Realtime Infrastructure vendors

8 distinct realtime infrastructure vendors appear across 21 companies in the VendorStacks index — not inferred from tracking pixels or job posts, but read from what each company publishes about itself. Pusher leads at 33.3% adoption; the top five together account for 109.5%.

Most used realtime infrastructure vendors

Ranked by how many companies name each vendor in their own published documentation. Share is of the 21 companies we have a realtime infrastructure vendor for.

What else these companies run

Of the companies with a realtime infrastructure vendor, this is the share that also disclose a vendor in each other category — the co-adoption pattern behind most segmentation work.

Companies with a realtime infrastructure vendor

curl "https://api.vendorstacks.com/v1/prospect?category=realtime_infra" \
  -H "Authorization: Bearer vr_live_…"

How this is measured

Companies disclose their own vendors — subprocessor lists, trust centres, security pages and privacy documentation name third parties by regulation or by policy. VendorStacks crawls that public surface, renders JavaScript pages and PDFs, and matches a deterministic taxonomy of 24 categories against what the company itself published. No tracking pixels, no DNS fingerprints, no guessing from job posts. Every match keeps the sentence it came from, which is why a share figure on this page can be traced back to a specific document on a specific company's site. How it works →

Frequently asked questions

Which realtime infrastructure vendor is most widely used?

Pusher appears in 7 of the 21 companies we have a realtime infrastructure vendor for — 33.3% of them. The next four together account for 76.2%.

How do you know a company uses a realtime infrastructure vendor?

Because the company published it. Subprocessor lists, trust centres, security pages and privacy documents name vendors by law or by policy. We extract the vendor name and keep the sentence it came from, so every match has a quotable source rather than an inferred fingerprint.

How current is this data?

The most recently refreshed company in this category was updated 2026-08-10. Disclosure pages change slowly — usually when a vendor is added or dropped — and we re-scan on a rolling basis.

Can I get the full list rather than a sample?

Yes. One API call returns every company in this category with its vendors, the evidence row, and the source URL. A free key includes 25 credits and each lookup costs one.

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