Nightly builds are a good thing, they provide immediate feedback to developers if they broke the build. Having a nightly build means that the software stable and is likely to build for new users. Software that is not built regularly is difficult to release. Developed by Mozilla
License: Open Source
Firefox Nightly Build is designed for users who want to test and explore the latest features, albeit with a higher risk of instability. In contrast, Firefox Developer Edition offers a more stable environment with developer tools, making it suitable for web developers who want a reliable platform for testing without the unpredictability of the Nightly version.