2 Houston startups win big at SXSW 2025 pitch competition

winner, winner

Two Houston startups won the SXSW Pitch showcase in their respective categories. Photo via Getty Images

Houston had a strong showing at this week's SXSW Pitch showcase in Austin, with two local startups claiming top prizes in their respective categories.

Little Place Labs, a Houston space data startup, won the Security, GovTech & Space competition. Clean-tech company Helix Earth, which spun out of Rice University and was incubated at Greentown Labs, won in the Smart Cities, Transportation & Sustainability contest.

As one of SWSX's marquee events, held March 8-10, the pitch competition featured 45 finalists, selected from 589 applicants, in nine categories.

"We faced impressive competition from a well-chosen set of finalists, and we're honored to be chosen as the winners. One of the judges even commented, ‘Who knew you could make air conditioning sexy,’” Brad Husick, Helix's co-founder and chief business officer, said in a release.

Helix Earth was launched in 2022 and is known for its space capsule air filtration system that was co-developed for NASA. The commercial air conditioner add-on technology, now in a pilot phase, has been used to retrofit HVAC systems for commercial buildings and can save up to 50 percent of the net energy, cutting down on emissions and operating costs, according to the company. Its co-founder and CEO Rawand Rasheed was named to the Forbes 30 Under 30 Energy and Green Tech list for 2025.

“This win validates our mission to drive sustainable innovation in commercial air conditioning and beyond. We are excited about the future of Helix Earth and the impact we will have in reducing energy consumption and emissions," Rasheed said in a statement.

Little Place Labs echoed that sentiment with a post on LinkedIn celebrating the win.

"This all started with a simple mission: To deliver real-time space insights to help first responders, mission planners, and decision-makers act before problems arise,” the post read. "Today, that mission feels even stronger."

The company uses advanced AI and machine learning to deliver near-real-time space analytics for both ground and space-based applications. Its software aims to help first responders, mission planners and decision-makers detect anomalies and make informed decisions quickly. It was co-founded in 2020 at Oxford by Houstonian and CEO Bosco Lai and Gaurav Bajaj and participated in the 2023 AWS Space Accelerator.

Two other Houston companies were selected as finalists:

  • Trez, a Latino-focused fintech company that uses AI and voice-command payroll through WhatsApp to provide culturally relevant payroll and streamline financial operations for Latino business owners.
  • Tempesst Droneworx, a veteran-owned software company that's Harbinger software providing real-time contextual intelligence for early warning detection, reducing time to decision and speeding time to action.

Jesse Martinez, founder of invincible, and Anu Puvvada of KPMG were two judges representing Houston.

According to SXSW, 647 companies have participated in SXSW Pitch over the years, with over 93 percent receiving funding and acquisitions totaling nearly $23.2 billion. See the full list of 2025 winners here.

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Houston e-commerce unicorn reaches $1.6B valuation with $50M fundraising round

fresh funding

Houston-based Cart.com, a provider of fulfillment and logistics services for B2C and B2B brands, has raised $50 million in venture capital, pushing its valuation to $1.6 billion. Since it was founded in 2020, Cart.com has raised $475 million.

Cart.com earned “unicorn” status in 2023 after securing a $60 million Series C round of funding. In the startup universe, “unicorn” refers to a private company that’s valued at $1 billion or more. Last year, Cart.com nailed down $130 million in debt funding, lifting its valuation to $1.2 billion.

Technically, Cart.com no longer qualifies as a startup. Rather, it’s now in “scaleup” territory. This term refers to a startup that has notched substantial growth and has maintained a stable workforce, among other positive achievements. Notable brands that have graduated from startup to scaleup include Airbnb, Peloton and Uber.

The $50 million round includes money from funds and accounts managed by BlackRock and Neuberger Berman, and new investors such as eGateway Capital, along with several unidentified venture capital firms, investors and family offices.

The company said it will use the fresh capital to fuel its global expansion through investments in infrastructure, technology, and M&A.

“Cart.com is continuing our strong growth trajectory across all operating metrics, and we intend to utilize this additional capital to accelerate the expansion of our platform and bring our customers new capabilities to enable their growth,” Omair Tariq, founder and CEO of Cart.com, said in a news release. Tariq added that his company is “well on our way to building the largest and most comprehensive platform in our space.”

Over the past 12 months, Cart.com completed its acquisition of OceanX, the fulfillment operation of direct marketing company Guthy-Renker, and Amify, an Amazon marketplace optimization and advertising platform. Bill Guthy, founder of Guthy-Renker, now sits on Cart.com’s board of directors

Texas luxury bus service adds route connecting The Woodlands and Dallas

Travel Time

Houston-area business and leisure travelers have a convenient new route to check out thanks to Vonlane. The Texas-based luxury motor coach service is adding a new daily service between The Woodlands and Dallas starting June 13.

Vonlane already offers service between Dallas and downtown Houston, at the Hyatt Regency at 1200 Louisiana St., eight times per day starting at 6 am. The ride takes 3 hours and 45 minutes.

According to Vonlane founder and CEO Alex Danza, The Woodlands has been a much-requested route.

