Programming languages
Operating systems
Servers
Protocols
Markup languages
Scripting languages
Data store
Case tool
OOP
ERP
Java, C#, C/C++, Delphi, SQL, PL/SQL, Modula2, Pascal, Lisp, AutoLisp, Prolog, Fortran, Assembler.
Linux, Windows, Unix
Tomcat, Jetty, IBM WebSphere, IIS, Apache, JBoss, Orion, JRun OAS, Asterisk, SipX
SOAP, XML-RPC, SIP, RTP, LDAP, TCP/IP, HTTP, SSL, MM7, POP3, IMAP4
HTML, XML
JSP, ASP.NET, ASP, PHP, Perl, JavaScript, CSS.
IBM DB2, Oracle, MS SQL, MySQL, Access, PostgreSQL, OpenLDAP
MagicDraw, RationalRose, ERWin
UML, Design patterns
Openbravo