Most popular SaaS vendors by spend
What are the most popular SaaS companies this quarter?
While Salesforce and Microsoft continue to top the list of the most popular SaaS applications in Q4 2025, the rankings reveal subtle shifts that highlight emerging areas of investment.
The composition of the top vendors differs between SMEs and enterprise-level companies. Small to mid-sized businesses continue to favor platforms that support day-to-day operations, growth and collaboration, while enterprise organizations lean toward large-scale operational, financial and HR systems, with increasing investment in cloud-native infrastructure.
OpenAI has been listed as one of the most popular SaaS products by spend among SMEs and mid-market companies, reflecting growing adoption of AI-driven applications among these organizations. Meanwhile, Atlassian has newly appeared on the enterprise list, signaling broader adoption of collaboration and project management at scale. MongoDB also shows strong growth among enterprises, highlighting its role as an AI-adjacent platform where unstructured data can be stored, managed and analyzed to power advanced analytics and machine learning initiatives.
Across both leaderboards, the top positions remain largely stable, emphasizing the entrenched role of foundational platforms like Salesforce, Microsoft and SAP. The selective emergence of vendors such as OpenAI in SMEs and Atlassian in enterprises shows that organizations are expanding their tech stacks with targeted investments in AI, collaboration and automation, complementing the core platforms that continue to anchor operations.
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