Unknown (System titles?)
| Title-id | 
Description
 | 
| 0100000000000006 | 
 | 
| 0100000000000007 | 
 | 
| 0100000000000008 | 
 | 
| 0100000000000009 | 
 | 
| 010000000000000A | 
 | 
| 010000000000000B | 
 | 
| 010000000000000C | 
 | 
| 010000000000000E | 
 | 
| 010000000000000F | 
 | 
| 0100000000000010 | 
 | 
| 0100000000000012 | 
 | 
| 0100000000000013 | 
 | 
| 0100000000000014 | 
 | 
| 0100000000000015 | 
 | 
| 0100000000000016 | 
 | 
| 0100000000000018 | 
 | 
| 0100000000000019 | 
 | 
| 010000000000001A | 
 | 
| 010000000000001B | 
 | 
| 010000000000001C | 
 | 
| 010000000000001D | 
 | 
| 010000000000001E | 
 | 
| 010000000000001F | 
This TID is used by NS.
 | 
| 0100000000000020 | 
 | 
| 0100000000000021 | 
 | 
| 0100000000000022 | 
 | 
| 0100000000000023 | 
 | 
| 0100000000000024 | 
 | 
| 0100000000000025 | 
 | 
| 0100000000000029 | 
 | 
| 010000000000002A | 
 | 
| 010000000000002B | 
 | 
| 010000000000002D | 
 | 
| 010000000000002E | 
 | 
| 010000000000002F | 
 | 
| 0100000000000030 | 
 | 
| 0100000000000031 | 
 | 
| 0100000000000032 | 
 | 
| 0100000000000033 | 
 | 
| 0100000000000034 | 
 | 
| 0100000000000036 | 
 | 
Presumably system-modules going by total titles here, first 5 are probably bundled with the kernel in package2.
System Debug Applets
| Title-id | 
Description
 | 
| 0100000000002071 | 
Snapshot Dumper? Not on retail consoles.
 | 
System Data Archives
| Title-id | 
Description
 | 
| 0100000000000800 | 
SSL trusted certificates
 | 
| 0100000000000801 | 
Stores the message strings for Support Error Codes. There's "/DatabaseInfo" at FS root, then the rest is stored at "/{first 4 error digits}/{last 4 error digits}/".
 | 
| 0100000000000802 | 
Random textures?
 | 
| 0100000000000803 | 
Mounted as "shareddata:/". Contains various browser data: emojis, OSS NROs, "buildinfo/buildinfo.dat", ...
 | 
| 0100000000000804 | 
HTML resources: Open-source licenses("Intellectual Property Notices") and seizure warnings("Health & Safety Information"). The former is stored at FS "/legallines.htdocs/", while the latter is at "/safe.htdocs/".
 | 
| 0100000000000805 | 
Chinese and Korean dictionaries
 | 
| 0100000000000806 | 
Bad words
 | 
| 0100000000000807 | 
Hotspot List
 | 
| 0100000000000808 | 
European, English and Japanese dictionaries
 | 
| 0100000000000809 | 
System Version Title
 | 
| 010000000000080A | 
Chara?
 | 
| 010000000000080B | 
Tutorial images and strings. Used for the offline news by the News applet.
 | 
| 010000000000080C | 
EULA. Also accessed by NS.
 | 
| 010000000000080D | 
Blacklist URL
 | 
| 010000000000080E | 
Geo Zoneinfo
 | 
| 0100000000000810 | 
Extended font
 | 
| 0100000000000811 | 
Standard font
 | 
| 0100000000000812 | 
Korean font
 | 
| 0100000000000813 | 
Taiwanese font
 | 
| 0100000000000814 | 
Chinese font
 | 
| 0100000000000818 | 
System config
 | 
| 0100000000000819 | 
Firmware package A
 | 
| 010000000000081A | 
Firmware package B
 | 
| 010000000000081D | 
Errdisp strings
 | 
| 010000000000081E | 
Dummy file
 | 
| 010000000000081F | 
Icosa system config
 | 
| 0100000000000820 | 
Copper system config
 | 
| 0100000000000821 | 
Hoag system config
 | 
System Applets
| Title-id | 
Description
 | 
| 0100000000001000 | 
System applet
 | 
| 0100000000001001 | 
 | 
| 0100000000001002 | 
 | 
| 0100000000001003 | 
 | 
| 0100000000001004 | 
 | 
| 0100000000001005 | 
 | 
| 0100000000001006 | 
 | 
| 0100000000001007 | 
 | 
| 0100000000001008 | 
 | 
| 0100000000001009 | 
 | 
| 010000000000100A | 
 | 
| 010000000000100B | 
ShopN applet
 | 
| 010000000000100C | 
Overlay applet
 | 
| 010000000000100D | 
 | 
| 010000000000100F | 
 | 
| 0100000000001010 | 
Whitelisted applet (LoginApplet+ShareApplet+LobbyApplet)
 | 
| 0100000000001011 | 
WifiWebAuth applet
 | 
| 0100000000001012 | 
 | 
| 0100000000001013 | 
 | 
| 0100000000001015 | 
Fall-back TID used by NS when a state flag is val1 indicating the "System applet" TID shouldn't be loaded from config.
 | 
| 0100000000001016 | 
TID used by NS when a certain flag is non-zero, in multiple places including around code using string "application_install". This title doesn't seem to exist for retail.
 | 
Games
See here.