Speedscale

Speedscale is a hybrid API and load-testing platform built around captured production traffic. It suits cloud-native teams that want realistic Kubernetes replay, traffic-derived load tests, or local API mocks. It is a weaker fit for browser testing or teams that need full mTLS support.

Overview

Speedscale captures and replays production traffic in Kubernetes to validate application changes against real request patterns. It also turns captured traffic into load tests and virtualizes flaky or third-party dependencies with production-realistic responses. That combination is most useful when synthetic tests miss the behavior a team needs to exercise; teams without usable production traffic may get less from its core approach.

The hybrid deployment model offers Speedscale cloud or a full-stack deployment inside a customer's AWS, GCP, or Azure account. With BYOC, traffic stays inside that VPC, which suits organizations that want their test traffic in their own cloud environment. Speedscale offers DLP redaction and says sensitive data can be deleted retroactively after leakage. It has successfully completed an AICPA SOC 2 Type I audit.

Key features

Replay, mocking, and load

Traffic replay lets teams validate changes using captured Kubernetes traffic. Virtualized dependencies can reduce reliance on flaky or third-party services during testing, while preserving realistic responses. Captured traffic can also generate load tests that track latency and throughput against budgets. Stress testing and distributed load are supported, so the product extends beyond local API checks to workload testing.

Integrations and protocol coverage

Speedscale's load-testing integrations include GitHub, GitLab, Jenkins, Azure DevOps, Google Cloud Deploy, AWS CodeBuild, Bitbucket Pipelines, TeamCity, and CircleCI. Its features page also names CI/CD, GitHub Actions, k6, and Postman. Documentation describes full support for HTTP, gRPC, Kafka, RabbitMQ, PostgreSQL, and many other protocols, databases, and APIs; IMAP is capture-only and mTLS support is partial. Those exceptions matter for teams whose test paths depend on either one.

Local development

Free proxymock supports local API mocking and testing, basic traffic recording, and unlimited local mocking. Native command-line installation options cover macOS, Linux, and Windows. It is a practical starting point for individual local workflows, but it does not include the advanced replay, CI/CD integration, team collaboration, or cloud storage in Pro.

Pricing

Speedscale uses a freemium model, with a free trial also offered. The Free (proxymock) plan costs nothing and includes unlimited local mocking, basic traffic recording, community support, a desktop CLI tool, and local development setup. It is best for local mocking and basic recording; the stated plan does not include the cloud-oriented team features.

Pro (Speedscale cloud) has custom pricing. It adds advanced traffic replay, CI/CD integration, priority email support, team collaboration and a dashboard, and cloud multi-tenant storage.

Enterprise also has custom pricing. It includes custom deployment, dedicated support and SLAs, SSO and enterprise controls, a BYOC option, and a cloud dedicated tenant. That is the relevant tier for organizations seeking dedicated deployment and support, while smaller teams may find the free local plan sufficient if they do not need those controls.

Platforms

Speedscale supports API, Linux, macOS, self-hosted, web, and Windows environments. Its deployment model is hybrid. Proxymock's native CLI installation options are for macOS, Linux, and Windows; the full-stack BYOC deployment runs in a customer's AWS, GCP, or Azure account.

Who it's for

Speedscale is a strong match for cloud-native teams that want to reproduce production behavior in Kubernetes, derive load tests from recorded traffic, or isolate tests from unreliable dependencies. It also fits teams that need a self-hosted option in their own cloud account. It is not the right choice when browser-based testing is central, and teams depending on mTLS should account for partial support.

Pros and cons

• Production-based validation: Replay and traffic-derived load tests let teams exercise real request patterns rather than relying only on synthetic scenarios.
• Useful dependency isolation: Virtualized services can stand in for flaky or third-party dependencies with realistic responses.
• Deployment choice: Teams can use the cloud offering or run the full stack in their AWS, GCP, or Azure account, with BYOC traffic staying inside that VPC.
• Free local entry point: Proxymock provides unlimited local mocking and basic recording at no cost, with CLI options for three major desktop operating systems.
• No browser testing: Teams testing browser flows need another tool.
• Protocol caveats: IMAP capture is limited to capture-only use, and mTLS support is partial.
• Paid-tier pricing: Pro and Enterprise use custom pricing, so teams cannot compare their costs from the stated plan prices.

Alternatives

If you want a performance-testing category overview, browse Performance Testing Software. For a named alternative, Artillery offers a Team plan at $199 a month with 1,000 reports per month, six months of data retention, eight team members, and up to 25 workers per distributed test; choose it if those published team limits suit your workload.

Fortio is a free, open-source alternative. Locust is free and open source under the MIT license, while Taurus is free and open source under Apache 2.0. Those are options for readers who want open-source tools, though their supplied details do not establish a production-traffic replay approach like Speedscale's.

Tricentis Testim is the alternative to consider for mobile and web testing: its free plan allows up to 1,000 runs per month, and paid plans are customized to mobile and web testing needs. Apache JMeter is a free, open-source option that requires Java 8 or later. HammerDB is a free, open-source database benchmarking tool with Windows and Linux builds and a Docker image. Tsung is free under the GNU General Public License version 2.

Verdict

Choose Speedscale if your team wants to validate cloud-native changes with captured production traffic, build load tests from that traffic, or run the full stack in your own AWS, GCP, or Azure account. Its free proxymock plan is a useful no-cost fit for local mocking and basic recording. Look elsewhere if browser-based testing is required, or if your workflows depend on complete mTLS support.