3 Houston companies land on Deloitte’s Technology Fast 500 list

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Three Houston companies ranked on Deloitte's annual list, with two cracking the top 100. Photo via Getty Images

Three Houston companies have made this year’s Deloitte North America Technology Fast 500 list.

The report ranks the fastest-growing technology, media, telecommunications, life sciences, fintech, and energy tech companies in North America. The Houston companies to make the list, along with their revenue growth rates from 2021-2024, include:

  • No. 16 Action1 Corp., a provider of cybersecurity software. Growth rate: 7,265 percent
  • No. 92 Cart.com, a commerce and logistics platform. Growth rate: 1,053 percent
  • No. 312 Tellihealth, a remote health care platform. Growth rate: 244 percent

“Houston’s unique blend of entrepreneurial energy and innovation continues to strengthen the local business community, and I’m thrilled to see Houston companies honored on the 2025 Deloitte Technology Fast 500 list. Congratulations to all the winners,” said Melinda Yee, managing partner in Deloitte’s Houston office.

Action1 is no stranger to lists like the Deloitte Technology Fast 500. For instance, the company ranked first among software companies and 29th overall on this year’s Inc. 5000, a list of the country’s fastest-growing private companies. Its growth rate from 2021 to 2024 reached 7,188 percent.

Mike Walters, president and co-founder of Action1, said in August that the Inc. 5000 achievement “reflects the dedication of Action1’s global team, who continue to execute against an ambitious vision: a world where cyberattacks exploiting vulnerabilities are entirely prevented across all types of devices, operating systems, and applications.”

Atlanta-based Impericus, operator of an AI-powered platform that connects health care providers with pharmaceutical and life sciences companies, topped the Deloitte list with a 2021-24 growth rate of 29,738 percent.

“Our mission is to set the standard for ethical AI-powered physician connections to pharma resources, accelerating and expanding patient access to needed treatments,” said Dr. Osama Hashmi, a dermatologist who’s co-founder and CEO of Impiricus. “As we continue to innovate quickly, we remain committed to building ethical bridges across this vital ecosystem.”

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These are the four fastest-growing tech companies in Houston, according to Deloitte. Photo by Shobeir Ansar/Getty Images

4 fast-growing Houston tech companies secure spots on Deloitte list

big wins

Deloitte’s annual North America Technology Fast 500 list includes four Houston companies this year — all boasting of significant growth.

For Houston, Direct Digital Holdings, Inc. took the highest-ranking spot at No. 101 (up from 108 previous year) with 1,184 percent growth. NatGas Hub LLC (No. 286, 407 percent growth), Liongard (No. 437, 246 percent growth), and Stratus Medical LLC (No. 483, 212 percent growth) also made the list, which is an annual ranking of the fastest-growing North American companies in technology, energy tech sectors, telecommunications, life sciences, media, and fintech.

"Houston continues to demonstrate its prowess in fostering growth and technological advancement and I’m incredibly proud to see some of our local companies making significant strides and earning their well-deserved spots on the 2024 Deloitte Technology Fast 500 list,” Houston managing partner at Deloitte Melinda Yee says in a news release.

Award winners were selected based on fiscal year revenue growth from 2019 to 2022.

The companies achieved revenue growth ranging from 201 percent to 153,625 percent over the three-year time frame with an average growth rate of 1,981 percent and a median growth rate of 460 percent, according to a news release. Texas accounts for 6 percent of the winning companies with 73 percent of the companies from Texas are in the software sector.

“These companies exemplify the entrepreneurial spirit and innovative mindset that define Houston's dynamic business ecosystem,” Yee adds.

In 2023, the Houston representation looked similar. Direct Digital Holdings again topped the Houston rankings at No. 108, with Liongard, NatGasHub.com, and P97 Networks also showing substantial growth. As a state, Texas had 30 companies that made the list of the 541 ranked. In 2022, just one Houston company was recognized, as at No. 372 Onit reported revenue increase of 369 percent.

