Autumn's Descent
Aleixa
Under Midnight
Null Factor
Time's Arrow
Torn Skin
Audio Paradox
Cult of Jester
Voxis (like the whole Circle of Dust/Celldweller thing, now operates as Blue Stahli)
Concerning Autumn's Descent, they even just released a new album consisting of re-recorded material from
Prelude - their 'debut', I guess, EP - and
Deadletters - their first album, along with some secondary material. Honestly, I prefer the original versions, but as Deadletters has been out of print for years and Prelude is even more impossible to find, it's probably as good as the new fans will get*. "Disillusioned", "Burden", "So Have I", and the title track are definite highlights on
Deadletters; "Disillusioned" was actually featured briefly in a scene and the soundtrack of
one of ABC Family's teen movies (under its alternate radio title, "Through My Eyes" - it's also a shorter edit than on
Deadletters), which I couldn't really believe, but hey.
*although there are some remaining copies of
Deadletters the band found and put up on CDBaby; you can also find the posting on Amazon's Marketplace. I got my copy through ChristianDiscs.com in 2007 (which now seems to have gone out of business or something), before that batch of CDs were found. I missed the opportunity to buy the album through iTunes, as it was pulled from there sometime in '06 I believe, although I had bought one of the tracks.
You could probably even count some of Dead Artist Syndrome's and The Awakening's output as well, even though both are primarily Goth bands. With Dead Artist Syndrome, you have songs like "Obsexxed" and "Christian America" that have some big industrial overtones, with The Awakening it's more subtle ("One More Crucifixion", "The Sedative", "Arrow", and "Descent" are perhaps more obvious about that, though).
There's also Goth-Industrial (Darkwave, elektro-goth, take your pick of labels, really) and Dark Synthpop acts worth mentioning also. The Last Dance (especially the version of "Flesh" and "Mystery" from
Staring At The Sky, "Nightmares", "Once Beautiful", "Lost", "Parade", and their cover of "Dead Man's Party", amongst many others), ThouShaltNot ("The Ocean Is Your Voice", "G.L.M.", "100 Generations", "If I Only Were A Goth"), Monolithic ("The Sound Of Tears"), The Echoing Green, etc.
All those bands can be heard on
ChristianIndustrial.net's streaming radio station, and
Flaming Fish Music has several of those up for download in their Releases section as well (and yes, that Cult of Jester CD has a cover of The Sisters Of Mercy's "Lucretia My Reflection" - quite a solid cover too, IMO).
On the topic of Skillet, seconding the
Alien Youth recommendation.
Invincible (their third album, the one immediately preceding
Alien Youth) is good too, but it's not nearly as abrasive. The two best tracks on it IMO are probably "You Take My Rights Away" and "Come On To The Future" - neither are anywhere as heavy as the stuff on
Alien Youth, but it's still energetic. The same generally holds true to the stuff on
Hey You, I Love Your Soul (their second album), like "Locked In A Cage" and "Deeper".