Skip to main content

Company lists · Data refreshed September 2026

Top 25 Platform building firms based in Philadelphia, United States

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 66 companies tracked

RevenueBase identified 66 platform building firms headquartered in Philadelphia, United States as of September 2026 and tracks 680 professional contacts across them, including 199 with verified work emails. New York is the largest hub.

This list covers platform building firms headquartered in Philadelphia, 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.

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 HQ checked on every row Match evidence on every row Refreshed Sep 5, 2026 86% judged on-target in blind review
66Companies
680Contacts tracked
199Verified emails
Unlock all 66 companies Free signup · no credit card · 500 free credits

The 25 largest platform building firms based in Philadelphia, United States

Ranked by team size
Top 25 of 66 platform building firms based in Philadelphia, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. Evidence rates how directly each company's own description names platform building firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
InoxoftIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 2026201-500219

“Inoxoft is an award-winning custom software development company that builds industry-specific digital solutions for Healthcare, Fintech, Real Estate, Education, and Logistics.”

Source: company website · checked Sep 5, 2026
2
Think CompanyIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 202651-200125

“Think Company is an award-winning experience design and development consultancy.”

Source: company website · checked Sep 5, 2026
3
Xtreem SolutionIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 202651-20069

“Founded in 2008, XtreemSolution is an integrated Software Development, Mobile App Development, Web Design and Development and an SEO company.”

Source: company website · checked Sep 5, 2026
4
Dignitas DigitalIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 202611-5033

“Dignitas Digital is a full-service Digital Agency providing Custom Software Development, Web Design, Mobile App Development and Digital Marketing services.”

Source: company website · checked Sep 5, 2026
5
Engine RoomIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 202611-5017

“WE DESIGN, BUILD, AND SAFEGUARD your digital marketing solutions.”

Source: company website · checked Sep 5, 2026
6
ZivtechIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 202611-5012

“Founded in 2008, Zivtech is a full-service web design and development agency that specializes in open-source software.”

Source: company website · checked Sep 5, 2026
7
Jarvus InnovationsIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 202611-5011

“Jarvus is a civic technology consultancy that builds institutional capacity, not vendor dependence.”

Source: company website · checked Sep 5, 2026
8
Rise MarketingIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-109

“We’re Rise, an award-winning digital agency.”

Source: company website · checked Sep 5, 2026
9
Studio XIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-108

“Newly rebranded, Studio x.”

Source: company website · checked Sep 5, 2026
10
I-SiteIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-108

“I-SITE has been designing award-winning websites, software and interactive media since 1996.”

Source: company website · checked Sep 5, 2026
11
Byrd Alley, LLCIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 202611-507

“Byrd Alley takes projects from strategy to standing ovation.”

Source: company website · checked Sep 5, 2026
12
Ocean Ring TechnologiesIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-107

“Ocean Ring Technologies is a software solutions company specializing in Software Design and Development, Database Support for Architecture and Migration as well as Digital…”

Source: company website · checked Sep 5, 2026
13
SpellboundIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-107

“Spellbound conjures design focused solutions for clients, providing winning, conversion focused creative and seamless digital experiences.”

Source: company website · checked Sep 5, 2026
14
Allelo DesignIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-105

“Our impacts stretch far beyond the end-user.”

Source: company website · checked Sep 5, 2026
15
Pine WorksIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-105

“World-class apps, websites, and digital products.”

Source: company website · checked Sep 5, 2026
16
Lightning JARIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 202611-505

“Design, Build & Brand Technology Studio For twenty-five years, we've helped our clients adapt to a world that grows more relentlessly digital every day.”

Source: company website · checked Sep 5, 2026
17
Camelcase CollectiveIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-104

“camelCase is a collective of software engineers, designers, and strategists that specialize in crafting bespoke digital experiences.”

Source: company website · checked Sep 5, 2026
18
Restless LabsIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-104

“Restless Labs is a custom software architecture and development firm that combines innovative, custom software with advanced expertise to drive competitive advantage for…”

Source: company website · checked Sep 5, 2026
19
Self AwareIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-103

“Self Aware is the design and technology practice of Jenny Heintz & Mike Wagz.”

Source: company website · checked Sep 5, 2026
20
Pentridge MediaIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-103

“Pentridge Media is a digital innovation studio that helps entrepreneurs and organizations thrive in the AI age.”

Source: company website · checked Sep 5, 2026
21
Autech Consulting Group LLCIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-102

“AuTech is a digital consulting group focused on empowering businesses within emerging industries.”

Source: company website · checked Sep 5, 2026
22
Linden Ave. StudioIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-102

“Linden Ave Studio is a multidisciplinary creative studio with a design and technology focus.”

Source: company website · checked Sep 5, 2026
23
SkimraIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-101

“A creative agency specializing in UX/UI, Web, and Graphic Design services.”

Source: company website · checked Sep 5, 2026
24
Punching PixelsIndirect evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-101

“We're a versatile team of strategists, designers, and front-end developers, committed to creating digital spaces that users adore.”

Source: company website · checked Sep 5, 2026
25
Arion Research LLCPartial evidence
Philadelphia, PA, United StatesHQ checked Sep 5, 20261-101

“Helping companies compete in the new digital economy by selecting, implementing and optimizing their digital tools and platforms; and working with SaaS / Cloud providers to…”

Source: company website · checked Sep 5, 2026

Showing 25 of 66 platform building firms based in Philadelphia, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 199 reachable decision-makers.

Free signup · no credit card

See all 66 companies

Platform building firms based in Philadelphia, United States at a glance

As of Sep 5, 2026
1-10Median size (employees)
New YorkLargest hub · 801 HQs
Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
42
11-50
17
51-200
5
201-500
1
10001+
1

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Philadelphia, over 66 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 platform building firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Philadelphia, United States whose own description of what they do matches “platform building firms”. Matching reads each company's description, not its industry code or its name.
What we exclude
Companies whose own description does not clearly place them among platform building firms, and records with no verified work email. Companies headquartered outside Philadelphia 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 an evidence 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, 199 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 5, 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.

Platform building firms by metro in the United States

Frequently asked

How many platform building firms are there based in Philadelphia, United States?

RevenueBase identified 66 platform building firms headquartered in Philadelphia, 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?

Inoxoft, headquartered in Philadelphia, tops this list with the largest team on record.

Which city has the most platform building firms?

New York leads with 801 headquartered companies, followed by Austin (358) and Los Angeles (354).

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 199 verified decision-maker contacts tracked across these 66 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 5, 2026.

Ready to reach these companies? Verified emails and direct dials for all 66 platform building firms based in Philadelphia, United States. Start with a free account, no credit card.

Get the full list

Related lists

Browse: Companies home · Platform building firms in United States · All United States lists · All Platform building firms lists · New lists

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.

More company lists