openserp

PrivateGPT sits between an OpenAI-compatible local inference server and the applications built on top of it. Its API covers messages, file ingestion, citation-backed retrieval, custom tools, database and CSV access, and MCP connectors, following the Claude API as a reference. The included web interface is mainly a demonstrator and debugger; developers are expected to build their own user experience around the API.

Appwrite brings common application backends into one platform so web, mobile, and AI teams can avoid assembling a fragmented stack. It covers identity and data management, file storage, server-side functions, realtime communication, and web hosting. Teams can use the managed cloud or self-host in Docker, Kubernetes, and other container environments, then connect through SDKs or REST, WebSocket, and GraphQL APIs.

Letta offers a CLI and TypeScript Agent SDK for running agents with advanced memory, either fully locally, in its cloud, or against a self-hosted App Server. This repository mainly retains the legacy Letta Server behind the V1 API and SDKs; active development has moved to the Letta Agent repository, and new projects are encouraged to use the newer Agent SDK.

SafeLine runs as a self-hosted reverse proxy in front of web applications, filtering HTTP traffic before it reaches the origin server. Administrators can use it to block common attacks such as SQL injection and XSS, enforce traffic limits, and present bot or password challenges. It requires deployment and routing changes on your own infrastructure; users in mainland China are directed to the Chinese installation path because the international edition may not connect to its cloud services.