Cisco
- Routers
- Switches
- Firewalls
- Wireless Controllers/Access Points
- Cisco Unified CallManager
- Cisco Unified CallManager Express
- Cisco Unity Connection
- Cisco Presence
- Cisco UCCX / Express
Linux,Unix
- Samba (Active Directory)
- Apache (Web Server)
- Squid (Proxy and caching Server)
- Bind (DNS Server)
- Asterisk (Call Manager)
- Asterisk (Voice Mail System)
- Asterisk (Meeting Server)
- Sendmail / Postfix / Qmail (Mail / Pop3 / IMAP Servers)
- Squirrelmail (Webmail System)
- Monitoring System (Nagios / Netflow)
- Graphing System (Cacti / MRTG)
- VPN (Free Swan)
- Bandwidth control (CBQ)
- Authentication (Radius / LDAP / Tacacas+)
- Database (Mysql / Postgres)
- DHCP Server
- IPTables (Firewall)
Others
- OpenSource monitoring & Management products like Nagios, Cacti, etc
- Arc Products
- Blue Coat