News Open Source 'Eclipse Theia IDE' Exits Beta to Challenge Visual Studio Code Some seven years in the making, the Eclipse Foundation's Theia IDE project is now generally available, emerging from beta to challenge Microsoft's similar Visual Studio Code editor, with which it shares much tech. The Eclipse Theia IDE, part of the Eclipse Cloud DevTools ecosystem, primarily differs from VS Code in licensing and governance. Open-source champion Eclipse Foundation calls it a "true open-source alternat...