This is a real 133MHz BeBox running otherwise stock BeOS R5, surfing Hacker News and Lobste.rs using a modified, bug-fixed NetPositive wired to offload encryption to an onboard copy of Crypto Ancienne (see my notes on the BeOS port). NetPositive is the only known browser on the PowerPC ports of BeOS — it’s probably possible to compile Lynx 2.8.x with BeOS CodeWarrior, but I’ve only seen it built for Intel, and Mozilla and Opera were definitely Intel/BONE-only. With hacks for self-hosted TLS bolted on, NetPositive’s not fast but it works, and supports up to TLS 1.2 currently due to BeOS stack limitations.
This is a modified version of the latest official NetPositive browser from Be, updated to somewhat work on the modern web, specifically for PowerPC machines like the BeBox and BeOS-compatible PowerPC Macs. It can load various modern sites, but as the author notes, OSNews refuses to load (we used to have a complicated system of recognising individual obscure platforms and browsers so we could serve them a limited version of the site, but that became increasingly difficult and time-consuming to maintain, for effectively no benefit other than bragging rights).
You can download and run it using the instructions in the post, and more improvements are being considered. Absolutely excellent work.