Biopharmaceutical company TG Therapeutics, Inc. was the No.1 spot in 2024 with a growth rate of 153,625 percent from 2020 to 2023. See the full list here.
Three Houston tech companies are seeing big business growth, according to Deloitte's report. Graphic via Deloitte

3 Houston companies make Deloitte's fastest-growing tech list

biz is booming

Three Houston companies have earned spots on this year's edition of the North American Technology Fast 500.

The three Houston honorees are:

  • Enercross, a provider of logistics software for the energy sector. It appears at No. 31 on the Fast 500 list, with revenue growth of 6,230 percent from 2017 to 2020.
  • Onit, which offers workflow and AI technology for legal, compliance, sales, IT, HR, and finance departments. It lands at No. 304, with a 408 percent rise in revenue from 2017 to 2020. According to Crunchbase, Onit has reeled in $216.6 million in venture capital.
  • Graylog, a provider of log management software. It sits at No. 309, with revenue growth of 402 percent from 2017 to 2020. Graylog has collected $27.4 million in venture capital, according to Crunchbase. That includes an $18 million round announced this summer.

The North America Technology Fast 500, sponsored by professional services firm Deloitte, is an annual ranking of the fastest-growing tech, media, telecom, life sciences, and energy tech companies in North America.

"The Houston companies on this year's Fast 500 list are transforming the way our city does business by combining technological innovation with entrepreneurial spirit," Amy Chronis, Houston managing partner at Deloitte, says in a news release. "I'm inspired by the ways these organizations have succeeded amid unprecedented times, and I look forward to seeing their progress in 2022."

The top-ranked company is Irvine, California-based medical device company Axonics, whose revenue soared 87,037 percent from 2017 to 2020. The top-ranked Texas company is Austin-based Shipwell, where revenue climbed 32,670 percent from 2017 to 2020. Shipwell provides a shipment-tracking platform. Overall, 5 percent of the Fast 500 companies are based in Texas.

Both Enercross and Onit showed up on last year's Fast 500. Enercross ranked 37th in 2020, with revenue growth of 5,881 percent, and Onit ranked 190th, with revenue growth of 641 percent. Meanwhile, Graylog is a new entrant this year.

Two Houston companies fell off the Fast 500 this year:

  • Lexicon Pharmaceuticals, which ranked 328th last year with revenue growth of 306 percent.
  • Vendor Credentialing Services (symplr), a tech platform that simplifies vendor services, compliance, and more for health professionals. It appeared at No. 426 last year, notching revenue growth of 221 percent.

Not surprisingly, Silicon Valley accounted for one-fifth of the companies in this year's Fast 500, followed by the New York City metro area (12 percent) and New England (8 percent). Nearly three-fourths of the Fast 500 companies specialize in software, and 81 percent of the companies have received venture capital at some point.

"Each year, the Technology Fast 500 shines a light on leading innovators in technology, and this year is no exception," says Paul Silverglate, leader of the U.S. technology sector at Deloitte. "In the face of innumerable challenges resulting from the pandemic, the best and brightest were able to pivot, reinvent and transform and grow."

Four Houston-based companies have been ranked among the country's fastest growing tech businesses. Photo via Getty Images

4 Houston companies make fastest-growing tech biz list

H-town representing

In a newly released annual ranking, four Houston-based technology companies scored spots.

Deloitte's 26th annual North America Technology Fast 500 is an annual ranking of the fastest-growing North American companies across tech sectors. The companies on the list were selected based on percentage fiscal year revenue growth from 2016 to 2019. The Houston companies that made the top 500 were:

  • No. 37 (5,881 percent growth): Enercross — An oil and gas logistics software company.
  • No. 190 (641 percent growth): Onit — A B2B software company that designs streamlining solutions.
  • No. 328 (306 percent growth): Lexicon Pharmaceuticals Inc. — A biopharmaceutical company developing treatments for diseases.
  • No. 426 (221 percent growth): Vendor Credentialing Services (aka symplr)— A tech platform that simplifies vendor services, compliance, and more for health professionals.

"The varied industries represented in this year's local Fast 500 winners is evidence of Houston's positive momentum in diversifying its core competencies beyond the energy sector," says Amy Chronis, Houston managing partner at Deloitte, in the release. "Innovation continues to be the driving force behind our city's evolution, and the Fast 500 winners are helping spur its progress. They inspire and provide a glimpse into our future."

