SMB (setup: Setup / Sharing / File Sharing / Options / Share Files and Folders using SBM (Windows); THIS for other OS'es)Manual (both local and remote) / Automatic (local) discovery?Download (first) / streaming?If streaming: quick repositioning?If streaming: HW decoding support?UPnP/DLNA (see THIS for a list of OS X servers)Manual (both local and remote) / Automatic (local) discovery?Download (first) / streaming?If streaming: quick repositioning?If streaming: HW decoding support?AirPlay targetOther remarks
stock Videos app-n/an/an/an/a-n/an/an/an/a n/a
nPlayer- (WebDAV / FTP / UPnP / HTTP only)n/a n/a n/a n/a +- / +- / ++++ 
iMedia Player- (only HTTP)n/a n/a n/a n/a - (only HTTP)n/a n/a n/a n/a  n/a
Media Player PRO (was: Movie Player HD+)- (only HTTP)n/a n/a n/a n/a - (only HTTP)n/a n/a n/a n/a  n/a
yaPlayer- (absolutely no streaming support)n/an/an/an/a- (absolutely no streaming support)n/a n/a n/a n/a  n/a
RockPlayer2- (absolutely no streaming support)n/an/an/an/a- (absolutely no streaming support)n/an/an/an/a n/a
PowerPlayer+ + / ++ / - (isn't able to stream at all, unlike its bigger brother, GoodPlayer – can only download)n/a (only local playback is possible)- (no acceleration of iOS-native files)++ (+ icon in bottom left) / ++ (select „Download” in the pop-up context menu)+ (both SW and HW decoding mode)+ (select „Play by iPod plugin” in the pop-up context menu) / - for MKV!+ 
MoliPlayer- (absolutely no streaming support)n/an/an/an/a- (absolutely no streaming support)n/a n/a n/a n/a  n/a
VLC (AppStore + Cydia 1.1.1)- (absolutely no streaming support)n/an/an/an/a-n/an/an/an/a n/a
WMV Player Pro WiFi-n/an/an/an/a-n/an/an/an/a n/a
Falcon Player and Downloader Pro for iPad - (absolutely no streaming support)n/an/an/an/a-n/an/an/an/a n/a
VM Player HD? (supposed to be there; didn't work with my password-protected OS X share – printed „Request not supported”)+ / - ? (couldn't test because of incompatibility)? (couldn't test because of incompatibility)? (couldn't test because of incompatibility)+ (second (Globe) icon on top left)+ / ++ / +-(Just a dark screen when streaming (downloading works). After switching to SW decoding, it works. GoodPlayer works just fine in streamed, HW-accelerated mode under exactly the same circumstances.) Not very good
ReplayerHD Pro- (absolutely no streaming support)n/an/an/an/a- (absolutely no streaming support)n/an/an/an/a n/a
viPlay (Lite)+ (albeit didn't actually play files) + / -+ / + (to download, tap-and-hold the title)? (couldn't test because of incompatibility)? (couldn't test because of incompatibility)- (SMB / FTP only)n/an/an/an/a n/a
TTPlayerHD- (absolutely no streaming support)n/an/an/an/a- (absolutely no streaming support)n/an/an/an/a n/a
Privacy video player safe & lock- (absolutely no streaming support)n/an/an/an/a- (absolutely no streaming support)n/an/an/an/a n/a
iSpring Movie Player- (absolutely no streaming support)n/an/an/an/a- (absolutely no streaming support)n/an/an/an/a n/a
QQPlayerHD- (absolutely no streaming support)n/an/an/an/a- (absolutely no streaming support)n/an/an/an/a n/a
LuberPlayerHD     - (SMB / FTP only)n/an/an/an/a n/a
PlugPlayer-n/an/an/an/a+ (even as a server and controller!)+ / +- / +++ Excellent support!
