The browser declined due to the rise of smartphones, improved global internet speeds, and fierce competition from major browsers.
Polypane is a specialized, premium web browser built specifically for web developers and designers
Blue Hawk is a highly specialized, niche web browser focused on maximum security, now considered obsolete and unsafe
The project was eventually abandoned, its website shut down, and it is now considered obsolete and unsafe to use. It is remembered as a charming but unsuccessful experiment in browser design.
Catalyst is a niche, independent web browser for Windows, developed by a single programmer, César Claudio Lóriga González. It has been in active development since around 2016.