I found this awhile ago, i forget where, but It helps you determine if an application is safe to remove when deleting from an appmanager like titanium backup in android 2.1
This can help you retain your market when you slim down your ally
AlarmClock.apk - Alarm Clock App
Safe to remove if not needed by user.
AlarmClock.odex - Alarm Clock App
Safe to remove if AlarmClock.apk is removed.
AmazonMp3.apk - Amazon MP3 App
Safe.
ApplicationsProvider.apk
ApplicationsProvider.odex
BejeweledDemo.apk - Bejeweled Demo App
Safe.
BluetoothTest.apk
Removed with no side effects. Only rm if bluetooth is not needed.
BluetoothTest.odex
Removed with no side effects. Only rm if bluetooth is not needed.
BrcmBluetoothServices.apk
Removed with no side effects. Only rm if bluetooth is not needed.
BrcmBluetoothServices.odex
Removed with no side effects. Only rm if bluetooth is not needed.
Brightness.apk - ?
Removed with no side effects.
Brightness.odex - ?
Removed with no side effects.
Browser.apk - Web Browser App
Safe to remove if another browser is installed.
Browser.odex - Web Browser App
Safe to remove if Browser.apk has been removed.
Calculator.apk - Calculator App
Safe to remove if not needed.
Calculator.odex - Calculator App
Remove if Calculator.apk has been removed.
Calendar.apk
Safe to remove if not needed.
Calendar.odex
Safe if Calendar.apk has been removed.
CalendarProvider.apk
CalendarProvider.odex
Camera.apk - Camera App
Unsafe. Camera will not function.
Camera.odex
Unsafe. Camera will not function.
CertInstaller.apk
CertInstaller.odex
Contacts.apk - Contacts App
Unsafe.
Uninstalls dialer so no calls can be made.
Contacts.odex - Contacts App
Unsafe.
Causes phone to crash.
ContactsProvider.apk
Unsafe.
ContactsProvider.odex
Unsafe.
DeviceManagement.apk
Unsafe. Phone crashes.
DeviceManagement.odex
Unsafe. Phone crashes.
DrmProvider.apk
Removed with no side affects.
DrmProvider.odex
Removed with no side affects.
Dun.apk - ?
Removed with no side affects.
Dun.odex - ?
Removed with no side affects.
Email.apk - Email App
Safe to remove if not needed.
Email.odex - Email App
Removed with no side affects.
EnhancedGoogleSearchProvider.apk
FactoryTest.apk - ?
Removed with no side effects.
FactoryTest.odex - ?
Removed with no side effects.
FileViewer.apk - File Viewing App
Safe. (probably used to view PDF's in Gmail)
FileViewer.odex - File Viewing App
Safe.
GlobalSearch.apk
Removed with no side effects.
GlobalSearch.odex
Removed with no side effects.
Gmail.apk - Gmail App
Safe to remove if not needed.
GmailProvider.apk - Gmail
Remove if Gmail.apk is removed.
GoogleApps.apk
GoogleCheckin.apk
Removed with no side effects.
GoogleContactsSyncAdapter.apk
GooglePartnerSetup.apk
GoogleSearch.apk
GoogleSearch.odex
GoogleSettingsProvider.apk
GoogleSubscribedFeedsProvider.apk
GpsSetup.apk
Removed with no side effects.
GpsSetup.odex
Removed with no side effects.
HTMLViewer.apk
Removed with no side effects.
HTMLViewer.odex
Removed with no side effects.
HiddenMenu.apk
HiddenMenu.odex
InputEventApp.apk
Removed with no side effects.
InputEventApp.odex
Removed with no side effects.
KeyBoardSlideUpCounter.apk - ?
Removed with no side effects.
KeyBoardSlideUpCounter.odex - ?
Removed with no side effects.
Keytracer.apk
Keytracer.odex
LatinImeTutorial.apk
Launcher.apk - Home Launcher
Safe if another home app is installed.
Launcher.odex
Safe if another home app is installed.
LcdTest.apk - ?
Safe. End key would not sleep the screen after removal but a fix is to go to Spare Parts and then end button behaviour and reclick on sleep. Works normal after that.
