SIP3

SIP3 is an open-source solution for troubleshooting and monitoring of VoIP-network-based systems. The job it does: managing your IT, from help desk to infrastructure, as an outside partner.

It makes the most sense for small and mid-sized companies. Alongside the main category they mention Technical Support. As a small company team themselves (11 to 50 people), they tend to serve customers of a similar scale best. Small vendors mean quick answers and real influence on the roadmap, but check who covers support when someone is out.

SIP3 is based in Dover, Delaware. More on sip3.io.

Our checklist for this category: response SLAs, onboarding, and what is billed per hour. Get the renewal terms in writing before the first invoice.

The facts above come from public company records. The score will come from people like you. Used SIP3? Rate it.