According to the release, the 2020 Technology Fast 500 companies achieved revenue growth ranging from 175 percent to 106,508 percent over the three-year time frame, with a median growth rate of 450 percent.

Silicon Valley-based companies dominated the list, accounting for the top three companies as well as 20 percent of the entire list. The second largest region represented was New York, with 13 percent of the list.

In terms of sector, software has the biggest hold on the ranking with 71 percent of the companies being categorized in that realm, which is the highest percentage Deloitte has ever seen in this study.

The report also looked ate venture backing and found that this year 81 percent of the 500 fastest-growing tech companies received venture funding, which includes, according to the release, 26 of the top 30 companies.

"Each year the Technology Fast 500 listing validates how important technology innovation is to our daily lives. It was interesting to see this year that while software companies continued to dominate, biotech companies rose to the top of the winners list for the first time, demonstrating that new categories of innovation are accelerating in the pursuit of making life easier, safer and more productive," says Mohana Dissanayake, partner at Deloitte, in the release. "We extend our congratulations to these well-deserved winners — who all embody a spirit of curiosity, and a never-ending commitment to making technology advancements possible."

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10+ can't-miss Houston business and innovation events for September

where to be

The energy transition and AI will be the talk of this town this month, thanks to a packed calendar of Houston events. September brings the return of Houston Energy and Climate Startup Week and some of its signature anchor events, plus AI conferences and talks exploring how the technology is impacting everything from healthcare to leadership. Here’s what not to miss and how to register. Please note: this article may be updated to add more events.


Sept. 3 — Entrepreneurship Roundtable with Open

Open Houston and the Ion present this roundtable event to bring together founders, builders, and innovators at various stages of venture development. This month's session will feature Faisal Bhutto, president and CEO of Houston-based AI and tech consulting firm Alykas.

This event is Thursday, Sept. 3, from 10-11:30 a.m. at the Ion. An optional lunch ticket is available for purchase. Register here.

Sept. 3 — AI Operator Spotlight: Houston’s Top AI Leaders Open Their Playbooks

The Houston AI Club, Allenix, the Ion District and Collide are bringing together industry leaders to share their expertise and first-hand experiences building AI companies. The event will feature a panel with Chuck Yates, co-founder of Collide, and Charles Jessup, senior manager of AI fluency at Raytheon, plus an open networking session.

This event is Thursday, Sept. 3, from 5:30-8 p.m. at the Ion. Register here.

Sept. 8 — The Technology Leadership Advantage Series – For CEOs, VCs and PE Firms

Ram Prasad, CEO of Houston-based IT consulting firm Delence, will explore the role of leadership in turning AI investments into business value during the latest installment of this series at the Ion. The event will explore why AI strategies often fail before the technology does and how companies should approach AI ownership, governance, investment and accountability.

This event is Tuesday, Sept. 8, from noon-1 p.m. at the Ion. Register here.

Sept. 14–18 — Houston Energy and Climate Startup Week

Houston Energy and Climate Startup Week returns for its third year, with panels, happy hours and pitch days focused on the energy transition. See the schedule of events here. The week will begin with a kickoff block party and open house at the Ion.

This event starts Monday, Sept. 14. The Ion District will host many of the week's events. Find more information here.

Sept. 15 — Meet the Activate Houston Cohort 2026 Fellows

Meet Activate's latest cohort, which was named this summer, and learn more about their hardtech and climate-focused solutions. Also meet founders from the organization’s 2025 cohort during Houston Energy and Climate Startup Week.

This event is Tuesday, Sept. 15, from 5-7 p.m. at the Ion. Register here.

Sept. 15 – Cypher Pilotathon and Startup Showcase

Grab coffee and take in keynotes and panels featuring leaders from Amperon, Aramco Ventures, New Climate Ventures, Syzygy Plasmonics and many others during this signature event, this year under the theme “The NEW Energy Industrial Revolution.” After lunch, hear pitches from 31 ventures during the Pilotathon. This year's event will also feature a startup showcase with interactive booths where attendees can meet founders and see demonstrations, plus an industry hub where corporates and investors can engage with emerging technologies and identify the pilots they want to move forward with.

