Company lists · Data refreshed November 2026

Top 25 Event stream processing software companies worldwide

RevenueBase identified 90 company matches for event stream processing software companies worldwide as of November 2026 and tracks 7,325 professional contacts across them, including 3,061 with verified work emails. The United States is the largest market and San Francisco the largest hub.

This list covers company matches for event stream processing software companies worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed November 5, 2026. Country and city lists for event stream processing software companies follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list RevenueBase SmartSearch · Exact Recorded Nov 5, 2026 How this list was built
90Companies
7,325Contacts tracked
3,061Verified emails
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The 25 largest event stream processing software companies worldwide

Ranked by team size
Top 25 of 90 company matches for event stream processing software companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 5, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchMountain View, CA, United StatesHQ recorded Nov 5, 20261,001-5,0003,425 contacts →

Exact match

“Confluent is pioneering a fundamentally new category of data infrastructure focused on data in motion.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
2Exact matchSanta Clara, United StatesHQ recorded Nov 5, 20261,001-5,0002,125 contacts →

Exact match

“TIBCO, a business unit of Cloud Software Group, has helped global enterprises solve their most complex business challenges for more than 25 years.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
3Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 2026201-500545 contacts →

Exact match

“The core of all AI, business intelligence and applications is data, various bits and bytes that come in all different formats.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
4Exact matchPalo Alto, CA, United StatesHQ recorded Nov 5, 2026201-500258 contacts →

Exact match

“Striim offers a leading real-time data streaming and integration platform, built by the same team behind Oracle GoldenGate.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
5Exact matchSan Francisco, CA, United StatesHQ recorded Nov 5, 202651-200122 contacts →

Exact match

“RudderStack's agentic CDP delivers self-serve marketing activation from a solid data foundation like no other solution on the market, with agentic capabilities covering the entire…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
6Exact matchBangalore, IndiaHQ recorded Nov 5, 202651-200119 contacts →

Exact match

“At Zeliot, we are redefining the future of real-time data streaming, empowering enterprises and developers to unlock the full potential of their data with speed, simplicity, and…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
7Exact matchMountain View, CA, United StatesHQ recorded Nov 5, 202651-20098 contacts →

Exact match

“StarTree, powered by Apache Pinot™, is the platform for continuous insights at scale.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
8Exact matchMunich, GermanyHQ recorded Nov 5, 202651-20069 contacts →

Exact match

“Data Reply, part of the Reply Group, helps organizations unlock the full value of Data and AI, from strategy and organizational transformation to scalable technical implementation.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
9Exact matchJakarta, IndonesiaHQ recorded Nov 5, 202611-5056 contacts →

Exact match

“Sibernetik is a company in Indonesia that provides Data Streaming Analytics and Security solutions.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
10Exact matchUtrecht, NetherlandsHQ recorded Nov 5, 202611-5048 contacts →

Exact match

“Axual provides a Enterprise Streaming Platform for mid-size to large organizations.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
11Exact matchSan Francisco, United StatesHQ recorded Nov 5, 202651-20047 contacts →

Exact match

“Kurrent provides an event-native data platform that feeds real-time, business-critical data with historical context in fine-grained streams from origination to destination…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
12Exact matchLondon, United KingdomHQ recorded Nov 5, 202651-20031 contacts →

Exact match

“Since 2016, Lenses.io has helped developers to power the world’s largest companies with real-time data, by making data streams easier for engineers to work with.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
13Exact matchCampbell, CA, United StatesHQ recorded Nov 5, 202611-5023 contacts →

Exact match

“Founded in 2015, Nstream (formally known as Swim) enables organizations to build open-source, full-stack applications directly on top of streaming data, providing real-time…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
14Exact matchSanta Clara, United StatesHQ recorded Nov 5, 202611-5020 contacts →

Exact match

“Founded in 2021 and headquartered in Santa Clara, California, Timeplus is a pioneering technology company specializing in real-time analytics and stream processing.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
15Exact matchSeattle, WA, United StatesHQ recorded Nov 5, 202651-20016 contacts →

