Open Source Alternatives to Crestum
19 open source Conversational AI options similar to Crestum, ranked by named competitors first, sector overlap, and our 0-100 AI-readiness score. Every company listed publishes its source: each one carries an open source sector tag and a public GitHub repository.
Vocode50Open SourceSan Francisco, United States$3.8MOpen-source library for building hyper-realistic voice agents and conversational AI applications.
Open source · Self-hostable
Rasa49Conversational AIBerlin, Germany$13.0MOpen-source conversational AI platform for building custom chatbots and virtual assistants.
Open source · Self-hostable
Feast AI54MLOpsSan Francisco, United StatesAn open-source feature store for managing and serving data for AI/ML models in production.
Open source · Self-hostable
LiteLLM53Foundation ModelSan Francisco, United StatesAn open-source Python library providing a unified interface for interacting with various LLM providers.
Open source · Self-hostable
RelAI51Agentic AISan Francisco, United States$6.9MAn open-source platform for building, simulating, evaluating, and optimizing reliable AI agents.
Open source · Self-hostable
Inconvo25Agentic AIUnknown, UnknownInconvo is an open-source platform for building data agents on production data with safe queries, permissions, and structured outputs.
Open source · Self-hostable
Langchain-Chatchat10Open SourceOpen-source, offline-deployable RAG and Agent application built on LangChain for local knowledge base Q&A.
Open source · Self-hostable
- Littlebat9Open Source
Open-source AI tools for iOS and AWS, allowing self-hosting and data privacy.
Open source
DocsGPT8Open SourceOpen-source AI platform for securely deploying intelligent agents, private enterprise search, and complex document workflows on an organization's own data.
Open source · Self-hostable
- Arxivexplore6Foundation Model
A free, open-source Wolfram Language paclet for word statistics, TeX and citations dissection, neural networks, and LLM automated reports over arXiv articles.
Open source
Airweave61Agentic AISan Francisco, United States$6.0MOpen-source tool to transform application data into accessible knowledge for AI agents.
Open source · Self-hostable
Mem056Agentic AISan Francisco, United States$23.9MPersistent memory layer for AI agents and applications.
Open source · Self-hostable
GitHits45Developer ToolsHelsinki, Finland$1.5MThe Google of code search for open-source.
Open source · Self-hostable
PromptQL45Artificial IntelligenceSan Francisco, United StatesAn AI-native workspace designed to turn team interactions into actionable, proprietary data for agentic workflows.
Open source · Self-hostable
Keep45EnterpriseSan Francisco, United States$2.5MOpen-source alert management platform using AI to reduce noise and improve alert actionability for engineers.
Open source · Self-hostable
LlamaIndex Inc.39Foundation ModelSan Francisco, United StatesCompany
Open source · Self-hostable
Langflow32Agentic AILisbon, PortugalLow-code platform for building, iterating, and deploying AI applications, especially RAG and multi-agent systems.
Open source · Self-hostable
- Firmgate7Enterprise Software
Australian-owned, sovereign-built, open-source self-hosted intranet with AI-enabled enterprise modules.
Open source
Qdrant71Vector DatabaseBerlin, Germany$87.5MHigh-performance, open-source vector search engine built in Rust for production-grade AI and machine learning workloads.
Open source · Self-hostable