I came across a great resource, Cisco-centric Open Source Community (COSI). COSI is an Internet-based community that develops free Cisco tools and makes them available for download from its Web site. There are almost 50 utilities available for download. The scripts and utilities all include documentation, and the community has developed all of these tools to work with Cisco IOS routers, switches, firewalls, or CiscoWorks management software.
COSI’s Web site also offers other advantages. Clicking the link to download a script takes you to a community download page, which also features discussion forums for questions and support of these tools. It’s important to remember that Cisco’s Technical Assistance Center (TAC) doesn’t support these tools, so you must count on your own skills and the help of others in the community.
A tradeoff: These tools are not ideal for new Cisco IOS users or anyone who doesn’t have some Linux experience. Many of these tools help automate more advanced Cisco admin tasks when administering a midsize to large Cisco network