Vanna 2.0

AI2SQL

AI2SQL is an AI-powered SQL query builder and database assistant that generates, explains, fixes, optimizes, and runs SQL queries on live database schemas. It supports multiple database dialects and includes a governed MCP endpoint for AI agents.

Wren AI

Wren AI is a governed data agent platform that gives both human teams and AI agents a single, consistent way to ask questions across enterprise data. Instead of treating text-to-SQL as a simple tool call, Wren runs GenBI agents in an isolated sandbox where it reasons over versioned context (MDL definitions, knowledge and skills) before generating SQL. The result can be rendered as charts, dashboards or structured JSON, with every query traceable and governed by row- and column-level policies. Wren's key differentiator is the context layer it calls "definitions you own." Teams define metrics, policies and semantic models in git, then share them with both natural-language chat interfaces and AI assistants such as Claude, ChatGPT and Gemini over MCP. Because both paths use the same context and policy layer, answers are consistent and auditable - Wren even fingerprints results so a human and an agent can confirm they are looking at the same answer. On the deployment side, Wren connects to 20+ databases in place with no ETL, and can run in Wren AI Cloud, your VPC, or fully air-gapped. The core context engine is open source, while commercial tiers add agentic dashboard mode, git sync and advanced governance. It is aimed at data teams and product/platform teams who need governed self-service analytics and a way to make AI agents safe to use on internal data.

Chat2DB

Chat2DB is an open-source, AI-powered database client that transforms the way teams work with SQL. Starting with plain-language questions, it generates optimized queries, explains results, and automates data analysis, while its GUI-based workspace handles data editing, sorting, filtering, import/export, and dashboard sharing. It is designed to become the single place where you connect to any database type, eliminating the need to jump between multiple database tools. The AI capabilities go far beyond simple text-to-SQL: a context-aware chatbot works across 10+ LLMs, fixes SQL errors in one click, and uses chain reasoning plus auto-generated charts for deeper analysis. Users can even teach the AI about their database by adding custom business terms in AI column comments, improving query accuracy over time. On the privacy side, Chat2DB emphasizes that data queries are processed locally and that only the database schema is referenced, not the actual data, so sensitive information stays under your control. Built with an Apache 2.0 license, Chat2DB is one of the most popular open-source text-to-SQL tools on GitHub, used by over a million people. It supports relational and non-relational databases, handles large-scale data migration with millions of rows, and offers enterprise-minded security features such as encryption, SSH tunneling, two-factor authentication, least privilege access, and SQL audit. Whether you are a developer, data analyst, business manager, or total SQL beginner, Chat2DB provides a fast, collaborative, and secure way to turn data into decisions.