Exact match

“CrowdStrike Falcon LogScale is a time-series logging and aggregation platform for unrestricted, comprehensive event analysis, On-Premises or in the Cloud.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
16Exact matchArlington, VA, United StatesHQ recorded Nov 5, 202611-5015 contacts →

Exact match

“Conseqta applies disruptive technologies and practices to deliver platforms and systems engineered for the future.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
17Exact matchMadrid, SpainHQ recorded Nov 5, 202651-20014 contacts →

Exact match

“Onum empowers enterprises to derive value from data in stream, helping IT and Security teams move at the speed of business.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
18Exact matchBern, SwitzerlandHQ recorded Nov 5, 202611-5013 contacts →

Exact match

“At SPOUD, we empower our customers with data streaming solutions to unlock the potential of real-time data, providing expert guidance and cloud-native event streaming solutions to…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
19Exact matchPortland, OR, United StatesHQ recorded Nov 5, 202611-5013 contacts →

Exact match

“Powering the next generation of cybersecurity applications thatDot presents a highly scalable streaming graph event processing engine that spun out of a DARPA project for advanced…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
20Exact matchStockholm, SwedenHQ recorded Nov 5, 202611-5010 contacts →

Exact match

“Crosser designs and develops a hybrid-first Streaming Analytics & Integration software for any Cloud, On-premise or Edge.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
21Exact matchBucharest, RomaniaHQ recorded Nov 5, 20261-109 contacts →

Exact match

“Drift Data is a software company focused on bringing real-time capabilities in the organizations by processing, correlating and act on thousands of events per second using our…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
22Exact matchBerlin, GermanyHQ recorded Nov 5, 20261-109 contacts →

Exact match

“We are building AI infra products.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
23Exact matchSanta Clara, CA, United StatesHQ recorded Nov 5, 202611-509 contacts →

Exact match

“InfinyOn is a next-generation streaming platform that unifies your data flows, accelerates processing with Rust and WebAssembly, and empowers developers to build responsive…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
24Exact matchKortrijk, BelgiumHQ recorded Nov 5, 202611-508 contacts →

Exact match

“At Cymo, we help businesses unlock the full potential of Event-Driven Architecture, providing real-time data solutions that are both adaptable and scalable.”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase
25Exact matchMilan, United StatesHQ recorded Nov 5, 202611-506 contacts →

Exact match

“Lightstreamer is a global leader in "last-mile streaming," serving over 500 customers and 100 million end-users, trusted by organizations like Morgan Stanley, NASA, Sony, Delta…”

Recorded in the RevenueBase company graph · Nov 5, 2026 · View company records in RevenueBase

Showing 25 of 90 event stream processing software companies worldwide

See the full list, filter by size, metro and specialty, and access 3,061 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Event stream processing software companies worldwide at a glance

As of Nov 5, 2026
41.8%Verified-email coverage
81.4Average contacts per company
1-10Median size (employees)
7.8%Largest-city concentration · San Francisco
Nov 5, 2026Page data refreshed

Companies by employee count

1-10
46
11-50
29
51-200
9
201-500
2
1,001-5,000
4

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage
Every country. Country and city lists for event stream processing software companies are linked below.
What qualifies
Company records worldwide whose business descriptions match “event stream processing software companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every displayed company carries at least one verified work email. RevenueBase tracks 3,061 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on November 5, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Event stream processing software companies by location

1 lists · largest first

Every Event stream processing software companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “event stream processing software companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many event stream processing software companies are there worldwide?

RevenueBase identified 90 company matches for event stream processing software companies worldwide as of November 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Confluent tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most event stream processing software companies?

The United States leads with 32 companies. Every event stream processing software companies list by country and city is linked on this page.

Which city has the most event stream processing software companies?

San Francisco leads with 7 company records, followed by London (4) and Santa Clara (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 3,061 professional contacts with verified work emails tracked across these 90 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on November 5, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.