Top SaaS Vendors on Ramp (September 2026)
Dear Colleagues: today’s letter is part of a series — Top SaaS Vendors. Every month, Ramp processes billions of dollars in business expenses on its corporate card and bill pay platform. And every month, I will rank the new vendors that customers are purchasing from while sharing emerging market trends and my thoughts on the software industry.
Our Top SaaS Vendors series is built using data from Ramp Rate, a data-backed vendor directory we launched earlier this year. Track market share, business adoption, and growth trends across categories using Ramp’s proprietary data built with actual transactions across 70,000-plus businesses on Ramp's spend platform.
Two software trends from Ramp data this month:
First, if you are bringing AI to a large enterprise, read this post from Ramp’s Head of Data Ian Macomber. Ian writes about the post-AI data stack, and how, now that AI allows anyone at the company to build a dashboard, the data team’s job shifts to building the company’s reality: the infrastructure that allows agents to produce correct analysis without a data scientist in the room. His writeup is specific, actionable, and describes Ramp’s actual data stack at length.
Second, companies are buying AI security software in the wake of the Hugging Face attack, in which a swarm of ~700 AI agents from OpenAI broke out of their isolating testing environment and hacked the AI platform. Three of our trending software vendors (DepthFirst, Monte Carlo, Antithesis) make software marketed around monitoring agents in production, catching bugs and vulnerabilities before they spiral. Unclear as to whether any of them would have stopped the Hugging Face attack — which was so hard to track and identify because the agents covered their tracks with falsified logs.
I anticipate AI security will become a strong headwind to deeper enterprise adoption, at the expenses of the labs OpenAI and Anthropic and at the benefit of vertical-specific security software.
Here’s a breakdown of the top SaaS vendors last month:
See you next month.
For more analysis of Ramp spend data, follow me on X and LinkedIn, and check out Ramp Economics Lab.
