The active supplier pool
The vendors we have access to.
Every vendor in our active sourcing pool. Published openly so the "vendor-agnostic" claim is structurally falsifiable. If a vendor is on this list, we can source the contract. If they are not, we will tell you that.
Active suppliers · Updated June 2026
Showing all 472 vendors
What you're looking at.
Every vendor above is in The Cardinal Source's active supplier pool. We can source contracts, run RFPs, negotiate terms, and oversee implementation with any of them.
The pool spans UCaaS and voice infrastructure, contact center (CCaaS) platforms, SD-WAN and SASE providers, cybersecurity managed services and MSSPs, connectivity carriers (national and regional), cloud and data center providers, AI and voice analytics platforms, and IoT and mobile services.
The list grows as we add new supplier agreements. It does not include every vendor in the channel — only the ones we have formally signed up to source. When a buyer's right answer is a vendor outside this pool, we say so.
The methodology that decides which vendor wins a given engagement — and why the same use case produces different vendor shortlists for different industries — is published at /method. The proprietary data engine behind the scoring is at /method/cardinal-index.
Run a sourcing engagement.
Three ways to engage. Pick the level of commitment that fits.
Tier 1 · Self-serve
Contract Benchmark
Upload your current contract. We return a benchmark showing where you are paying above market.
10 min upload · 5 biz days
Run the benchmark →Tier 2 · Named offer
Vendor Shortlist
45-minute scoping call. Written 3-vendor shortlist scored to your industry context.
~1 hour · Free
Schedule shortlist →Tier 3 · Engagement
Sourcing Engagement
All four stages, end to end. Supplier-paid. Walk away whenever.
30–90 days · Supplier-paid
Start engagement →