Know Your Limits Before Your Users Do.
Distributed load testing with SLO enforcement, CI/CD gates, and real-time observability. AI-generated scripts, multi-protocol, zero-install extensions, and millions of VUs on your own infrastructure.
Need regression and functional testing? See QA Automation (AI) →
Five Load Profiles
Each profile answers a different performance question. Use one or chain them in a test plan.
Ramp
Gradually increase virtual users to a target load level. Use to find the breaking point and observe how performance degrades under rising traffic.
Flat
Sustain a constant number of virtual users for a defined duration. Use to establish a steady-state performance baseline.
Step
Increase load in discrete steps with hold periods between each. Use to identify the specific load level where performance begins to degrade.
Spike
Introduce a sudden burst of traffic above normal load. Use to validate how the system handles flash crowds and unexpected demand spikes.
Soak
Run a moderate load over an extended period (hours). Use to detect memory leaks, connection pool exhaustion, and resource degradation over time.
Custom profiles
Combine ramp + hold + ramp-down sequences into any shape you need
End-to-End Performance Testing Lifecycle
AI-native, multi-protocol, and self-hosted — across the full performance testing lifecycle.
Design & Create
AI Script Generation
Describe flows in plain English. AI generates full JS test scripts instantly with best practices, think time, data sources, and error handling.
HAR Import & Convert
Import any HAR file and convert it into a parameterized load test scenario in seconds. Get real-world traffic shapes without writing code.
Scenario Builder
Combine HTTP, WebSocket, and gRPC scenarios in one project. Reusable modules, variables, and environments built in.
Protocol & Extensions
Multi-Protocol Support
HTTP, WebSocket, and gRPC live side-by-side in the same test suite, run engine, and reporting pipeline.
Zero-Install Extensions
ctx.require() gives you faker, encode, assert, ml, csv, crypto, db, graphql, and more — zero npm install, works out of the box.
Custom Code & Logic
Write JS with full control. Reusable functions, data drivers, correlation, and advanced logic with built-in helpers.
Execute & Scale
Execute Tests
Run locally or in the cloud. Open-source engine with high performance, low overhead, and consistent results.
Distributed Execution
DISTRIBUTED_MODE=true adds worker nodes to scale to millions of VUs across regions and environments on your infrastructure.
Auto-Scaling Workers
Dynamic load generator scaling for ramp-up, soak, stress, spike, and stability tests with precise VU scheduling.
Analyze & Validate
Assertions & Checks
ctx.check() provides named assertions with pass/fail rates, thresholds, and rich context in reports.
Custom Metrics
ctx.metric.add() sends custom business metrics into results as structured time-series data.
Grouping & Insights
ctx.group() organizes steps and metrics for clear insights into performance by feature, flow, or transaction.
Secure & Govern
Native TLS & Security
SSL_CERT + SSL_KEY enables HTTPS instantly. ALLOW_INSECURE_TLS=true handles self-signed certs across HTTP, WebSocket, and gRPC.
Access & Auth
OIDC/SSO, role-based access control, API tokens, and team isolation built in for enterprise security.
Audit & Compliance
Full audit log, immutable history, data retention controls, and compliance-ready reporting.
True Multi-Protocol in One UI
HTTP, WebSocket & gRPC — Side by Side
No other open-source runner lets you mix all three protocols in the same test suite, run engine, and reporting pipeline without switching tools.
HTTP / HTTPS
Full REST API testing with correlation, parameterization, and custom headers. Supports GET, POST, PUT, DELETE, PATCH, and streaming.
WebSocket
Connect, send messages, and assert responses in real time. Test long-running connections, chat, and push notification workloads alongside HTTP tests.
gRPC
Load test gRPC services using proto definitions. Unary, client streaming, server streaming, and bidirectional streaming all supported.
Zero-Install Extension Ecosystem
Everything You Need. No npm Required.
ctx.require() works inside every scenario without npm install — no setup, no versioning conflicts, no build step.
ctx.require('faker')ctx.require('encode')ctx.require('assert')ctx.require('xml')ctx.require('ml')ctx.require('csv')ctx.require('crypto')ctx.require('db')ctx.require('graphql')+ MoreWhy it's different
Eight Things No Other Load Testing Tool Does
AI-native, zero-install, multi-protocol — and fully self-hosted. Most tools do one of these. QuickCloud does all eight.
