I'd love this for Sparc/Solaris. I know IE5 was propietary, but I would test is with educational purposes (and a perfect example on how libre code can still run under modern Unixen without too many issues unlike IE5)

As libre examples:

- Arena browser

- MosaicCK

- XGopher/Xrn

- VRGopher

- XNedit, even with UTF8 support

- Most window managers

- Most libre Motif applications (and tons of them are really nice)

- Libred Xephem. Yep, I know, Celestia, KSTars, planetaries with even Vulkan support... but for astronomic data, Xephem has zillions of details.

You would say that these tools has no value, until you can quickly edit some EPS file from LaTeX under XFig.