I'm going to share the most useful applications I have on my W8 and would like you to share more must have apps to add to this list.
So lets begin..
Root browser lite: The best free root explorer on the store..
Titanium backup: Ultimate backup app with a rating of 4.8 stars..(recommended)
Rom Toolbox Pro:
The ultimate root app..(recommended)
Power Toggles:The ultimate power control widget with many options.
MX Player:The best media player which is able to play all kinds of media files.(recommended)
QuickPic:ICS styled gallery.Better than gallery 3d.
XDA developers app:View forum easily with this app.
Dropbox:Cloud file storage..
Airdroid:Control your phone from PC.
Wave control:Control your phone with a wave of your hand.
Quickoffice Pro: Mobilize your office.
Boat browser mini:The fastest and best browser for our X8.(recommended)
Barcode scanner:Makes your device NEXUS 7..
Chainfire 3d:Take control of your GPU.(recommended for gamers).
Swapper 2:Swap easily with this app.
Camera zoom fx:Camera which actually zooms.
ADAway:Drive your ads away.
PowerAmp music player:Best music player available there..
PICspeed HD wallpapers.
Rotation locker:It locks your screen to either Portrait or Landscape. Really useful on some apps.
Battery caliberator:Calibrate your phone battery with this app.
Theme chooser wallpapers:Used to display wallpapers your theme has.
AI keyboard:A good keyboard with different themes.
Handy calc:Ultimate calculator for GEEKS..(like me..)
SetCPU:CPU tweaking app.FREE FOR XDA USERS!!!
Mango:Manga reader app.
Launcher7:Windows 7 styled launcher.
Nemus launcher:A very smooth launcher with various customization.(recommended)
Script manager:Powerful application to execute scripts like Supercharger.
Whatsapp messenger:Used to send free sms via wifi or internet.
Google Play music:ICS styled awesome music app.(recommended)
Google translate:Translate text between more than 64 languages.
Google Goggles:Search by taking a picture.
Google gesture search:Search on your phone by drawing gestures.
Ringdroid:Create ringtones by trimming songs.
Link2SD:Move your apps to the ext partition with this app.
LCD density modder:Change the lcd density of your phone to apply HDPI themes.
Google sky maps:App for those who are intrested in astronomy.
Chrome marks lite:Access your Chrome bookmarks from your device.
Avast mobile security:The best free antivirus app with mobile tracker and loads of features.(highly recommended)
Z Archiver:Manage your archives with this app.(recommended)
Pattern:Great gallery of wallpapers.
MyBoy GBA emulator:
The fastest free GBA emulator for playing GBA roms.
Kingsoft office:Kingsoft Office is the only mobile Office with full-features and too at free of cost.(recommended)
Solid explorer:Solid Explorer is a file manager with two independent panels which brings to you a new file browsing experience.
Critical strike:Counter strike now on android..
Utter:The ultimate voice controlled personal assistant.(recommended)
Antutu benchmark:AnTuTu Benchmark is Android Benchmarking tool.
Faster phone boosts:This little app will increase your download speed by internet and WiFi. It can also increase speed of SD card. It optimalizes RAM and CPU usage, so your phone will be much faster!
Shazam:Hear a song you don't know? Shazam identifies it instantly.
TuneIn Radio:TuneIn is a free way to listen to music, sports and news from every corner of the earth, with over 70,000 radio stations and 2 million on-demand programs.
Aldiko book reader:Read and download thousands of eBooks right on your phone.
PicSay pro:Photo editor with all the tools you need to spice up your pictures.(There is a lite version too)
Tasker:Does everything.Automate everything from settings to photos, SMS to speech.
App2Zip:Backup your apps directly to flashable zip file, build your own update.zip!
IF YOU'VE FOUND THIS POST, OR ANY OF THESE APPS USEFUL, BE SURE TO HIT THE THANKS BUTTON!
If you know any unique or useful applications, games or widgets please suggest them in this thread so I can check them out. If I think they're good, I'll add them to the list.
*NOTE* - If you wish to know what the best app is regarding your needs, ask in this thread and I, or others, will be able to help you out.
So, if you want to know what the best music player is, ask here and I'll suggest the best ones available.
Will update the thread from time to time.
Thanks to KidCarter93 for giving me this idea.