Company lists · Data refreshed September 2026

Top 16 Mls software developers based in the United States

RevenueBase identified 28 mls software developers headquartered in the United States as of September 2026 and tracks 543 professional contacts across them, including 127 with verified work emails. Milford is the largest hub.

This list covers mls software developers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review
28Companies
543Contacts tracked
127Verified emails
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The 16 largest mls software developers based in the United States

Ranked by team size
Top 16 of 28 mls software developers based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to mls software developers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceWestlake Village, CA, United StatesHQ checked Sep 28, 202651-20085 contacts →

Indirect evidence

“Rapattoni Corporation has been serving the real estate industry since 1970.”

Source: RevenueBase Database · checked Sep 28, 2026
2Strong evidenceAustin, TX, United StatesHQ checked Sep 28, 202611-5038 contacts →

Strong evidence

“dynaConnections is an innovative software company that has been paving the way in MLS technology for over 20 years.”

Source: RevenueBase Database · checked Sep 28, 2026
3Indirect evidenceGreensboro, NC, United StatesHQ checked Sep 28, 202611-5015 contacts →

Indirect evidence

“SEI's products and services are custom tailored to suit the needs of today's computer savvy REALTORS®.”

Source: RevenueBase Database · checked Sep 28, 2026
4Indirect evidenceSeverna Park, MD, United StatesHQ checked Sep 28, 202611-5013 contacts →

Indirect evidence

“With over 30 years of experience, MMSI is an industry leader and creator of Membership Director™, the most accurate, intuitive, and customizable membership and accounting system…”

Source: RevenueBase Database · checked Sep 28, 2026
5Partial evidenceWilmington, NC, United StatesHQ checked Sep 28, 202611-5010 contacts →

Partial evidence

“In the bustling hive of real estate, Hive MLS stands as a beacon of collaboration and efficiency.”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceBethesda, MD, United StatesHQ checked Sep 28, 202651-20010 contacts →

Indirect evidence

“With easy-to-use mobile technology fueled by unmatched, real-time data intelligence, Homesnap is changing the way real estate agents connect with consumers and serve their clients.”

Source: RevenueBase Database · checked Sep 28, 2026
7Indirect evidenceJupiter, FL, United StatesHQ checked Sep 28, 202611-507 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026
8Partial evidenceDenver, CO, United StatesHQ checked Sep 28, 202611-506 contacts →

Partial evidence

“Solid Earth provides technology solutions to MLSs and Realtor Associations.”

Source: RevenueBase Database · checked Sep 28, 2026
9Strong evidenceNew Haven, CT, United StatesHQ checked Sep 28, 20261-105 contacts →

Strong evidence

“Redwith designs, develops and deploys a suite of proprietary Residential Real Estate software solutions for practitioners and Multiple Listing Services (MLS's)”

Source: RevenueBase Database · checked Sep 28, 2026
10Partial evidenceBerkeley, CA, United StatesHQ checked Sep 28, 202611-505 contacts →

Partial evidence

“Bridge MLS is a regional Multiple Listing Service (MLS) incorporated in 1991 as a means to provide brokers and agents with a centralized and online source for real estate data in…”

Source: RevenueBase Database · checked Sep 28, 2026
11Partial evidenceNewark, DE, United StatesHQ checked Sep 28, 202611-504 contacts →

Partial evidence

“We are a technology company that serves MLS organizations, real-estate boards, and associations across the globe.”

Source: RevenueBase Database · checked Sep 28, 2026
12Partial evidencePittsburgh, PA, United StatesHQ checked Sep 28, 20261-104 contacts →

Partial evidence

“West Penn MLS is a Multiple Listing Service serving licensed real estate agents, Brokers, Realtors, Appraisers and Certified Home Inspectors.”

Source: RevenueBase Database · checked Sep 28, 2026
13Partial evidenceSandusky, OH, United StatesHQ checked Sep 28, 202611-504 contacts →

Partial evidence

“AdWriter is a complete one-stop solution for real estate agencies and brokerages that automates and streamlines the database management of MLS property listings and the scheduling…”

Source: RevenueBase Database · checked Sep 28, 2026
14Strong evidenceBeverly Hills, CA, United StatesHQ checked Sep 28, 202611-502 contacts →

Strong evidence

“In 2018, The MLS™ introduced a game-changing advancement in real estate technology, VestaPlus™ MLS Software Solutions.”

Source: RevenueBase Database · checked Sep 28, 2026
15Partial evidenceMason, OH, United StatesHQ checked Sep 28, 20261-101 contacts →

Partial evidence

“MFM Software – Serving the real estate industry for 25 years Although you may not recognize our name, chances are you already know our products.”

Source: RevenueBase Database · checked Sep 28, 2026
16Indirect evidenceSt. George, UT, United StatesHQ checked Sep 28, 20261-101 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 28, 2026

Showing 16 of 28 mls software developers based in the United States

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Mls software developers based in the United States at a glance

As of Sep 28, 2026
23.4%Verified-email coverage
19.4Average contacts per company
11-50Median size (employees)
7.1%Largest-city concentration · Milford
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
9
11-50
16
51-200
3

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 28 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among mls software developers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “mls software developers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names mls software developers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among mls software developers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 127 across the full list. 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 September 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names mls software developers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many mls software developers are there based in the United States?

RevenueBase identified 28 mls software developers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Rapattoni Corporation, headquartered in Westlake Village, tops this list with the largest team on record.

Which city has the most mls software developers?

Milford leads with 2 headquartered companies, followed by Anaheim (1) and Austin (1).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 127 verified decision-maker contacts tracked across these 28 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 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 Smart Search, 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.