Symbian Links 

Telegram Groups

t.me/symbianos
t.me/symbian_world



Software (Symbian S^3, Anna, Belle):

https://mega.nz/folder/wnQkiSKD#vnJZyBYYbpJtfLMr2U69KQ


Symbian Development Tools (manuals, compilers, development tools, QT installers etc.):

http://www.mediafire.com/folder/w46oopk7gn3kb/Symbian_Development


Symbian Zone VK Group (Software and Discussions)

https://vk.com/symbian_zone?w=page-36741297_44427400


Delight CFW Firmware

 http://www.symwld.com/

 
http://n8delight.blogspot.com/

Nokia Firmwares

http://www.nokiafirmware.net/

All About Symbian


http://www.allaboutsymbian.com/
(also accessible through RSS apps or podcast)

Archives of Nokia Maps

https://web.archive.org/web/20200522175616/http://maps.tienda-sistore.com/Maps.php



The "must have" independent 3rd party Stores for Symbian ^3/Anna/Belle devices (Trusted Resources)

http://tienda-sistore.com/


https://applist.schumi1331.de/

Entire collection of SIStore archive (Trusted Resource)

https://web.archive.org/web/20200523060627/http://tienda-sistore.com/DataBase/Sis/ 


Apps

Before you upload apps, check the SIStore repo if the app is already available. If it isn’t available or it is a newer version or ovi-signed version you can upload it.

You can download/purchase some apps directly from developers here:
https://www.tequnique.com/apps_symbian
https://allstarsoftware.co.uk/symbian
http://marxoft.co.uk/downloads/
https://vk4me.curoviyx.ru/

Kutegram - Telegram Client for Symbian


Other Resources

Old N8FunClub Apps (not trusted anymore)

 https://www.n8fanclub.com/

Former Nokia/Opera Store:

http://symbian.oms.apps.bemobi.com/en_us/


You can also check the following sites (but proceed cautiously):
http://www.mobyware.org/symbian-os-software-download-all-2-date.html
https://phoneky.com/applications/?v=0
https://gallery.mobile9.com/c/symbian-series-60-3rd-ed-softwares/1/

Maps and other resources:

Official collection of music, sounds and ringtones included in various Nokia and Lumia phones over the years can be accessed here: https://soundcloud.com/nokia-design-team

Guides to hack your Symbian devices can be found here: https://www.n8fanclub.com/2011/09/norton-symbian-hack-by-coderus-symbian3.html

And here: https://www.n8fanclub.com/2012/10/nokia-belle-fp2-hack.html

For any developers interested in Symbian source code 

Finally, you can also join the Symbian community in facebook: https://www.facebook.com/groups/symbianfanboy