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 a testing version that offers the latest features and optimizations, making it suitable for developers and testers. In contrast, Cyberfox is a performance-optimized browser based on Firefox, targeting users looking for a customizable experience with better performance on older systems.