“The Woodlands area has been our most requested geographic addition for several years, so we’re thrilled to announce this expansion, our 10th destination on our 11th anniversary,” Danza says. “Bringing our elevated bus service to suburban areas is a strategic priority as we seek to relieve the hassles of driving and air travel for our passengers and better meet them where they live, work, and play.”

The new service brings a convenient nonstop route to and from the northern fringe of Houston — The Woodlands, Spring, Cypress, Conroe, Montgomery County, and northern Harris County.

Beginning June 13, The Woodlands-Dallas route will offer the following departures:

  • Monday, Thursday, and Friday: 6:15 am, 10:15 am, 2:15 pm, and 6:15 pm – departing both The Woodlands and Dallas
  • Tuesday, Wednesday, and Sunday: 10:15 am and 2:15 pm – departing both The Woodlands and Dallas
  • Saturday: 9 am: departing The Woodlands
  • Saturday 1 pm: departing Dallas

This ride will take 3 hours and 15 minutes.

The new drop-off point for The Woodlands service will be at Woodlands Waterway Marriott Hotel & Convention Center, 1601 Lake Robbins Dr.. According to Danza, The Woodlands Waterway Marriott offers easy access to I-45, ample parking, and high-quality accommodations.

Riders will depart in Dallas at the established stop at Doubletree Love Field, 3300 W. Mockingbird Ln. The new route offers proximity to major employers in the area such as Alight Solutions, Baker Hughes, Chevron Phillips, Entergy, ExxonMobil, Hewlett-Packard, Houston Methodist, Huntsman Corporation, Lone Star College, McKesson, Memorial Hermann, Occidental Petroleum, St. Luke’s Health, and Texas Children’s.

Visit The Woodlands president Nick Wolda says in a statement that The Woodlands is a popular destination for Dallas residents.

“Visit The Woodlands is excited to welcome Vonlane to The Woodlands Waterway Marriott and Conference Center. This first-class amenity is a fantastic addition to our vibrant community, perfectly designed to elevate the travel experience,” Wolda says. “The Woodlands is the go-to destination for trips from the DFW area—whether you're a corporate conventioneer, a Pavilion concertgoer, a college student coming home, or a weekend shopping trip with friends. With this new service, getting to and from The Woodlands has never been easier or more enjoyable!"

Vonlane buses have 22 first-class leather seats, ample workspace, complimentary Wi-Fi, and an onboard attendant offering premium cabin service with snacks, meals, and beverages included.

Fares are a flat rate of $125 for one-way trips with advance purchase. No taxes, baggage fees, or change fees apply. Rates increase with less than seven days’ notice and within 24 hours before departure.

Tickets can be booked at www.vonlane.com.

Vonlane was founded in Texas in 2014 and offers more than 475 weekly departures across 10 destinations.

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A version of this story originally appeared on CultureMap.com.

Houston aerospace co. soars with first U.S. test flight of hypersonic engine

taking off

Houston-based Venus Aerospace successfully completed the first U.S. flight test of its proprietary engine at a demonstration at Spaceport America in New Mexico.

Venus’ next-generation rotating detonation rocket engine (RDRE) is supported by a $155,908 federal Small Business Innovation Research (SBIR) grant from NASA and aims to enable vehicles to travel four to six times the speed of sound from a conventional runway. The recent flight test was the first of an American-developed engine of its kind.

"With this flight test, Venus Aerospace is transforming a decades-old engineering challenge into an operational reality,” Thomas d'Halluin, managing partner at Airbus Ventures, an investor in Venus, said in a news release. “Getting a rotating detonation engine integrated, launch-ready, and validated under real conditions is no small feat. Venus has shown an extraordinary ability to translate deep technical insight into hardware progress, and we're proud to support their bold approach in their attempt to unlock the hypersonic economy and forge the future of propulsion."

Venus’ RDRE operates through supersonic shockwaves, called detonations, that generate more power with less fuel. It is designed to be affordable and scalable for defense and commercial systems.

The RDRE is also engineered to work with the company's air-breathing detonation ramjet, the VDR2, which helps enable aircraft to take off from a runway and transition to speeds exceeding Mach 6. Venus plans for full-scale propulsion testing and vehicle integration of this system. Venus’ ultimate goal is to develop a Mach 4 reusable passenger aircraft, known as the Stargazer M4.

"This milestone proves our engine works outside the lab, under real flight conditions," Andrew Duggleby, Venus co-founder and chief technology officer, said in the release. "Rotating detonation has been a long-sought gain in performance. Venus' RDRE solved the last but critical steps to harness the theoretical benefits of pressure gain combustion. We've built an engine that not only runs, but runs reliably and efficiently—and that's what makes it scalable. This is the foundation we need that, combined with a ramjet, completes the system from take-off to sustained hypersonic flight."

The hypersonic market is projected to surpass $12 billion by 2030, according to Venus.

"This is the moment we've been working toward for five years," Sassie Duggleby, CEO and co-founder of Venus Aerospace, added in the release. "We've proven that this technology works—not just in simulations or the lab, but in the air. With this milestone, we're one step closer to making high-speed flight accessible, affordable, and sustainable."

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