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What is Spitfire?

Spitfire is a robust self-hosted solution tailored for load testing and performance monitoring, specifically addressing the requirements of DevOps, QA, and SRE teams. It runs efficiently on customer-managed infrastructures through Docker or Kubernetes and includes remote runners placed in diverse locations, which initiate connections without the need for inbound ports. Users can effortlessly create tests using a browser-based interface, with no scripting needed, or by importing from formats such as OpenAPI, Postman, HAR, k6, and JMeter. Each test can incorporate a variety of protocols and technologies, such as HTTP, gRPC, WebSocket, Kafka, MQTT, SQL, and actual browser interactions. Tests can serve dual purposes: functioning as low-load production monitors that execute every 1 to 60 minutes with capabilities like drift detection, SLOs, error budgets, and a status page, or as staged distributed load tests aimed at uncovering performance bottlenecks and critical breaking points. Moreover, insights derived from OpenTelemetry and alerts from various monitoring solutions such as Datadog, New Relic, Dynatrace, Zabbix, and Instana can enhance the analysis of performance challenges. A/B testing comparisons can also serve as checkpoints for CI releases, ensuring a high standard of quality control. In addition, Spitfire comes equipped with vital features like a production-write guard, SSO/SCIM integration, detailed audit logging, and offline licensing options suitable for installations in air-gapped settings. An appealing aspect of Spitfire is its free edition, which is available indefinitely, making it a practical choice for teams aiming to improve their performance testing capabilities without incurring costs. This unique offering positions Spitfire as a valuable asset for organizations seeking to optimize their performance testing processes efficiently.

What is Loadster?

Loadster helps engineering and SRE teams protect uptime and customer experience without standing up their own testing infrastructure. The platform combines on-demand load testing with continuous synthetic monitoring, so teams validate capacity before launches and catch problems in production between them. Load tests run from cloud regions and simulate users at any scale — from a few hundred to many thousands of concurrent virtual users. HTTP, real browser, and Playwright-based bots cover the range from API throughput checks to full end-to-end user journeys. Reports break down response times, error rates, page rendering metrics, and per-user playback, then save into a shared history that stakeholders can review together. The same scripts can be repurposed as 24/7 monitors that run continuously from multiple regions. Incidents flow through configurable notification policies to email, SMS, voice, or integrations like Slack and PagerDuty, and maintenance windows pause monitoring during planned work. Status pages give external audiences a clear view of service health. Loadster is consumption-priced through Loadster Fuel, with free units to evaluate the platform and no credit card required to sign up. Engineering, QA, and SRE teams use it to validate releases, catch regressions before users do, and respond faster when something breaks.

Media

Media

Integrations Supported

Slack
Datadog
Dynatrace
GitHub Actions
GitLab
IBM Instana
Jaeger
Jenkins
Jira
Linear
Microsoft Teams
New Relic
OpenTelemetry
Prometheus
Redmine
ServiceNow
YouTrack
Zabbix

Integrations Supported

Slack
Opsgenie
PagerDuty

API Availability

Has API

API Availability

Pricing Information

$1,485/year
The Free edition has no expiration date. The Starter plan costs $1,485/year, including taxes, and is paid once without automatic renewal. Higher-tier plans and optional add-ons are also available.
Free Version

Pricing Information

$77
Monthly and pay-as-you-go pricing with Loadster Fuel. Specialized monitoring and custom plans are available on request.
Free Trial Offered?

Supported Platforms

Windows
Mac
On-Prem
Linux

Supported Platforms

SaaS
Windows
Mac
On-Prem
Linux

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub
Online Training

Company Facts

Organization Name

Albiferro Software & System

Date Founded

2026

Company Location

Turkey

Company Website

usespitfire.com

Company Facts

Organization Name

Loadster

Date Founded

2017

Company Location

United States

Company Website

loadster.com

Categories and Features

Load Testing

Not specified

Performance Testing

Not specified

Categories and Features

Load Testing

API Load Testing
Load Test Performance Reporting
Multilocation Load Testing
Multiple Protocol Support
Test Script Customization
Web Application Testing

Performance Testing

API Testing
Benchmarking
Debugging
Historical Reporting
Load Testing
Parallel Testing
Regression Testing
UI Testing
Web Testing

Software Testing

Automated Testing
Reporting / Analytics

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