Company lists · Data refreshed September 2026

Top 25 Custom SaaS developers based in Chicago, United States

Name: Custom SaaS developers based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 29, 2026 101 companies tracked

RevenueBase identified 101 custom SaaS developers headquartered in Chicago, United States as of September 2026 and tracks 1,017 professional contacts across them, including 352 with verified work emails. Across the United States, New York is the largest hub for this category (241 companies); Chicago has 101.

This list covers custom SaaS developers headquartered in Chicago, 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

101Companies

1,017Contacts tracked

352Verified emails

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The 25 largest custom SaaS developers based in Chicago, United States

Ranked by team size

Top 25 of 101 custom SaaS developers based in Chicago, 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 SaaS 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Q1 Technologies, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1,001-5,000	262 contacts →
	Indirect evidence “Q1 Technologies is a global IT solutions and services provider focused on delivering innovative, scalable, and high-impact technology outcomes for enterprises worldwide.” Source: RevenueBase Database · checked Sep 29, 2026
2	Soliant Consulting	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	76 contacts →
	Partial evidence “At Soliant, we build custom software solutions that break down growth barriers and open doors to new opportunities.” Source: RevenueBase Database · checked Sep 29, 2026
3	Simetrica Consulting	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	40 contacts →
	Indirect evidence “Simetrica Consulting is a computer software company based out of Ave.” Source: RevenueBase Database · checked Sep 29, 2026
4	Echelon Consulting, L.L.C	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	37 contacts →
	Indirect evidence “Echelon Consulting, LLC.” Source: RevenueBase Database · checked Sep 29, 2026
5	Alpha Efficiency	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	35 contacts →
	Indirect evidence “Alpha Efficiency engages in research and development of high leverage software solutions for business purposes.” Source: RevenueBase Database · checked Sep 29, 2026
6	PLEGO	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	51-200	33 contacts →
	Partial evidence “Plego is a global web, mobile, Artificial Intelligence, and custom software development agency with offices in Chicago, Houston, Milwaukee, Dubai, Riyadh and Karachi.” Source: RevenueBase Database · checked Sep 29, 2026
7	Aptlylabs	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	24 contacts →
	Indirect evidence “Empower your startup's vision by partnering with us to craft robust technology infrastructure tailored to your unique needs.” Source: RevenueBase Database · checked Sep 29, 2026
8	Phycom, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	20 contacts →
	Indirect evidence “At Phycom, we don't just develop software – we get things done.” Source: RevenueBase Database · checked Sep 29, 2026
9	Friendly Solutions Corp	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	17 contacts →
	Indirect evidence “We are an information technology consulting firm, dedicated to providing comprehensive technology solutions for specific business needs.” Source: RevenueBase Database · checked Sep 29, 2026
10	Vault Innovation Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	15 contacts →
	Partial evidence “VAULT offers custom software solutions, digital experiences and growth services for tech-enabled businesses, entrepreneurs and visionaries.” Source: RevenueBase Database · checked Sep 29, 2026
11	Prudence	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	13 contacts →
	Partial evidence “Custom Software Development: We specialize in delivering custom software development for both startups and established companies, tailored to meet your unique needs.” Source: RevenueBase Database · checked Sep 29, 2026
12	CSW Solutions	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	12 contacts →
	Partial evidence “CSW Solutions is a Chicago-based technology partner specializing in custom software development, AI-driven solutions, code auditing, and managed IT services.” Source: RevenueBase Database · checked Sep 29, 2026
13	Nova Libra, INC	Indirect evidence	Chicago, United StatesHQ checked Sep 29, 2026	1-10	11 contacts →
	Indirect evidence “Nova Libra specializes in the maintenance and distribution of product information.” Source: RevenueBase Database · checked Sep 29, 2026
14	DVC Solutions	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	10 contacts →
	Partial evidence “DVC Solutions is an international technology company specializing in mission-critical IT infrastructure, system integration, cyber defense, custom software development, data…” Source: RevenueBase Database · checked Sep 29, 2026
15	Spantree Llc, A Trifork Company	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	9 contacts →
	Indirect evidence “Spantree is a Chicago-based consultancy delivering intelligent, high quality software solutions for the web.” Source: RevenueBase Database · checked Sep 29, 2026
16	Reintivity	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	8 contacts →
	Indirect evidence “Empowering your business through cutting-edge cloud and IT solutions, Reintivity Technology Solutions is your trusted partner in driving technological innovation and operational…” Source: RevenueBase Database · checked Sep 29, 2026
17	Eight-Bot, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	7 contacts →
	Indirect evidence “EIGHT BOT is NOT your traditional Enterprise development shop.” Source: RevenueBase Database · checked Sep 29, 2026
18	Click5 Interactive LLC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	7 contacts →
	Indirect evidence “Based in downtown Chicago, click5 Interactive is a small (but growing) team of creative technologists.” Source: RevenueBase Database · checked Sep 29, 2026
19	Amplify Tech Labs	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	6 contacts →
	Indirect evidence “At Amplify Tech Labs, we don’t just build software-we drive measurable results.” Source: RevenueBase Database · checked Sep 29, 2026
20	Oscillas Technologies, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	5 contacts →
	Indirect evidence “At Oscillas, we work closely with our clients to understand their business processes so that we can effectively and efficiently apply unique and industry-leading technological…” Source: RevenueBase Database · checked Sep 29, 2026
21	Chicago Software Solutions C S S	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	5 contacts →
	Partial evidence “Chicago Software Solutions (C\|S\|S) is a dynamic leader in custom software development and technology consulting with over 17 years of experience.” Source: RevenueBase Database · checked Sep 29, 2026
22	606 Digital	Partial evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	4 contacts →
	Partial evidence “606 Digital is a technology consulting firm that offers custom software solutions, development, support, and consulting services.” Source: RevenueBase Database · checked Sep 29, 2026
23	Erws, INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	4 contacts →
	Indirect evidence “Based in Chicago, IL, eRWS, Inc.” Source: RevenueBase Database · checked Sep 29, 2026
24	Ophanic	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	1-10	3 contacts →
	Indirect evidence “At Ophanic, we specialize in creating tailored software solutions designed to empower businesses and streamline operations.” Source: RevenueBase Database · checked Sep 29, 2026
25	Databender	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 29, 2026	11-50	3 contacts →
	Indirect evidence “Rethink what's possible.” 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 SaaS developers. 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 SaaS developers.
Partial evidence: Its own public description names part of custom SaaS developers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name custom SaaS developers. 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 101 custom SaaS developers based in Chicago, United States

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Custom SaaS developers based in Chicago, United States at a glance

As of Sep 29, 2026

34.6%Verified-email coverage

10.1Average contacts per company

11-50Median size (employees)

Sep 29, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 101 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 SaaS 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 Chicago, United States whose own description of what they do matches “custom SaaS 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 custom SaaS 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 custom SaaS developers, and records with no verified work email. Companies headquartered outside Chicago 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, 352 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 SaaS developers 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 SaaS 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 custom SaaS developers are there based in Chicago, United States?

RevenueBase identified 101 custom SaaS developers headquartered in Chicago, 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?

Q1 Technologies, INC, headquartered in Chicago, tops this list with the largest team on record.

Which city in the United States has the most custom SaaS developers?

New York leads the United States with 241 headquartered companies, followed by Austin (158) and Houston (114). Chicago has 101.

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 352 verified decision-maker contacts tracked across these 101 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.