Free open source alternative app list of Observability :

Helicone

Key features Open-source LLM observability and monitoring platform built for AI applications. Tracks LLM requests to help developers understand usage patterns and behavior. Monitors costs associated with AI application usage. Measures latency and performance for model calls. Evaluates quality metrics to assess model outputs and application reliability. Platforms: Linux Links: Official website · Source code Pricing: Free self-hosted open-source license (Apache-2.0) with full observability features; cloud managed service available with a free tier.

FreeLinux

OpenLIT

Key features Open-source observability platform purpose-built for LLM applications. Combines monitoring, debugging, and analytics in one integrated tool. Native OpenTelemetry support for standardized telemetry collection. Self-hosted deployment with no usage limits. Licensed under Apache-2.0, so it's free to use and extend. A free, open-source alternative to commercial tools like LangSmith. Platforms Linux, macOS, Windows. Links Official website: https://openlit.ai Source code: https://github.com/openlit/openlit Pricing Free and open-source under Apache-2.0, self-hosted with no usage limits.

FreeWindowsmacOSLinux

OpenLLMetry

Key features Open-source observability tool designed specifically for LLM applications. Provides tracing, metrics, and performance monitoring to help debug and optimize AI workflows. Self-hosted LLM observability with full telemetry capabilities. Licensed under Apache-2.0, enabling free use and modification. Platforms: Windows, macOS, Linux Links Official website: https://www.traceloop.com/openllmetry Source code: https://github.com/openllmetry/openllmetry Pricing: Free. OpenLLMetry is free and open-source under the Apache-2.0 license, offering self-hosted LLM observability with tracing and monitoring capabilities.

FreeWindowsmacOSLinux

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