This event is Tuesday, Sept. 15, from 9 a.m.-5 p.m. at POST Houston. Get tickets here.

Sept. 15-17 — The AI in Health Conference

Rice University's Ken Kennedy Institute will present this future-focused event, aimed at bridging the gap between artificial intelligence and real-world health outcomes. The event will feature panels with leaders from institutions and companies from around the world, plus technical talks, poster presentations and networking receptions.

This event begins Tuesday, Sept. 15 at 8 a.m. at the BRC at Rice University. Register here.

Sept. 16 — Greentown Labs Climatech Summit

Entrepreneurs, investors, corporate leaders, policymakers and philanthropists will head to Houston this month for the annual Greentown Climatetech Summit. Hear from Greentown CEO Georgina Campbell Flatter and keynote speaker Tim Latimer, CEO and co-founder of Houston geothermal unicorn Fervo Energy, plus numerous other engaging panels at the Ion. Then head to Greentown Labs for an open house and startup showcase, where attendees can meet some of the climatech incubators' members, before taking in the startup pitch competition followed by happy hour over at the Continental Club.

This event is Wednesday, Sept. 16, from 8 a.m.–9 p.m. at multiple locations. Register here.

Sept. 18 — Rice Alliance Energy Tech Venture Forum

Hear from clean energy startups from around the world at the 23rd annual Energy Tech Venture Forum. In addition to the pitches, this event will also host keynotes from Sean Maher, chief economist at Phillips 66, and Ira Ehrenpreis, founder and managing partner of DBL Partner. Panels will focus on technologies, infrastructure and commercialization strategies needed to deploy breakthrough innovations at scale. Following the event, the Rice Alliance will also name its annual “Most Promising” startup.

This event is Thursday, Sept. 17, from 7:30 a.m.-5 p.m. at Rice University’s Jones Graduate School of Business. Register here.

Sept. 23 – Houston Methodist Innovation Discussion

Houston Methodist presents its latest Innovation Discussion this month for the Houston health IT community. This month's event will feature Dr. Jordan Dale, chief medical information officer and chief health AI officer at Houston Methodist, and Ginny Torno, executive director of innovation and IT clinical, ancillary and research systems for Houston Methodist. The two will share insights into Houston Methodist’s innovation strategy and approach to scaling new ideas, plus real-world lessons on AI adoption and more.

This event is Wednesday, Sept. 23, from 5:30-7 p.m. at the Ion. Register here.

Sept. 23 — UH Energy Career Fair

Find your next job or team member at UH's energy-focused career fair. The event will feature companies from the fossil fuels, electrical power, nuclear power and renewables industries; plus nonprofits, governmental agencies and startups. And though the event is geared toward business, engineering, technology and science majors, it is open to students of all majors.

This event is Wednesday, Sept. 23, from 11 a.m.-2 p.m. at the UH Student Center. Find more information here.

Sept. 30 — First Principles Tech Talk: From Orbit to the Lunar Surface

Head to the Ion for the first-ever First Principles Tech Talk. This event will feature short talks and moderated discussions geared toward founders, engineers and operators in the commercial space industry. The inaugural event will feature Megan Ortiz and Zach Paugh from Houston-based Axiom Space.

This event is Wednesday, Sept. 30, from 5-7 p.m. at the Ion. Register here.

Momentum is where Houston founders go to break $1 million — apply by Sept. 30

Inside EO

Houston loves a startup story. The harder story, the one that decides whether a company becomes an employer, a brand, and a fixture of the city, is what happens after the start. Most businesses that survive their early years still never cross $1 million in revenue. Fewer than 5 percent ever do. The rest get stuck in the messy middle, somewhere between $250,000 and $1 million, where the owner is still the salesperson, the product, and the back office all at once, and nothing runs without them.

Momentum, the accelerator run by EO Houston, exists for exactly that stage. It is a yearly accelerator for owners and co-founders between $250,000 and $1 million in revenue who are ready to push past seven figures, built around eight months of classes a year and a confidential monthly Forum. Members are invited to go through it for two years: the first pass to build the systems, the second to run them at a higher level, with a new lens and alongside a new cohort.

