I thought i should share this article with my readers who use android phones and see how many of you use these apps . The best thing about this post is i am actually posting this from my phone (via blogger app)
10 Must Have Free Android Apps
SetCPU is a tool for changing the CPU settings capable of overclocking and under clocking SetCPU allows the user to exert total control over how fast, or slow, the processor runs at any given point in time. As an example, SetCPU can force the processor to sit at its lowest setting whenever the screen is turned off, but to use a range between 240MHz and 806MHz as needed while the phone is awake. For phones that have the ability to drastically overclock, SetCPU can help ensure that they don't overheat by keeping watch on the temperature, and acting accordingly. Overclocking or not, battery savings and overall performance can be greatly enhanced using this app
2. Titanium Backup
Titanium Backup is the most powerful backup tool on Android, and then some.You can backup, restore, freeze (with Pro) your apps + data + Market links. This includes all protected apps & system apps, plus external data on your SD card. You can do 0-click batch & scheduled backups. Backups will operate without closing any apps (with Pro). You can move any app (or app data) to/from the SD card. You can browse any apps data and even query the Market to see detailed information about the app.
Protect your phone with award-winning security & antivirus from Lookout Lookout is lightweight, free antivirus for Android. it also has other features like finding lost mobile using GPS, Backup etc
Connect through SSH to your device! SSHDroid is a SSH server implementation for Android.This application will let you to connect to your device from a PC and execute commands (like "terminal" and "adb shell") or edit files (through SFTP, WinSCP, Cyberduck, etc...).
5. Advanced Task Killer
Just because Android apps have no "close" button doesn't mean they shut down when you return to the home page or move on to another app. You calendar, note pad, and programs in which you turn on event notifications might periodically run in the background, depleting your battery. Download and run Advanced Task Killer Free. You'll be amazed at the apps that run on start-up without your knowledge. While you can kill the task killer along with other apps, we recommend letting it run so you can easily use it a couple times throughout the day. Being able to set conditions for killing running apps would be an interesting future touch.
6. Where's My droid
When you lose your phone while the ringer is turned off it can be impossible to find it. Where's My Droid fixes that problem. After texting your phone a custom attention word the app turns the ringer volume up and makes your phone ring. It's also possible to get the GPS location of your phone in latitude and longitude and a link to Google maps
Enhance your privacy, break through firewalls and communicate more safely.Orbot is the official port of Tor to Android. Tor is a network of virtual tunnels that allows people and groups to improve their privacy and security on the Internet.
8. Busy Box
Busybox is often called "the Swiss Army Knife of Embedded Linux," because that's what it basically is. It's not an actual app that you run, but instead provides all the Linux/UNIX commands that we know and love. Without the commands installed, the barebones "Linux" that Android runs on top of can't really do too much, making apps like Terminal Emulator nearly worthless.
9. Wifi Anaylyzer
Turns your android phone into a Wi-Fi analyzer!!Shows the Wi-Fi channels around you. Helps you to find a less crowded channel for your wireless router.
10. Es File Explorer
ES File Explorer for Android is a free, featured all-in-one file manager & application manager & task killer & drop box client & ftp client which explores your phone and your computer. It allows android users anywhere in the world to manage their resources for free, it makes easy to manage, stay connected using your 3G, EDGE or WiFi, and share with friends, upload photos, watch videos.
Hope the above info helped you ,If you like the above apps please let me know them via comments