Company lists · Data refreshed September 2026

Top 25 Custom software development startups based in Alpharetta, United States

Name: Custom software development startups based in Alpharetta, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 78 companies tracked

RevenueBase identified 78 custom software development startups headquartered in Alpharetta, United States as of September 2026 and tracks 3,862 professional contacts across them, including 585 with verified work emails. Across the United States, New York is the largest hub for this category (566 companies); Alpharetta has 78.

This list covers custom software development startups headquartered in Alpharetta, 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 29, 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 29, 2026 86% judged on-target in blind review

78Companies

3,862Contacts tracked

585Verified emails

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The 25 largest custom software development startups based in Alpharetta, United States

Ranked by team size

Top 25 of 78 custom software development startups based in Alpharetta, United States, ranked by team size, largest first. Data refreshed Sep 29, 2026. RevenueBase Smart Search rates how each company's information relates to custom software development startups: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Relevantz	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	1,001-5,000	1,164 contacts →
	Strong evidence “We are in the business of custom software engineering.” Source: RevenueBase Database · checked Sep 29, 2026
2	KGS Technology Group, INC	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	501-1,000	339 contacts →
	Strong evidence “KGS Technology Group is a multinational IT consulting and software development firm headquartered in Alpharetta, GA, with delivery centers in India.” Source: RevenueBase Database · checked Sep 29, 2026
3	Conflux Systems	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	51-200	308 contacts →
	Indirect evidence “Conflux Systems, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
4	UST Xpanxion	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	501-1,000	294 contacts →
	Partial evidence “UST Xpanxion provides product development and engineering services to enterprise clients in a variety of industries worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
5	Valzo Soft Solutions	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	1,001-5,000	286 contacts →
	Indirect evidence “ValzoSoft Solutions – Driving Innovation, Empowering Growth At ValzoSoft Solutions, we turn visionary ideas into transformative digital experiences.” Source: RevenueBase Database · checked Sep 29, 2026
6	Telliant Systems	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	51-200	153 contacts →
	Strong evidence “Telliant is a custom software product development, testing and technology consulting services company, serving business partners globally.” Source: RevenueBase Database · checked Sep 29, 2026
7	Concept Software & Services INC	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	51-200	105 contacts →
	Partial evidence “Concept Software & Services, Inc.(CSS) is a leading US-based Software Solutions Company that offers a wide range of value-added services to support the growth and success of small…” Source: RevenueBase Database · checked Sep 29, 2026
8	Nexzentek Solutions INC	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	201-500	85 contacts →
	Indirect evidence “NexZenTek is a leading global Information Technology company that combines tech expertise and business intelligence to catalyze change and deliver results.” Source: RevenueBase Database · checked Sep 29, 2026
9	Spiralogics, INC	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	51-200	83 contacts →
	Strong evidence “Spiralogics is a global leader in custom software development and emerging AI solutions across diverse industries worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
10	Nebula Partners	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	51-200	72 contacts →
	Strong evidence “Nebula Partners is an enterprise solution company based in Atlanta and provides custom information technology, consulting in Application Development and Maintenance (Mobile…” Source: RevenueBase Database · checked Sep 29, 2026
11	Techmentee, INC	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	51-200	48 contacts →
	Strong evidence “Techmentee is the leading software development company in Atlanta, GA, USA, offering innovative IT solutions and digital transformation services to businesses worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
12	SUM Global Technology	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	11-50	34 contacts →
	Strong evidence “SUM Global provides technical services for all phases of a software development project.” Source: RevenueBase Database · checked Sep 29, 2026
13	Rivi Consulting Group L.L.C	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	51-200	31 contacts →
	Indirect evidence “RiVi Consulting Group L.L.C (RiVi) is a strategic technology partner helping companies in various industry verticals achieve operational excellence.” Source: RevenueBase Database · checked Sep 29, 2026
14	Tier One, INC	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	n/a	31 contacts →
	Strong evidence “Tier One provides product development services for custom software and electronics.” Source: RevenueBase Database · checked Sep 29, 2026
15	M3 Consulting INC	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	11-50	29 contacts →
	Partial evidence “M3 Consulting's mission is to create "software that works for you, not the other way around." Established in 2004 in Atlanta, Georgia, M3 Consulting is a Technology consulting…” Source: RevenueBase Database · checked Sep 29, 2026