The next cohort launches in October, with applications open now at eohouston.com/momentum until September 30. Here is the case the chapter makes for joining, point by point.

A curriculum built by operators, not consultants

Momentum's curriculum was built by two operators. Al Danto, an EO Houston founding member who built and exited his own company, is now a Partner at Exit Advisors and a Senior Lecturer in Entrepreneurship at Rice University. He built the curriculum alongside Jacky Fischer, the owner of Houston's 3 Men Movers, who brought a working owner's eye, not an academic one, to how the program is structured. The material covers what actually decides whether a company scales: building systems, hiring and leading a team, and turning an annual vision into 90-day commitments with clear owners.

“Everything in this curriculum got tested inside a real company, either mine or one run by the people who shaped it. If a tool did not survive contact with a real business, it did not make the cut," Danto says.

Momentum is an independent program of EO Houston and requires no university affiliation; faculty and alumni participate as instructors and coaches in their individual capacities. What carries over is the standard: real experience over theory.

EO Houston Momentum classroom A Momentum class in session. Photo courtesy of EO Houston

Entrepreneurs teaching entrepreneurs since 1987

Momentum works because of what sits behind it. The Entrepreneurs' Organization was founded in 1987 on a simple idea: business owners grow fastest alongside peers who have already been where they are going. Today, EO is a global, peer-to-peer network spanning 200+ chapters in over 80 countries, and it runs on a practice called Forum, a small, confidential group of six to 10 fellow owners who meet monthly. Forum members do not give advice. They share experience: what actually happened when they faced the same hire, the same cash crunch, the same decision. Ask EO members anywhere in the world and most will call Forum the single most valuable thing they belong to. Every Momentum member sits in one.

Built for scaling small businesses, not launching startups

Houston's accelerator landscape mostly serves the very early stage: the idea, the pitch deck, the startup swinging for a billion-dollar outcome. Momentum sits in the gap those programs leave behind. It is built for regular companies that are already real, with revenue, payroll, and customers, and an owner who needs help scaling what works into a business that matures. That focus is the point: EO Houston is the place a small business goes to get help growing.

The price is different too. Accelerators usually charge in ownership, a stake in the company in exchange for the program. Momentum takes none. EO Houston is a nonprofit, and the program runs on dues of $3,500 for the year. The outcome the chapter is after is simple: more Houston businesses crossing $1 million, still fully owned by the people who built them.

An on-ramp into Houston's most established founder community

EO Houston counts more than 200 member businesses, every one run by an owner who has already scaled past $1 million, with 75+ chapter events a year. Momentum members plug into that community from day one: the classes, their own Forum, the annual gala, the retreats, the socials. Two years around people who have already done the thing you are trying to do changes what you believe is normal. And when a Momentum member crosses $1 million, the on-ramp becomes a doorway: graduates step into EO Houston membership itself and the global network behind it. The program's full story and curriculum live at eomomentum.com.

Avneesh Oberoi, founder of Oberoi Investments and The DoughCone, walked that path, finishing the program and joining EO Houston in July 2026.

“I truly can say that the experience for the last two years has been life-changing and so memorable… I am also so filled with gratitude to have met so many people open to sharing their experiences and time. It’s made such a difference in how I think, operate, and spend my time and resources," Oberoi says. "I joined with the goal of taking my business I started personally, The DoughCone, and figuring out how to optimize the business and maximize revenue, while navigating a board seat and ownership in a much larger family business on its third generation of ownership… and EO has given me so many tools and experience shares and perspectives I’ve been able to take to both businesses. The growth has been unreal.”

The door swings both ways. EO Houston is opening Momentum to its own members too, owners whose companies average $3 million to $5 million in sales, because the chapter believes the same curriculum and Forum that carry a founder to $1 million keep working well past it.

Sarah Seitz shows how the pieces connect. A former teacher, she founded The Enrichery, a Houston education company offering academic coaching, test prep, and college counseling that has grown to locations across the city. She completed the Goldman Sachs 10,000 Small Businesses program, then joined EO Houston to keep growing. This year, a year after joining, The Enrichery made the Inc. 5000 list of America's fastest-growing private companies. She coached Momentum through its first year, and has since moved from coaching into leadership, helping shape the program's growth from its board.

