WireMock
Beeceptor
Mockoon
MockServer
Postman
QuickMocker
SOAP/REST Mock Service
Webhook.site
Langfuse
Helicone AI
LangSmith
LangChain
Openlayer
Braintrust.dev
Portkey
LastMile AI
Langfuse is an open-source LLM engineering platform designed to empower developers by providing insights into user interactions with their LLM applications. We offer tools that help developers understand usage patterns, diagnose issues, and improve application performance based on real user data. By integrating seamlessly into existing workflows, Langfuse streamlines the process of monitoring, debugging, and optimizing LLM applications. Our platform's robust documentation and active community support make it easy for developers to leverage Langfuse for enhancing their LLM projects efficiently. Whether you're troubleshooting interactions or iterating on new features, Langfuse is committed to simplifying your LLM development journey.
WireMock
LangfuseLangfuse might be a bit more popular than WireMock. We know about 28 links to it since March 2021 and only 23 links to WireMock. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
On a new project, I decided to re-evaluate my options, and remembered a tool that seems to be the next best thing for the job: Wiremock. - Source: dev.to / about 1 year ago
I'm pretty sure Wiremock (https://wiremock.org) lets you configure both the response body and headers. - Source: Hacker News / about 1 year ago
Mocha is a lib inspired by nock and WireMock. It allows checking if the mock was called or not, which is a nice feature. Like httptest, it also it don't automatically intercept the requests. - Source: dev.to / over 1 year ago
For testing third-party API calls, you can use libraries such as WireMock or Nock. These tools allow you to simulate HTTP requests and responses, helping you test how your application behaves when interacting with an external service. For example, you can mock successful responses, simulate errors, or test timeouts, all without making real HTTP requests. - Source: dev.to / over 1 year ago
WireMock is a versatile, open-source platform for API mocking, offering powerful simulation features for both HTTP and HTTPS protocols. Itโs highly customizable and is especially well-suited for complex use cases, such as testing microservices architectures and handling advanced behaviors. - Source: dev.to / over 1 year ago
In this project we will build a Python banking assistant agent using Strands Agents and make it observable and continuously evaluated using Langfuse โ step by step. - Source: dev.to / 18 days ago
Langfuse is the open-source standard for LLM observability. It traces every LLM interaction โ prompts, completions, latency, token usage, cost โ and provides the tooling to debug, evaluate, and optimize LLM applications in production. Think of it as "Datadog for LLM calls" with a focus on prompt engineering workflows. - Source: dev.to / about 1 month ago
You're monitoring production traffic. You need Langfuse / Phoenix / Helicone / Braintrust for that. Online eval is a different problem class: implicit feedback, drift detection, hallucination rates on your data, not on HellaSwag. - Source: dev.to / about 2 months ago
Gateway or proxy attribution. A reverse proxy in front of the model-provider API records the request, computes the cost, and exposes per-customer breakdowns. Open-source options include Helicone, LiteLLM, Langfuse, and OpenLLMetry. Hosted equivalents serve as the AI cost observability layer for teams that want centralized visibility: LangSmith, Datadog LLM Observability, Arize Phoenix. Adds a network hop.... - Source: dev.to / about 2 months ago
Same approach works with Langfuse, Phoenix, Braintrust, or your existing OTel pipeline โ the metadata.userId pattern is the universal part. - Source: dev.to / about 2 months ago
Beeceptor - Unblock yourself from API dependencies, and build & integrate with APIs fast. Beeceptor helps you build a mock Rest API in a few seconds.
Helicone AI - Open-source LLM Observability for Developers
Mockoon - Mockoon is the easiest and quickest way to design and run mock REST APIs. No remote deployment, no account required, free and open-source.
LangSmith - Build and deploy LLM applications with confidence
MockServer - Easy mocking of any system you integrate with via HTTP or HTTPS.
LangChain - Framework for building applications with LLMs through composability