Apps similar to Langfuse include AcruxCore, which is free and open source. Other options are Zespan, RapidClaw, AgentInspect and Opik. You can choose from more than 10 Large Language Model (LLM) Tools like Langfuse for the web, self-hosting, Windows, Linux and Mac.
Glassbrain captures every step of your AI app as an interactive visual trace tree. Click any node, swap the input, replay instantly without redeploying. Snapshot mode stores deterministic replays. Live mode hits your actual stack.
India
Your AI bill is growing — but which customers, features, and pricing tiers are driving it? Most dashboards show totals. Totals don't help you decide who to charge more, what to gate, or where to cut.
India
Spendline is the AI spend control layer: per-customer LLM cost attribution, budget enforcement, and a finance-grade month close.
United States
LLMCap is a reverse proxy that enforces real-time, dollar-based spending caps on LLM API calls. When you hit your cap, the next request returns 429 — the token is never consumed and money is never spent.
Canada
Hungary
EU
The agentic analyst for your agents. Your observability tool only tells you what happened. TwoTail figures out why, and what you should change.
DenmarkEU
Proxy that logs every LLM prompt, response and tool call to an encrypted audit trail, and blocks or flags requests carrying PII, secrets or policy violations before they reach the provider.
SwedenEU
Know the tab before you build. PromptSpend estimates, compares, and explains what an AI feature will cost — from a pricing catalog that re-checks itself every morning against vendor sources, so the numbers are never a year out of date. Free, open source, no accounts, no tracking.
United States
Unified gateway centralizing LLM traffic routing, observability, centralized evaluations, prompt versioning, synchronized tracing, and spend controls. Streamlines diagnosis, debugging, and iteration for AI agents across dashboards, fitting solo builders and large teams handling complex workflows.
United States
Corrath is an AI security gateway built for developers and organizations building with Large Language Models.
India
Australia