How toss.im CEO Lee Seung-gun grew toss.im to $411M revenue with a 2957 person team in 2025.

Attentive

Attentive is a personalized mobile messaging platform for innovative brands & organizations that can quickly become a top 3 revenue channel. Using real-time behavioral data, Attentive automatically sends engaging text messages to each subscriber at every step of the customer lifecycle. Attentive was founded in 2016 and is based in New York, New York., Attentive is a personalized mobile messaging platform for innovative brands and organizations

Zapier

Zapier is a US-based software company that provides a platform to connect and automate workflows between web applications. Founded in 2011, Zapier's platform allows users to create custom integrations between over 2,000 web applications, including popular tools like Gmail, Slack, and Trello. The company's mission is to make it easy for businesses to automate their repetitive tasks and streamline their workflows, without the need for coding or technical skills. Zapier's platform works by using pre-built integrations, called "Zaps," which automate tasks between different web applications. Zapier serves clients across a range of industries, from small businesses to large enterprises.

Form Energy

Form Energy is an American energy storage company focused on developing energy storage systems to enable a year-round electric grid.

TeamSystem

TeamSystem is a leading tech company in the market for digital business management solutions for companies and professionals. One of the most important Italian players in the ICT sector, the Company has over the years positioned itself as a true enabler of digital competitiveness for its customers by offering solutions for managing SMEs and professional firms (accountants, labor consultants and lawyers). With the aim of supporting the competitiveness of companies and professionals, the TeamSystem Group has also developed innovative fintech solutions for the management of collections, payments and bank reconciliations. In 2022, the Group recorded a turnover of 695 million euros, with direct offices serving more than 2 million customers operating on its digital and cloud platforms, where on average more than 415 million electronic invoices with a total of 850 billion euros transacted are handled each year. Thanks to a strategy of acquisitions aimed at strengthening the competitiveness of the group's offerings in the cloud and digital transformation, a series of operations to grow in certain vertical markets, and the establishment of new specialist companies, TeamSystem has steadily expanded its offerings, entering the fintech services, ecommerce, SME rating and HR management markets. The TeamSystem group has more than 2700 employees and has always invested in technological research and development. Some 730 software engineers, 80% of them agile, are working on the development of ever more innovative, secure and user-friendly solutions. Our mission is to bring digital into every business, which is why TeamSystem works every day alongside customers, SMEs and professionals, to support their digitization programs, developing their competitiveness and making their processes increasingly agile.

Next Education

Next Education is a SaaS-based end-to-end education solutions provider for the K–12 sector. To meet all the academic needs of a learner and make quality education affordable and accessible for every child, we have created technology-driven, user-friendly and learner-centric products as a part of our academic offerings. Our state-of-the-art products such as TeachNext, NextLab and NextCurriculum are mapped to cover CBSE, ICSE and 29 state boards in 7 major Indian languages. Touching the lives of 12,000,000+ students, our solutions serve multiple purposes in both academic and administrative domains. Features such as CCE compliance, 2D & 3D animation, Linux-based operating system and remote accessibility of the system are some of the key strengths of our products. We have 25,000+ learning modules that account for 4000+ hours of classroom teaching at the K-12 level. Each of our modules created by our in-house content development team has been designed using contemporary learning design principles and has undergone rigorous testing on and off the field. We, at Next Education, firmly believe in imbibing all relevant 21st-century skills in today’s learners and leveraging technology along with innovative learning strategies in the products. In line with our mission to be the leading edtech SaaS platform delivering personalised 21st-century learning, we have developed a world-class integrated SaaS platform, Next Learning Platform. This platform facilitates effective and transparent management of all academic and administrative operations of a school. We plan to develop more such products that aim to revolutionise the education system by overcoming the challenges faced by each stakeholder. A Quick Glance Founded in the year 2007 Headquartered at Hyderabad, India Caters to more than 18,000+ schools and 240,000+ teachers across India and the Middle East In-house Research & Development and content development set-up

Postman

The company that owns Postman.com is called Postman. It was founded in 2014 and is headquartered in San Francisco, California, USA. Postman is a collaboration platform for API development, allowing users to design, develop, and test APIs more efficiently. The company offers various features and functionalities, including API documentation, automated testing, and mock server creation. Postman has become a popular tool for developers, with millions of users worldwide, including small startups and large enterprises. The company has received several awards and recognition for its innovative platform, and it continues to expand its offerings to meet the evolving needs of the API development community.