LcdTest.odex - ?
Safe.
Maps.apk - Google Maps App
Safe to remove if not needed.
MarketUpdater.apk
MediaProvider.apk
MediaProvider.odex
MediaUploader.apk
Mms.apk - Picture Mail
Unsafe if you use picture mail. Safe if you do not send or receive picture mail. Will not send or receive picture mail after removal.
Mms.odex - Picture Mail
Unsafe if you use picture mail. Safe if you do not and have removed Mms.apk.
MoxierMail.apk - Moxiermail
Safe.
Music.apk - Music
Music.odex
MusicService.apk
NetworkLocation.apk
OPP.apk
Removed with no side effects.
OPP.odex
Removed with no side effects.
PackageInstaller.apk
PackageInstaller.odex
Phone.apk
Phone.odex
PhoneCrashNotifier.apk
PhoneCrashNotifier.odex
PhoneErrService.apk
PhoneErrService.odex
PhoneInfo.apk
PhoneInfo.odex
PicoTts.apk
Removed with no side effects.
PicoTts.odex
Removed with no side effects.
SDSA.apk - Device Self Service App
Safe.
Settings.apk
Settings.odex
SettingsProvider.apk
SettingsProvider.odex
SetupWizard.apk
SoundRecorder.apk
SoundRecorder.odex
SprintAndroidExtension.apk
Removed with no side effects.
SprintNavigation.apk - Sprint Telenav App
Safe.
SprintTVWidget.apk - Sprint TV App
Safe.
SprintTV_MR2_Samsung_Moment_GM_Final_1.0.4.29-112596.apk - Sprint TV App
Safe.
Sprint_App_Updater.apk
Removed with no side affects. Update bloatware?
Street.apk
Safe if Street view is not needed in google maps.
SystemUpdater.apk
Talk.apk - Google Talk App
Safe.
Has caused a few to not be able to download from the market on the new 2.1 if removed.
TalkProvider.apk
Unsafe.
TelephonyProvider.apk
TelephonyProvider.odex
Term.apk - Term App
Safe.
Term.odex - Term App
Safe.
TtsService.apk - Text to Speech App
Safe.
TtsService.odex - Text to Speech App
Safe.
UserDictionaryProvider.apk
Removed with no side affects. Edit: Several Users have reported FC and narrowed it down to this, removal is questionable.
UserDictionaryProvider.odex
Removed with no side affects. Edit: Several Users have reported FC and narrowed it down to this, removal is questionable.
VSuiteApp.apk - Nuance Voice App
Safe.
Phone had to be turned off by battery pull the first time because it kept erroring. Does not cause a problem at all when rebooted. Do this one last on your list if using connectbot or phone terminal.
Vending.apk
Unsafe. No market after RM.
VoiceSearchWithKeyboard.apk - Virtual Keyboard
Unsafe if you use the onscreen keyboard. Safe if it is not necessary for you.
VpnServices.apk
Removed with no side effects.
VpnServices.odex
Removed with no side effects.
Weather2-16.apk - Weather App
Safe.
WlanTest.apk
Removed with no side effects.
WlanTest.odex
Removed with no side effects.
YouTube.apk - Youtube app
Safe.
addr.apk
addr.odex
cm-android.apk - Visual Voicemail
Safe.
com.google.android.marvin.kickback.apk - ?
Safe. Removed with no side effects.
com.google.android.marvin.soundback.apk - ?
Safe. Removed with no side effects.
com.google.android.marvin.talkback.apk - ?
Safe. Removed with no side effects.
gtalkservice.apk - Google Talk
Unsafe. No market Downloads.
im.apk - Instant Messaging App
Safe.
nascar09-prod-release.apk - Nascar App
Safe.
nfl-prod-release.apk - NFL App
Safe.
serviceModeApp.apk
Removed with no side effects.
serviceModeApp.odex
Removed with no side effects.
shutdown.apk - ?
Removed with no side effects.
shutdown.odex - ?
Removed with no side effects.
version.apk - ?
Removed with no side effects.
version.odex - ?
