The implementations listed here are referenced in whole or in part by the Linux Standard Base when no formal specification is available.
Table 1-2. Related Implementations
| BSD | BSD 4.4 Lite version 2 | ||
| Linux | GNU/Linux defacto standard | http://www.gnu.org/ | |
| RPC & XDR | RFC 1831 & 1832 | http://www.ietf.org | Still need API reference, instead of protocol reference |
| RPM | RPM Package Format V3.0 | http://www.rpmdp.org/rpmbook/ |