
Loader.io
k6 Cloud
LoadForge
LoadUIWeb
LoadFocus
Loadium
OctoPerf
Loadster is load testing, stress testing, and site monitoring platform. Your site has a breaking point... load test to find it before your users do, and monitor to react quickly to downtime and other problems.

Insomnia REST
Postman
Hoppscotch
Bruno
HTTPie
k6 Cloud
Visual API testing for HTTP, GraphQL, gRPC, WebSocket, Kafka, and SSE. Workflow designer, load testing, mock server, CLI. AGPL.
Which is more popular?
Website, pricing, platforms and company facts side by side.
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| Website | loadster.com | redfireforge.com |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from the United States · 1 - 9 employees | Startup from the United States · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


Loadster is a cloud-based load testing and synthetic monitoring platform for engineers who want to know how their applications behave under real traffic. Tests run with three types of bots: Protocol Bots for HTTP testing, headless Browser Bots that render full pages and execute JavaScript in real...
RedfireForge is an open-source visual API testing and load-testing workbench for HTTP, GraphQL, gRPC, WebSocket, SSE, and Kafka — all in one UI. Desktop (macOS, Windows, Linux) or browser. Same engine in CI: npm install -g redfireforge-cli Features: - Ad-hoc requests (Postman-style client +...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of RedfireForge yet.
Walkthroughs and reviews on video.
Review Cargobike Citkar Loadster: 4 Räder, 400 kg zulässiges Gesamtgewicht - kann das gut gehen?
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Loadster and RedfireForge.
RedfireForge's answer:
Six API protocols in one UI: HTTP, GraphQL, gRPC, WebSocket, SSE, and Kafka. Most tools cover one or two protocols. RedfireForge covers all six with a shared variable system, a visual workflow designer, load testing, and a built-in mock server — plus a CLI that uses the same engine as the UI. It runs as a desktop app (Tauri) or in the browser. AGPL v3, local-first, no account required.
RedfireForge's answer:
If you work with more than one protocol, you stop switching tools. HTTP, GraphQL, gRPC, WebSocket, SSE, and Kafka share the same collections, environments, and workflow graph. Load tests and mock server are built in — no extra installs. The CLI runs the same tests in CI. Current release is 0.8.x and free under AGPL v3.
RedfireForge's answer:
Backend and platform engineers who test or integrate APIs across multiple protocols. Also QA engineers running load tests and developers who want a local mock server without a separate tool. Anyone tired of keeping four separate clients open for one service.
RedfireForge's answer:
uilt because keeping a REST client, grpcurl, wscat, and a load runner open at the same time was slowing down API work. The goal was one local-first workbench that covers the full protocol stack — HTTP through Kafka — with the same engine in the UI and in CI. Released as AGPL v3 so it can run on private networks without sending data to a cloud service.
RedfireForge's answer:
Frontend: React + TypeScript + Vite - Desktop shell: Tauri 2 (Rust) - CLI: Node.js (npm install -g redfireforge-cli) - Storage: local-first (Tauri FS / IndexedDB / localStorage) - HTTP: native (Tauri) or browser fetch
RedfireForge's answer:
Share your experience with using Loadster and RedfireForge. For example, how are they different and which one is better?
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