Open Source Alternatives to Sierra

An AI agent platform that enables companies to build and deploy conversational agents for customer experience. The software allows users to create multilingual and multichannel agents using SOPs, transcripts, or plain English descriptions via a tool called Ghostwriter. It supports deployment across chat, SMS, WhatsApp, email, voice, and ChatGPT. The platform includes an Agent Data Platform for managing customer memory and integrating structured data from warehouses, as well as observability tools for analyzing performance through experiments and monitors. It is designed for brands to personalize customer interactions and automate workflows based on real-world signals. The system provides capabilities for proactive engagement and multivariate testing to optimize conversation design and agent performance. It is deployed as a centralized operating system for managing the entire lifecycle of AI agents from initial build to scaling.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to Sierra give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 1 open source alternative to Sierra. The most popular is Parlant. It uses the Apache-2.0 license and ships an official Docker image.