For owners finishing a program like 10,000 Small Businesses who are not yet at $1 million, Momentum is where the coaching and community continue until they qualify for EO.

Apply by September 30

Momentum's next cohort begins in October 2026, and applications close September 30. The program is for owners and co-founders of Houston businesses doing more than $250,000 a year who are ready to build past $1 million, and now for EO Houston members ready to keep growing. The full curriculum, dues, dates, and FAQ are on the application page. Apply by September 30 at eohouston.com/momentum.

Fewer than 5 percent of businesses make it past $1 million, and there is nothing inevitable about which 5 percent. Houston has the founders. Momentum exists to give them the systems and the peers.

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EO Houston is the Houston chapter of the Entrepreneurs' Organization, a global peer-to-peer network of business owners founded in 1987, with more than 200 member businesses and 75+ chapter events a year. Momentum is an independent program of EO Houston. Rice University faculty and alumni participate as instructors and coaches in their individual capacities.

Tesla proposes Houston-area solar plant & more top innovation headlines

Trending news

Editor's note: August proved to be a big month for innovation news in Houston, with big plans revealed by Tesla, the expansion of Apple's Houston footprint, and an update on the MD Anderson-anchored medical center planned for Austin. Below are the five most-read InnovationMap headlines published during the second half of August 2026:

Telsa targets Houston area for new $10 billion manufacturing plant

Electric vehicle and clean energy company Tesla is considering building a new $10.1 billion solar cell manufacturing facility in Fort Bend County, according to documents filed with the Texas Comptroller’s Office. If approved, the plant, called Project Sun City, would be located on a 3,050-acre site off FM 762 and FM 1994 in Richmond, Texas. Tesla aims to finish construction in 2028, with the plant being operational by early 2029. Continue reading.

$5B MD Anderson-anchored Austin medical center to break ground this fall

Construction on the $1 billion first phase of the AI-native University of Texas Dell Medical Center in Austin—which will feature a hospital operated by Houston’s UT MD Anderson Cancer Center—is set to start this fall. The UT System Board of Regents approved funding for first-phase construction on August 12. The medical center—now expected to cost $5 billion, up from the initial $2.9 billion estimate—will span about 2.5 million square feet. It will include 300 to 500 patient beds, outpatient facilities, an emergency department and specialized care for cancer patients. Continue reading.

Tech giant Apple opens Advanced Manufacturing Center at massive Houston facility

Cupertino, California-based Apple Inc. unveiled its Advanced Manufacturing Center in the Houston, marking the completion of the second of three facilities the tech giant plans to launch in the city by the end of this year. The 20,000-square-foot training center will welcome small- and medium-sized businesses for free training and educational sessions to "help accelerate smart manufacturing across America," according to Apple. Apple opened a similar Apple Manufacturing Academy in Detroit last year. Continue reading.

Intuitive Machines lands $600M satellite deal, NASA ‘spacecraft bus’ contract

Houston-based space infrastructure company Intuitive Machines has scored two astronomical deals. The deals add to the company’s soaring success. As of June 30, Intuitive Machines had a record-high $1.8 billion backlog of orders, a $1.5 billion increase from the end of last year. The current backlog includes orders for more than 80 spacecraft. The company, which went public in 2023, expects this year’s revenue to total $900 million to $1 billion. In the first half of 2026, Intuitive Machines generated nearly $393 million in revenue. Intuitive Machines estimates its total available market is valued at more than $150 billion. Continue reading.

Fast-growing Houston real estate startup surges to No. 7 on Inc. 5000

Houston-based Epique Realty has ridden the AI wave to rank among the Inc. 5000’s 10 fastest-growing private companies. With three-year revenue growth of 23,210 percent, the AI-powered real estate brokerage appears at No. 7 on this year’s Inc. 5000 list. Epique, founded in 2021, also ranks as the No. 1 fastest-growing company in Houston, No. 1 fastest-growing real estate company in the U.S., and No. 2 fastest-growing company in Texas. Continue reading.

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