PostgreSQL Documentation (Core)

• The PostgreSQL Administrator's Guide, The PostgreSQL Global Development Group.
• The PostgreSQL Programmer's Guide, The PostgreSQL Global Development Group.
• The PostgreSQL Reference Manual, The PostgreSQL Global Development Group.
• The PostgreSQL Tutorial Introduction, The PostgreSQL Global Development Group.
• The PostgreSQL User's Guide, The PostgreSQL Global Development Group.

PostgreSQL Add-Ons

• PgAccess - a Tcl/Tk PostgreSQL interface, by teo@flex.ro.