ChannelGuideProvider.dll - Serves guide info to your Replay(s) - Not required.
GetShellCommands.dll     - Used for executing shell commands - Not required.
GuideServer.dll          - Used to View the Web-based Channel Guide - Not required.
HeadendProvider.dll      - Serves channel info for the lineup(s) provided by ZipcodeProvider - Not required.
IVSProvider.dll          - Provide IVS RDDNS lookups locally, then proxies to rddns-production - Not required.
NoPhoneNumbers.dll       - Intercepts phone number updates during a net connect - Not required.
NoReplayZones.dll        - Intercepts ReplayZone updates during a net connect - Not required.
NoSoftwareUpdate.dll     - Intercepts software updates during a net connect - Not required.
PutSyslogProvider.dll    - Intercepts syslog uploading during a net connect - Not required.
ServerManagment.dll      - Manages the WiRNS Server - Required
XactProvider.dll         - Proxies and Uploads/Downloads ReplayGuide info to/from MyReplayTV.com & to Poopli (if configured).
ZipcodeProvider.dll      - Serves lineup info (i.e. DirecTV, National or DISH, National, etc)- Not required.
LoginAuthLogout.dll      - If the ReplayTV servers are unreachable, this will return a 304 not modified. (This does NOT bypass service activation NOR let you "Steal" service)