Open Source Projects tagged "Prompt Engineering"
A curated collection of the best open source projects tagged "Prompt Engineering". Each listing includes a website screenshot along with a detailed review of its features.
Open source LLM engineering platform for AI-powered applications
Stars
Stars growing over the last 30 days36,266Last commit
7 hours agoLicense
MIT
Langfuse provides tracing, evaluations, prompt management, and analytics to debug and improve LLM applications.
Open Source Alternative to:
Complete production stack for AI teams
Stars
13,259Last commit
5 months agoLicense
MIT
Comprehensive AI platform with gateway, observability, guardrails, and prompt management. Access 1,600+ LLMs via unified API with enterprise-grade security.
Open Source Alternative to:
Open-source LLM tracing & evaluation for AI optimization
Stars
Stars growing over the last 30 days11,970Last commit
5 hours agoLicense
Elastic-2.0
Open-source platform for LLM tracing, evaluation, and optimization. Features automatic instrumentation, prompt playground, and real-time AI application monitoring.
Open Source Alternative to:
Build reliable AI apps with comprehensive observability
Stars
6,235Last commit
4 days agoLicense
Apache-2.0
Open-source platform for logging, monitoring, and debugging LLM applications. Route, debug, and analyze AI apps with comprehensive observability tools.
Open Source Alternative to:
Build, automate, and improve AI agents with your team
Stars
4,856Last commit
5 hours agoLicense
MIT
Open-source workspace for building and running AI agents: chat-driven development, scheduling, human-in-the-loop approvals, versioning, and tracing. Self-host or use the cloud.
Open Source Alternative to:
Simulation-based testing and evaluation for AI agents
Stars
4,990Last commit
6 hours agoLicense
Apache-2.0
Tests AI agents through multi-turn simulations, LLM-based scoring, and production tracing so teams can ship reliable agents with confidence.
Open Source Alternative to:
Sent – Messaging Infrastructure for Developers. One API for SMS, WhatsApp, and RCS across 190+ countries.
Sent