Alternatives to OnWatch

Free open-source AI usage tracking & analytics for developers

Track, forecast, and optimize AI spend across OpenAI, Google AI, Azure, and Bedrock.

Open-source AI observability for agent tracing, LLM-as-a-judge evals, and coding agent cost tracking

Free, MIT-licensed desktop widget that shows token usage, spend, and quota limits across 29+ AI coding tools on your own machine.

Free open-source universal database tool with AI Chat for SQL tasks

Free and open-source visualizer for neural network and machine learning models.

Open-source Python library to track real-time carbon footprint of GenAI API calls.

Open-source LLM observability and evals for building reliable agents

Open-source tracing, evaluation, and prompt iteration for AI agents — self-host it on your own infrastructure with no per-span bill.

Open-source LLM observability for tracing, evaluating, and optimizing AI agents.

Open-source OpenTelemetry observability for Python LLM apps

Open-source, OpenTelemetry-native agent evaluation and tracing that finds where your agent fails.

Open source platform to debug, evaluate, monitor, and optimize AI agents and ML models.

Open-source AI observability via whylogs and langkit for privacy-preserving logging and LLM monitoring

Open-source workspace to build, evaluate, and deploy AI agents through chat

Open-source framework to replace vibe checks with reproducible, LLM-driven evaluation loops for RAG and agents.

Open-source AI evaluation and observability for LLMs, RAG, agents, and predictive ML models.

Neptune.ai is real-time experiment tracking for frontier AI training teams — now owned by OpenAI

Helicone is an AI gateway and LLM observability platform for routing, debugging, and cost-tracking AI apps across 100+ models.

Open-source distributed SQL database with vector search, ACID transactions, and HTAP for AI agent workloads.

Open-source LLM & VLM evaluation platform for standardized benchmarking

Open-source real-time SQL analytics, full-text search, and vector database for AI.

Fast open-source columnar OLAP database for petabyte-scale real-time analytics

Open-source LLM observability and prompt management for AI engineering teams.

Open-source lakehouse format for multimodal AI with hybrid search.

Free, MIT-licensed local dashboard that reads your AI coding agents' log files to show tokens, cost, and traces — no SDK or API key.

Open-source workflow orchestration for data, AI, and infrastructure pipelines

Open-source, OpenTelemetry-native LLM observability and AI engineering platform for teams.

Open-source usage-based billing with real-time credit ledgers on Stripe.

Open-source agent observability that catches failures and helps fix them.