Removed with no side effects.
xms-android-1.1.4-signed.apk - Photo and Place App
Safe.
This can help you retain your market when you slim down your ally
AlarmClock.apk - Alarm Clock App
Safe to remove if not needed by user.
AlarmClock.odex - Alarm Clock App
Safe to remove if AlarmClock.apk is removed.
AmazonMp3.apk - Amazon MP3 App
Safe.
ApplicationsProvider.apk
ApplicationsProvider.odex
BejeweledDemo.apk - Bejeweled Demo App
Safe.
BluetoothTest.apk
Removed with no side effects. Only rm if bluetooth is not needed.
BluetoothTest.odex
Removed with no side effects. Only rm if bluetooth is not needed.
BrcmBluetoothServices.apk
Removed with no side effects. Only rm if bluetooth is not needed.
BrcmBluetoothServices.odex
Removed with no side effects. Only rm if bluetooth is not needed.
Brightness.apk - ?
Removed with no side effects.
Brightness.odex - ?
Removed with no side effects.
Browser.apk - Web Browser App
Safe to remove if another browser is installed.
Browser.odex - Web Browser App
Safe to remove if Browser.apk has been removed.
Calculator.apk - Calculator App
Safe to remove if not needed.
Calculator.odex - Calculator App
Remove if Calculator.apk has been removed.
Calendar.apk
Safe to remove if not needed.
Calendar.odex
Safe if Calendar.apk has been removed.
CalendarProvider.apk
CalendarProvider.odex
Camera.apk - Camera App
Unsafe. Camera will not function.
Camera.odex
Unsafe. Camera will not function.
CertInstaller.apk
CertInstaller.odex
Contacts.apk - Contacts App
Unsafe.
Uninstalls dialer so no calls can be made.
Contacts.odex - Contacts App
Unsafe.
Causes phone to crash.
ContactsProvider.apk
Unsafe.
ContactsProvider.odex
Unsafe.
DeviceManagement.apk
Unsafe. Phone crashes.
DeviceManagement.odex
Unsafe. Phone crashes.
DrmProvider.apk
Removed with no side affects.
DrmProvider.odex
Removed with no side affects.
Dun.apk - ?
Removed with no side affects.
Dun.odex - ?
Removed with no side affects.
Email.apk - Email App
Safe to remove if not needed.
Email.odex - Email App
Removed with no side affects.
EnhancedGoogleSearchProvider.apk
FactoryTest.apk - ?
Removed with no side effects.
FactoryTest.odex - ?
Removed with no side effects.
FileViewer.apk - File Viewing App
Safe. (probably used to view PDF's in Gmail)
FileViewer.odex - File Viewing App
Safe.
GlobalSearch.apk
Removed with no side effects.
GlobalSearch.odex
Removed with no side effects.
Gmail.apk - Gmail App
Safe to remove if not needed.
GmailProvider.apk - Gmail
Remove if Gmail.apk is removed.
GoogleApps.apk
GoogleCheckin.apk
Removed with no side effects.
GoogleContactsSyncAdapter.apk
GooglePartnerSetup.apk
GoogleSearch.apk
GoogleSearch.odex
GoogleSettingsProvider.apk
GoogleSubscribedFeedsProvider.apk
GpsSetup.apk
Removed with no side effects.
GpsSetup.odex
Removed with no side effects.
HTMLViewer.apk
Removed with no side effects.
HTMLViewer.odex
Removed with no side effects.
HiddenMenu.apk
HiddenMenu.odex
InputEventApp.apk
Removed with no side effects.
InputEventApp.odex
Removed with no side effects.
KeyBoardSlideUpCounter.apk - ?
Removed with no side effects.
KeyBoardSlideUpCounter.odex - ?
Removed with no side effects.
Keytracer.apk
Keytracer.odex
LatinImeTutorial.apk
Launcher.apk - Home Launcher
Safe if another home app is installed.
Launcher.odex
Safe if another home app is installed.
LcdTest.apk - ?
Safe. End key would not sleep the screen after removal but a fix is to go to Spare Parts and then end button behaviour and reclick on sleep. Works normal after that.
LcdTest.odex - ?
