Dr. Jukka Silvennoinen, aka DrJukka, is a prolific developer of free Symbian smartphone applications for S60 3rd and 5th edition phones. His best known apps are Y-Browser, a powerful file manager and Y-Tasks, a great collection of system utilities that includes a task manager, file association editor, crash monitor and a font viewer/manager. I’ve found both of these programs indispensable on my N95. Neither of them are available in the Ovi Store, unfortunately.
You can download Y-Browser and Y-Tasks and the rest of DrJukk’s apps, which include an inclinometer, profile and theme schedulers, a fake SMS sender and 50 JavaScript puzzles and games which DrJukka has ported to the Nokia WRT widget platform directly to your S60 phone from DrJukka’s new mobile site, m.drjukka.com
Except for the widgets all of DrJukka’s applications on the mobile site are ad supported. If you can’t take the ads, alternate unsigned, self signed or older ad free versions are available from DrJukka’s desktop site.
Filed in: Wap Review Directory – Technology/Mobile/Downloads
Ratings: Content 
Usability 
Ready.mobi Score: 2 “Bad”
Mobile Link: m.drjukka.com
thank u
Hello
Now both of them as well as plenty of other apps are also available fully symbian signed and in the OVI Store.