The 10 Best Letta Alternatives in 2026

The open platform for ML models, datasets, and applications

Ollama provides local and cloud access to open-source AI models through a simple command-line interface and API. Built for developers who want to run

ML experiment tracking, model management, and collaboration

llama.cpp enables developers to run large language models locally in C/C++ without requiring GPUs or cloud services. Built for researchers and enginee

High-throughput LLM serving engine with PagedAttention

Open WebUI provides a user-friendly web interface for interacting with AI models from Ollama, OpenAI, and other providers. It's designed for developer

Open-source LLM app development platform with visual workflow builder

Unified API for accessing any LLM model from one endpoint

Data framework for connecting LLMs to external data sources

LangChain provides an end-to-end platform for AI teams to build, test, and deploy AI agents with observability tracing, automated evaluation tools, an