The UltraEdit web site says UltraEdit has an English dictionary for spelling. EditPlus does not say so I presume it has only an American dictionary.
The UltraEdit web site lists a PHP4 editing file. If it can be kept that up to date, that is a real advantage.
Neither site mentions Linux so I sent both an email asking the big question. I will move from NT to Linux as soon as I can replace a few apps with Linux equivalents.
Linux is a big issue. I use 20-30 apps every day. I am not going to try to relearn every one in one big hit so each month I replace one application with a brand that runs across both NT and Linux. Even though Netscape 4.76 mail is rubbish, it is currently the most viable choice for NT and Linux.
So I need an editor that runs on Linux or will have a Linux version within 6 months. Most times when I ask a developer about their Linux version, they say they can move as soon as their development software is ported to Linux. bad luck if they use a dead end product.