection are streamlined in a guided flow.
What kind of reports do I get?
You receive live dashboards plus exportable PDF and CSV reports detailing response times, error rates, throughput, regional performance and saturation points — ready for engineering reviews or compliance audits.
Run your first overload test in five minutes — free
Join 12,000+ engineers who validate their own networks the safer, faster way. No card. No commitment. Real capacity.