[Droid Eris Android Development] BigBeefy:
I would like to know the same thing. Here is a list of my apps. I dont know what most of them are. Some I use, some I think I use, others I have no clue. I only have 29mb of internal storage. I have tried everything to use a2sd on my phone. Nothing seems to work. So, I need to thin out my rom and get a little more streamlined. Any help would be greatly appreciated.

Mms.apk

Messages

PDFViewer.apk

I use this

FlashPlayer.apk

I use this

Weather.apk

I use this

Bluetooth.apk

I use this

GoogleApps.apk

I use these

PicoTts.apk

No clue what this does

EnhancedGoogleSearchProvider.apk

I dont use any of the google search options.

GooglePartnerSetup.apk

Not sure what all this does

Settings.apk

Use this

Clicker.apk

No clue

IQRD.apk

No clue

HtcPPST.apk

No clue

Phone.apk

pretty self explanitory

FlashLitePlugin.apk

Use this

MediaUploader.apk

I think I need this

HTCCamera.apk

Use this

WidgetDownloadManager.apk

Not sure about this

UserDictionaryProvider.apk

Use this

FieldTest.apk

No clue

htcmailwidgets.apk

Use this

TelephonyProvider.apk

Use this

HtcStreamPlayer.apk

Not sure if I use this or not

MarketUpdater.apk

GoogleCheckin.apk

Both used

GoogleSubscribedFeedsProvider.apk

Not sure

SettingsProvider.apk

Use this I think

PluginManager.apk

Not sure

HtcNaviPanel.apk

HtcDialer.apk

Use these

VoiceSearch.apk

PCSCII.apk

DCSImpl.apk

No Clue about these 3

HtcLocationPicker.apk

Use this

VoiceDialer.apk

Dont use this

htcbookmarkwidget.apk

Dont use this

Calendar.apk

SetupWizard.apk

Use these

htccalendarwidgets.apk

dont use sense, so dont use widgets

Gmail.apk

Dont use gmail on my phone

NetworkLocation.apk

DownloadProvider.apk

GoogleSettingsProvider.apk

Dont know about these

restartapp.apk

Use this

HtcContacts.apk

I have this and people. Not sure which one I use.

CustomizationSettingsProvider.apk

DCSUtility.apk

CertInstaller.apk

Not sure about these

CheckinProvider.apk

Use this

Updater.apk

Use this

HtcAddProgramWidget.apk

Not sure about this one

Street.apk

Mail.apk

Use these

Rosie.apk

Dont use sense, but this is linked to MANY things.

HTCSetupWizard.apk

dcbanned

UploadProvider.apk

Vending.apk

Not sure about these

HtcFacebook.apk

Use this

AccountAndSyncSettings.apk

Use this

OMADM.apk

No clue

HtcSettingsProvider.apk

MediaProvider.apk

Not sure

Superuser.apk

Use this

com.htc.MusicWidget.apk

Dont use

HtcRingtoneTrimmer.apk

ApplicationsProvider.apk

Not sure

DCSWeather.apk

Use this

HTCNew.apk

GlobalSearch.apk

Not sure

HTMLViewer.apk

HomeSwitcher.apk

Use these

TtsService.apk

Dont use

YouTube.apk

WeatherProvider.apk

Use these

EPST.apk

htcsettingwidgets.apk

VpnServices.apk

Not sure

com.htc.WeatherWidget.apk

Dont use

CalendarProvider.apk

Dont use this.

SocialNetworkProvider.apk

No sure

HtcMusic.apk

I listen to music, but dont know if this is it or not

HtcWeatherWallpaper.apk

Dont use

WeatherSyncProvider.apk

Use this

HTC_IME.apk

Use this

htcsearchwidgets.apk

DMPortRead.apk

HtcIQAgent.apk

No clue

GmailProvider.apk

Dont use

HtcSoundRecorder.apk

htcmsgwidgets.apk

HtcLocationService.apk

No clue

FilePicker.apk

Not sure

GoogleContactsSyncAdapter.apk

Use this

DmService.apk

No clue

CustomizationSetup.apk

PackageInstaller.apk

Not sure

htccontactwidgets.apk

another one I dont know if I use or not

SetCPU.apk

Use this

DrmProvider.apk

No clue

com.htc.FriendStreamWidget.apk

Dont use this

SpareParts.apk

Use this

FieldTrial.apk

No clue

WeatherAgentService.apk

Use this

wireless_tether_1_60_htc.apk

Use this

AccountSyncManager.apk

Use this

WorldClock.apk

Use this