Seems to me Dirk's already made up his mind on the benefits of JIRA - but it'd be difficult to share a business case without knowing his key points of interests specific to those benefits. If he believes the two tools offer similar services then he'd need to assess cost…
Check out
Cacoo.com
conceptdraw.com
lucidchart.com
creately.com
some have collaboration features (nice) and while they also focus on flow charts etc, all should fit your interests. Of course you can always go the popular route and use Visio so your boss…
My first question when reading this post was why is your colleague looking to replace vCM with SCCM? Is it a license cost issue or are they moving from VMWare to Windows HyperV etc? Is their focus on problem management and any related patch management or compliance…