PlayerXtreme+ / ++ („Menu” button at the top > Connect to Server) / ++ (Download menu item when tapping a file) / + -++ (via the second, Network tab)+ (Menu (third icon at the top left / Connect to Server)) / ++ / +++  
Playable- (only HTTP)n/an/an/an/a- (only HTTP)n/an/an/an/a n/a
Video Media Player -n/an/an/an/a-n/an/an/an/a n/a
8player-n/an/an/an/a++ (even remote 3G access!) / ++ (tap-and-hold the file for the context menu, with the Downloads button, to display!) / ++++-
AcePlayer? ((while it does list the files, neither streaming nor downloading work)+ / -+ (theoretically!) / + (theoretically!)? (couldn't test because of incompatibility)? (couldn't test because of incompatibility)++ (Media Servers / „+” icon in top right) / ++ / ++++-
TopPlayerHD- (absolutely no streaming support)n/an/an/an/a- (absolutely no streaming support)n/an/an/an/a n/a
ProPlayer- (absolutely no streaming support)n/an/an/an/a- (absolutely no streaming support)n/an/an/an/a n/a
HD Player Pro (used to be ATK Player by Khoa Tran Anh)- (HTTP only)n/an/an/an/a- (HTTP only)n/an/an/an/a n/a
Play Any Video Format - PlayerX HD- (absolutely no streaming support)n/an/an/an/a- (absolutely no streaming support)n/an/an/an/a n/a
Oplayer HD by olimsoft+ (+ button on the left in the first, „File Servers” tab). Note that it plays videos upside down+ / -+ (tap the down arrow on the far right) / ++-- (SMB and FTP only)n/an/an/an/a n/a
GPlayer by Ginkgo Tech- (UPnP only)n/an/an/an/a+ (arrow icon in bottom left))- / +- / ++- (and, in addition, very slow to start)+ (as opposed to built-in player) 
BUZZ Player++ / ++ / + (asks right when tapping the video file)+ -+ (fourth (SMB / FTP? Icon at the bottom left), also as a server (last icon at the bottom right; first tab in the dialog. Works great!)+ / ++ / +++ for MP4; - for MKV+ 
Movie Player – Plays any Video! by Dominic Rodemer - (HTTP / DropBox only)n/an/an/an/a- (HTTP / DropBox only)n/an/an/an/a n/a
Azul Media Player - Video player for your iPad By Gplex- (HTTP only)n/an/an/an/a- (HTTP only)n/an/an/an/a n/a
AVPlayerHD by EPLAYWORKS.Co.Ltd.- (FTP only)n/an/an/an/a- (FTP only)n/an/an/an/a n/a
eXPlayer HD by Zhigang Chen+; accessible through the + button / Windows Network Server+ / ++ (tap the down arrow on the far right) / ++ + (!!!!!!!!!!!!)+- / + (+ icon in top right corner of filelist)- / + (as opposed to Samba / FTP client mode)+-? (couldn't re-login to the server and deleting the previous record immediately crashes the app)Not recommended! Tested with the built-in uPnP server of BUZZ player as exPlayer doesn't list anyfiles with MMS1.1.4 running on the Mac
GoodPlayer by Hustmobile+ (with even auto-discovery); ONLY SW playback when streaming as opposed to pre-download+ / + + / + (Selection dialog presented right after tapping the file)+-++ / ++ (doesn't resume shut-down download, as opposed to HTTP!) / +++ +  
yxplayer by mobilesoft.kr+ (very basic: no way of entering credentials, so, it's not able to access protected SMB shares!)- / +- / +--+ (Arrow icon in top right / Video Source)- / +- / ++--Very weak!
CineXPlayer – The best way to enjoy your Xvid movies by NXP Software B.V.- (UPnP / HTTP only)n/an/an/an/a+ (third icon in the bottom left)- / +- / ++++n/a
EC Player+ (+ icon in the top left > Shared drives (SMB))+ / -+ / +, asks right after tapping a file+ -- (HTTP / SMB only)n/an/an/an/a n/a
It's Playing by Addition, Lda++ / + + (tap the huge green-blue Download icon in the playback area after selecting the file) / ++ --n/an/an/an/a n/a
AnyPlayerHD-n/an/an/an/a+ (Streamer (second icon at on the left center)- / +- / +---?
flex:player-n/an/an/an/a-n/an/an/an/a n/a
RushPlayer-n/an/an/an/a+ (main menu: Wifi > UPnP list element in the center) - / +- / +Partial (only with SW-based MKV decoding; it crashes with MKV files)- (upon tapping the “SW” button to switch to HW decoding, it exits to the filelist view. After returning, it's playing by SW again.)-Partial (useless for HW-assisted MKV playback: remuxing pauses are unbearably long. HW-based MP4 playback was better after the initial 20-30 seconds. SW-based decoding also works OK)
RushPlayer+ (Cydia!)(same)(same)(same)(same)(same)Partial – doesn't work with iDevice-native files at all, only non-native ones and MKV's. MP4 ones exit at once. MKV files, however, played back nicely in HW!(same as RP)(same as RP)+Partial (+ with MKV's)n/a (no ATV / iOS-native support over UPnP at all)while you can encounter smaller problems (like audio only in the first about 10 seconds with higher-bitrate 1080p videos like Monsters), after the startup, playback becomes smooth
XBMC (Cydia!)+; note that It's may be heavily buffering with larger (e.g., 1080p) content, which is a common problem and, currently, can't and won't be fixed: see THIS and THIS. No built-in support forfully transferring files to the local drive first either – unlike almost ALL the other apps.+ („Add network location” at the bottom of the Add video source / Browse list) / +- / + + + ++ („Add network location” at the bottom of the Add video source / Browse list) / +- / +++ (also for MKV's)n/a