Langtail records 4,213 monthly visits with +10% month-over-month growth and Freemium, Paid pricing. testRigor records 105,865 monthly visits with -2.7% growth and Free Trial, Contact for Pricing, Free pricing.
Prompt management, evaluation, and guardrails for production LLM apps
Write end-to-end test automation in plain English, no code required
| Dimension / Metric | | |
|---|---|---|
| Official Domain | langtail.com | testrigor.com |
| Pricing Model | Freemium, Paid | Free Trial, Contact for Pricing, Free |
| Monthly Visits | 4.21K (4,213) | 105.87K (105,865) |
| MoM Traffic Delta | +382 (+10%) | -2.95K (-2.7%) |
| Primary Market & Share | 🇺🇸 United States (51.2%) | 🇺🇸 United States (24.9%) |
| Direct Visits / mo | 1.68K | 55.49K |
| User Rating | 4.4 | 4.5 |
| Supported Platforms | Website | Website |
Prompt management, evaluation, and guardrails for production LLM apps
Build, test, and version prompts in a table-based editor that anyone comfortable with spreadsheets can use.
Add natural-language assertions, pattern matching, or custom code checks and run them over datasets to catch regressions.
Trace every request and response, inspect latency and cost, and diagnose why an LLM answered the way it did.
One-click AI Firewall blocks prompt injection, denial-of-service attempts, and information leaks with customisable content filtering and alerts.
Write end-to-end test automation in plain English, no code required
Build and maintain end-to-end tests using free-flowing plain English. testRigor interprets your instructions exactly as written and executes them, with no coding required.
Tests adapt to UI changes automatically, so you spend far less time fixing broken selectors and scripts. Customers report near-zero maintenance versus Selenium and Appium.
Cover web, iOS and Android mobile, native Windows desktop, API, email, SMS, phone calls, 2FA, and mainframe testing from a single tool.
Generate tests directly in testRigor or through Claude Code using MCP and Skills, and import existing manual test cases to get started quickly.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
Free / Open-sourceHigh-efficiency open-weight and hosted reasoning AI powered by DeepSeek-V4 and R1 at ultra-low token costs.
GenAI-native end-to-end QA agent that plans, writes and heals tests in plain language
Ship with confidence: one system of record for manual, automated, and CI tests
AI-augmented quality platform for web, mobile, API and desktop testing
Free / Open-sourceBuild, simulate, evaluate and monitor self-improving AI agents
Free / Open-sourceBuild, simulate, evaluate and monitor self-improving AI agents
Free / Open-sourceEvaluate, monitor, and govern your AI applications in production
Free / Open-sourceEvaluate, monitor, and govern your AI applications in production
Agentic end-to-end testing that writes, runs and heals your test suite
Agentic end-to-end testing that writes, runs and heals your test suite
The collaboration layer for AI engineering teams
The collaboration layer for AI engineering teams
Standardize LLM evaluation, observability, and red teaming across your whole org
Standardize LLM evaluation, observability, and red teaming across your whole org
Agentic AI QA engineer for web, iOS, and Android testing
Agentic AI QA engineer for web, iOS, and Android testing
AI testing platform for the entire software testing lifecycle
AI testing platform for the entire software testing lifecycle
Free / Open-sourceOpen-source workspace for building, evaluating and shipping AI agents
Free / Open-sourceOpen-source workspace for building, evaluating and shipping AI agents