Safe.
Maps.apk - Google Maps App
Safe to remove if not needed.
MarketUpdater.apk
MediaProvider.apk
MediaProvider.odex
MediaUploader.apk
Mms.apk - Picture Mail
Unsafe if you use picture mail. Safe if you do not send or receive picture mail. Will not send or receive picture mail after removal.
Mms.odex - Picture Mail
Unsafe if you use picture mail. Safe if you do not and have removed Mms.apk.
MoxierMail.apk - Moxiermail
Safe.
Music.apk - Music
Music.odex
MusicService.apk
NetworkLocation.apk
OPP.apk
Removed with no side effects.
OPP.odex
Removed with no side effects.
PackageInstaller.apk
PackageInstaller.odex
Phone.apk
Phone.odex
PhoneCrashNotifier.apk
PhoneCrashNotifier.odex
PhoneErrService.apk
PhoneErrService.odex
PhoneInfo.apk
PhoneInfo.odex
PicoTts.apk
Removed with no side effects.
PicoTts.odex
Removed with no side effects.
SDSA.apk - Device Self Service App
Safe.
Settings.apk
Settings.odex
SettingsProvider.apk
SettingsProvider.odex
SetupWizard.apk
SoundRecorder.apk
SoundRecorder.odex
SprintAndroidExtension.apk
Removed with no side effects.
SprintNavigation.apk - Sprint Telenav App
Safe.
SprintTVWidget.apk - Sprint TV App
Safe.
SprintTV_MR2_Samsung_Moment_GM_Final_1.0.4.29-112596.apk - Sprint TV App
Safe.
Sprint_App_Updater.apk
Removed with no side affects. Update bloatware?
Street.apk
Safe if Street view is not needed in google maps.
SystemUpdater.apk
Talk.apk - Google Talk App
Safe.
Has caused a few to not be able to download from the market on the new 2.1 if removed.
TalkProvider.apk
Unsafe.
TelephonyProvider.apk
TelephonyProvider.odex
Term.apk - Term App
Safe.
Term.odex - Term App
Safe.
TtsService.apk - Text to Speech App
Safe.
TtsService.odex - Text to Speech App
Safe.
UserDictionaryProvider.apk
Removed with no side affects. Edit: Several Users have reported FC and narrowed it down to this, removal is questionable.
UserDictionaryProvider.odex
Removed with no side affects. Edit: Several Users have reported FC and narrowed it down to this, removal is questionable.
VSuiteApp.apk - Nuance Voice App
Safe.
Phone had to be turned off by battery pull the first time because it kept erroring. Does not cause a problem at all when rebooted. Do this one last on your list if using connectbot or phone terminal.
Vending.apk
Unsafe. No market after RM.
VoiceSearchWithKeyboard.apk - Virtual Keyboard
Unsafe if you use the onscreen keyboard. Safe if it is not necessary for you.
VpnServices.apk
Removed with no side effects.
VpnServices.odex
Removed with no side effects.
Weather2-16.apk - Weather App
Safe.
WlanTest.apk
Removed with no side effects.
WlanTest.odex
Removed with no side effects.
YouTube.apk - Youtube app
Safe.
addr.apk
addr.odex
cm-android.apk - Visual Voicemail
Safe.
com.google.android.marvin.kickback.apk - ?
Safe. Removed with no side effects.
com.google.android.marvin.soundback.apk - ?
Safe. Removed with no side effects.
com.google.android.marvin.talkback.apk - ?
Safe. Removed with no side effects.
gtalkservice.apk - Google Talk
Unsafe. No market Downloads.
im.apk - Instant Messaging App
Safe.
nascar09-prod-release.apk - Nascar App
Safe.
nfl-prod-release.apk - NFL App
Safe.
serviceModeApp.apk
Removed with no side effects.
serviceModeApp.odex
Removed with no side effects.
shutdown.apk - ?
Removed with no side effects.
shutdown.odex - ?
Removed with no side effects.
version.apk - ?
Removed with no side effects.
version.odex - ?
Removed with no side effects.
xms-android-1.1.4-signed.apk - Photo and Place App
Safe.