AI-Generated Test Scripts
Describe a user flow in plain English and the AI writes the full JS scenario. No other open-source tool has this at the runner level.
Zero-Install Extension Ecosystem
ctx.require('faker/encode/assert/xml') — work inside every scenario without npm install.
True Multi-Protocol in One UI
HTTP, WebSocket, and gRPC scenarios live side-by-side in the same project, test suite, and run report.
HAR-to-Load-Test in Seconds
Record any browser session, import the HAR, and it becomes a parameterized replay scenario instantly.
Named Assertions + Custom Metrics
ctx.check(), ctx.metric.add(), ctx.group() report into run results as structured data, not just log lines.
Native TLS Termination with Zero-Config
SSL_CERT + SSL_KEY and the server goes HTTPS with no reverse proxy. ALLOW_INSECURE_TLS=true handles self-signed targets seamlessly.
Enterprise Trust Signals Built In
Public status (/status), security.txt, audit log, OIDC/SSO, and GitHub CI check posting are included, not sold as add-ons.
Self-Hosted + Distributed, Same Binary
One deployment runs UI, API, and workers. DISTRIBUTED_MODE=true scales to millions of VUs on your own infrastructure.
AI & Intelligence Engine
Always-on built-in intelligence at every step of the performance testing lifecycle.
Script Generation AI
AI writes full JS test scripts from plain-English descriptions — best practices, think time, and error handling included.
Test Optimization AI
Analyzes run history to identify redundant, flaky, or low-value scenarios and recommends pruning and improvements.
Data Correlation AI
Automatically identifies and correlates dynamic values (session tokens, IDs) between requests so replays stay accurate.
Anomaly Detection
Flags latency outliers, error spikes, and worker health issues during live runs in real time.
Failure Prediction
Predicts under which load conditions a service is likely to breach SLOs — before the test run completes.
Smart Recommendations
Post-run AI analysis surfaces bottlenecks, suggests parameter tuning, and flags regressions against historical baselines.
Supported Source Technologies
One script. Any protocol.
HTTP & Web
Enterprise & Data
Target Environments
Test anything. Deploy anywhere.
Application Types
Infrastructure
SLO Gates in Your CI/CD Pipeline
Define your SLOs once. QuickCloud enforces them on every run — automatically blocking the merge or deploy if thresholds are breached.
p95 response time
< 500ms
Error rate
< 1%
Avg response time
< 200ms
If any threshold is breached → GitHub Actions check fails → PR is blocked
Integrations
Virtual User Limits by Plan
Included in your flat subscription — no VU packs, no overage charges within your tier.
Migration Bundle Cloud Ops Bundle
Migration parity testing, regular regression runs, pre-launch validation
Full Platform
Production load testing, multi-scenario benchmarks, sustained soak tests
Enterprise
10,000+ VU global load tests, dedicated worker infrastructure, custom SLA
For comparison: BlazeMeter and NeoLoad charge separately per VU pack on top of their base license. QuickCloud includes your VU allowance in the flat subscription price — no surprise bills mid-project.
Cloud Agnostic by Design
Worker nodes run anywhere — spin up on your preferred cloud, on-prem, or in a hybrid configuration.
Measurable Outcomes
Lower Risk
Detect performance issues early and validate SLA confidence before every deploy.
Faster Delivery
AI generation, HAR import, and zero-install extensions accelerate test creation.
Unlimited Scale
Self-hosted distributed model scales to millions of VUs on demand on your infrastructure.
Better Insights
Named assertions and custom metrics drive data-backed performance decisions.
Lower Cost
No per-VU pricing. Scale with your own infrastructure — no surprise bills mid-project.
Enterprise Ready
Security, compliance, SSO, and audit built in from day one — not sold as add-ons.
Frequently Asked Questions
Also included in Full Platform — $14,999/mo
Performance and cost — two sides of the same coin
Load testing reveals performance bottlenecks; cost optimization reveals the bill they create. Run both from one platform.
Find Your Limits. Fix Them Before Launch.
Schedule a walk-through and see how QuickCloud runs load tests against your actual services before your next deployment.