All of the mentioned apps/tools/programs are available on Nokia’s Ovi store for free. I intentionally skipped out on games just because.
Weather
AccuWeather: Perfect weather widget tool. Flashy widget but a little heavy.
ForecaWeather: Perfect weather non-widget tool. Loads fast and very light but enough details with lots of long-term weather outlook to pack a serious punch.
Navigation
Google Maps: Loads fast and easy UI. Lacks turn-by-turn directions and no multi-touch. Perfect if you just want to load up a map from top down view to get a general sense of your geological position.
Ovi Maps: The menus are just a bit less intuitive compared to Google Maps but it more than makes up for that through the Navteq turn-by-turn navigation, free downloadable voice packages (example: Surfer Dude), user-defined custom navigation voice options, text-to-speech (which means it reads out street names), and finally, it utilizes the multi-touch capabilities on the N8.
System Tools
Battery Monitor: Excellent tool best utilized as a widget. Tells you how long your battery lasts based on how you use the phone.
DataMonitor: Monitors the connection packets and tells you how much data is sent/received and sorted by GPRS/3G/WiFi/Bluetooth connections. It loads a non-intrusive tiny floating tip-box at the top-left corner. The paid version I’m guessing gives you a lot more functionality.
Free Memory Bars: Simple and does the job as a desktop memory tracking widget.
ScreenSnap: Takes a screenshot of your screen. A standard screenshot tool is sadly lacking as a built-in functionality from Nokia so here is your best option.
Situations: Gives users the ability to program their devices based on various “situations”. For example, I personalized my “Silent” profile to kick in between 8:30AM and 5PM on the weekdays and based on my GPS location and the towers that my cellphone utilizes. Also added “powersave” mode to switch on when those conditions were met. Easy to use.
Swype: Although it’s missing the more critical portrait mode, Swype is a revolutionary tool used for typing on touch screen devices.
MultiMedia
Conversations: I think it’s included with all N8s but it wasn’t for the older S60 devices. Great way to keep track of SMS (ie. texting) conversations with your contacts.
Foursquare: The official Four Square app for Symbian^3. Keep a virtual log of all the places you’ve visited and share it to anybody you want.
Loop: Fun little toy with tons of features to record your voice and be a DJ.
NimBuzz: Simply the best IM (instant messaging) tool. Fring was great back in 2006 on the S60 but ever since, it’s been NimBuzz all the way.
Opera Mobile 10: Better than the built-in webkit browser in most cases. Also packs in a QWERTY virtual keyboard on portrait mode!!!
Skype: The official Skype app for Symbian^3. Highly improved version than the one found on the E71.
Sticky Notes: A flash-like virtual board with virtual post-it notes. You scribble notes but it’s very neat.
the ramblings 