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getStack.dev vs Langfuse
Short answer: Pick getStack.dev if you want tech popularity analytics; pick Langfuse if you want LLM observability & analytics. getStack.dev is free; Langfuse has a free plan, paid from $29/month.
getStack.devDiscover the most popular technologies and repositories.png?width=96)
LangfuseOpen Source Observability & Analytics for LLM Apps 🕵️♂️Which to pick
Pick getStack.dev if you want…
- Tech popularity analytics
- A free, open-source tool
- Integrations with JavaScript, React or Vue.js (on getStack.dev's list, not Langfuse's)
Pick Langfuse if you want…
- LLM observability & analytics
- Integrations with Go, Java or .NET (on Langfuse's list, not getStack.dev's)
Side by side
- What it is
- getStack.dev:GetStack.dev provides real-time insights into the most popular technologies, libraries, and services across thousands of repositories.
- Langfuse:Langfuse is an open-source platform for tracing, evaluating and monitoring LLM applications and AI agents.
- Best for
- getStack.dev:Tech popularity analytics
- Langfuse:LLM observability & analytics
- Who it’s for
- getStack.dev:Developers, product managers, and tech researchers tracking tech trends
- Langfuse:Developers building, debugging and scaling LLM-based apps and agents.
- Pricing
- getStack.dev:Free
- Langfuse:Freemium
- Starting price
- getStack.dev:Free
- Langfuse:$29/month (Core)
- Free plan or trial
- getStack.dev:Free to use
- Langfuse:Free plan (Hobby)
- Plans
- getStack.dev:—
- Langfuse:Hobby Free · Core $29 per month · Pro $199 per month · Enterprise $2499 per month
- Open source
- getStack.dev:Yes, 426 GitHub stars
- Langfuse:Yes, 35,097 GitHub stars
- Works with
- getStack.dev:JavaScript, TypeScript, Python, React, Vue.js, Next.js, Docker, GitHub Actions
- Langfuse:Python, TypeScript, Go, Java, .NET, Ruby, PHP, Swift
getStack.dev features
- Technology Trend Dashboard. Shows adoption rates for languages, databases, AI models, and more across 50k+ repos.
- Weekly Data Refresh. Insights are updated every week with the latest repository data.
- Category Filters. Browse popularity by categories such as UI frameworks, CI tools, cloud providers, etc.
- Search Capability. Quickly find specific technologies or repositories using the built-in search.
- Newsletter Subscription. Receive curated updates on open-source trends via email.
- Open Data Presentation. All counts and percentages are displayed directly on the site for easy reference.
Langfuse features
- Hierarchical Traces. Capture every LLM call, tool invocation and retrieval step with filters for user, session, cost and latency.
- Prompt Management. Version, fetch, release and cache prompts separately from code with one-click deployments.
- Evaluation Engine. Run LLM-as-judge, heuristic or human-review evaluations on production data or experiments.
- Experiments & Datasets. Define test cases, run experiments and create golden datasets for continuous improvement.
- Dashboards & Alerts. Monitor cost, latency and quality via custom dashboards and automated alerts.
- Human Annotation. Collaborative human-in-the-loop workflows with annotation queues.
- Extensive Integrations. Supports Python, TypeScript, Go, Java, .NET, Ruby, PHP, Swift and 100+ agent frameworks and model providers.
- Self-hosted & Cloud Options. Available as hosted SaaS or self-hosted under MIT license.
getStack.dev vs Langfuse FAQ
What is the difference between getStack.dev and Langfuse?+
Langfuse: Offers observability for LLM apps, unrelated to technology popularity data.
Should I use getStack.dev or Langfuse?+
Pick getStack.dev if you want tech popularity analytics, a free, open-source tool or integrations with JavaScript, React or Vue.js (on getStack.dev's list, not Langfuse's). Pick Langfuse if you want LLM observability & analytics or integrations with Go, Java or .NET (on Langfuse's list, not getStack.dev's).
Is getStack.dev or Langfuse free?+
getStack.dev is free. Langfuse has a free plan (Hobby); paid plans start at $29/month (Core).
Which is cheaper, getStack.dev or Langfuse?+
getStack.dev is free, so it costs less. Langfuse starts at $29/month (Core).
Is getStack.dev or Langfuse open source?+
Yes, both are open source: getStack.dev (specfy/stack-analyser on GitHub, MIT license) and Langfuse (langfuse/langfuse on GitHub).
Do getStack.dev and Langfuse integrate with the same tools?+
Partly. Both list TypeScript and Python. getStack.dev also lists JavaScript, React, Vue.js, Next.js and 2 more; Langfuse also lists Go, Java, .NET, Ruby and 8 more.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.