Observability for AI/LLM apps built on OpenTelemetry. Traces model calls and tool steps with tokens, cost, latency and errors; send OTLP over HTTP from any language or use the TypeScript SDKs. Free plan includes 10,000 spans/month, 7-day retention, 1 project and 2 seats, no credit card.
TOOLS · FREE TIER
Observability for AI/LLM apps built on OpenTelemetry. Traces model calls and tool steps with tokens, cost, latency and errors; send OTLP over HTTP from any language or use the TypeScript SDKs. Free plan includes 10,000 spans/month, 7-day retention, 1 project and 2 seats, no credit card.
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TOOLS · TOOL
The Unsure Calculator is an online tool that lets you calculate with numbers you’re not sure about.
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TOOLS · LEARNING
Interactive notes for algebra-based physics with explorable explanations.
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TOOLS · TOOL
Free web app that helps fantasy writers, game masters, and cartographers create and edit fantasy maps
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TOOLS · MAC APP
Open-source, model-agnostic macOS agent for verified code, documents, slides, and computer actions. !Open-Source SoftwareOSS Icon !FreewareFreeware Icon
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TOOLS · TYPOGRAPHY
Every free font worth using, previewed with your own text before you download.
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TOOLS · MAC APP
Local-first clipboard history manager with search, tags, and image support. !Open-Source SoftwareOSS Icon !FreewareFreeware Icon !Native AppNative Icon
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