16	Dsys INC	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	51-200	20 contacts →
	Strong evidence “DSYS is a focused global and innovative provider of software development, consulting services to midsize and fortune 500 companies to make them more competitive, productive, and…” Source: RevenueBase Database · checked Sep 29, 2026
17	SL Consulting	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	11-50	19 contacts →
	Indirect evidence “SL is an advanced business and technology consulting company with more than 20 years’ experience in creating value for our clients by providing trusted consulting solutions…” Source: RevenueBase Database · checked Sep 29, 2026
18	Nthline Solutions, LLC	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	11-50	19 contacts →
	Strong evidence “NthLine Solutions LLC, established in 2015 and headquartered in Alpharetta, Georgia is a software development and service company that provides superior IT consulting and…” Source: RevenueBase Database · checked Sep 29, 2026
19	SUN Cloud LLC	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	11-50	18 contacts →
	Strong evidence “An IT consulting firm providing services and solutions in Business Applications in Microsoft, Oracle and Open Source technologies; IT Services in Software Development, Web…” Source: RevenueBase Database · checked Sep 29, 2026
20	18techs	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	11-50	14 contacts →
	Indirect evidence “Incredible programmers, superior developers, veteran consultants, & steadfast solutions.” Source: RevenueBase Database · checked Sep 29, 2026
21	Radiant Technologies	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	51-200	14 contacts →
	Strong evidence “Radiant Technologies Software Consulting & Solutions are engineers in software development, project management, business intelligence, IT infrastructures ERP and web-based…” Source: RevenueBase Database · checked Sep 29, 2026
22	Mindharbor, INC	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	11-50	13 contacts →
	Strong evidence “MindHARBOR is an Atlanta-based application development and business intelligence firm, specializing in custom solutions for manufacturing, wholesale distribution, and…” Source: RevenueBase Database · checked Sep 29, 2026
23	Elegant Software Solutions, INC	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	11-50	10 contacts →
	Strong evidence “Elegant Software Solutions is a team of technologists whose commitment to excellence and customer service is our highest mission.” Source: RevenueBase Database · checked Sep 29, 2026
24	Avps Technologies INC	Partial evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	11-50	9 contacts →
	Partial evidence “At AVPS Technologies Inc, we specialize in providing comprehensive IT development and managed IT services to businesses looking to enhance their technology infrastructure and…” Source: RevenueBase Database · checked Sep 29, 2026
25	Mimasoft	Strong evidence	Alpharetta, GA, United StatesHQ checked Sep 29, 2026	1-10	8 contacts →
	Strong evidence “Software Development, Application Development, App Development, Application Migration, Cloud Migration, App Modernization, Database Migration Solutions Architecting, Project…” Source: RevenueBase Database · checked Sep 29, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: custom software development startups. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names custom software development startups.
Partial evidence: Its own public description names part of custom software development startups, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom software development startups. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 78 custom software development startups based in Alpharetta, United States

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Custom software development startups based in Alpharetta, United States at a glance

As of Sep 29, 2026

15.1%Verified-email coverage

49.5Average contacts per company

11-50Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Alpharetta, so it is reported there. Company counts and contact totals on this page are exact for Alpharetta, over 78 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 custom software development startups, 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 Alpharetta, United States whose own description of what they do matches “custom software development startups”. 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 custom software development startups), 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 custom software development startups, and records with no verified work email. Companies headquartered outside Alpharetta 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, 585 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 29, 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.

Custom software development startups by metro in the United States

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 custom software development startups, 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 custom software development startups are there based in Alpharetta, United States?

RevenueBase identified 78 custom software development startups headquartered in Alpharetta, 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?

Relevantz, headquartered in Alpharetta, tops this list with the largest team on record.

Which city in the United States has the most custom software development startups?

New York leads the United States with 566 headquartered companies, followed by Austin (351) and Houston (252). Alpharetta has 78.

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 585 verified decision-maker contacts tracked across these 78 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 29, 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.