The fourth cohort of startups in the ScaleUp program at TiE Boston – the local chapter of the global nonprofit organization fostering entrepreneurship – is polishing up its pitches for Demo Day, the last milestone of TiE Boston’s five-month signature accelerator.

On April 17th, the public at Demo Day will hear how the 15 companies announced in October have come a long way.

Here’s an update of what some of the TiE Boston startups have accomplished in the past six months. Spiro Technologies, a CRM provider based in Boston, announced a $3 million seed round led by Geekdom Fund. Also, Medumo, a digital health startup that is also among the 32 participants in the 2018 PULSE@MassChallenge digital health accelerator, raised a $2 million seed round in January and was shortly after profiled on Techcrunch. Last but not least, PlenOptika started its journey as one of the members of the Harvard Innovation Labs’ fall cohort.

Here are the 15 startups that will present at Demo Day (descriptions provided by TiE Boston):

 Smart Kargo: SaaS for commercial airlines interested in growing revenue by monetizing excess belly capacity under the wings by transporting goods/cargo.

• SolChroma Technologies: Producting the most vivid, full-color, reflective digital signs to disrupt the $13 billion outdoor advertising market.

 Solstice: Radically expanding access to clean energy by providing community-shared solar power to American households.

• Spiro Technologies: An A.I.-powered CRM that learns your sales process to increase sales team effectiveness and deliver more accurate business insights.

 XCube: Providing scalable infrastructure that automates much of the testing and training process for machine learning algorithms. Their StreamX system provides an integral part of the software that one day will underlie fleets of autonomous vehicles.

• True Impact: A web-based reporting platform that enables donors and charities to measure the social impact of their philanthropic investments to demonstrate success and guide future investment decisions.

• Validated Learning Co. (formerly Quick Key): Makes personalized learning possible in any location, at all educational levels, from K-12 to professional training to certification. Built on a peer-to-peer marketplace for quiz and survey questions, the company has users in 50 countries who have authored more than 150,000 questions and collected over 55,000,000 student responses. 

• Diesel Labs: A video analytics company that empowers marketers to translate TV campaigns, consumer targets, or brands into video campaigns.

 Mond Cloud: The MOND Agile Platform is the best in class, single cloud-based platform to build, integrate and deploy complete enterprise applications.

 Vinylmint: A marketplace that connects video producers to an award-winning community of musicians and voice actors to create custom sounds.

• Savory Living: Savory Living delivers an online program for nutrition and food skills to take charge of your health and turn healthy eating into an enjoyable lifestyle.

• Medumo: Sends timely, turn-by-turn digital instructions based on clinical algorithms to support patients throughout their care.

• PlenOptika: Helping eye care professionals and healthcare organizations streamline the eyeglass exam and build eyecare capacity globally, with our product, QuickSee.

 Rendever: Providing senior living communities with a turnkey virtual reality platform to promote cognitive, emotional and social wellbeing. 

• VR Health: Developing breakthrough medical solutions using VR environments to deliver real-time data analytics that benefit patients, clinicians and other healthcare professionals, at clinics and at home. Their flagship product – VRPhysio – leverages VR for enhancing physical therapy and is the first VR-based medical device for physical therapy authorized by the FDA.