When the Category Leader Stalls: Postman and the Future of API Tooling

Samuel Kaluvuri — Fri, 27 Feb 2026 18:41:32 +0000

I’m old enough to remember when Postman genuinely felt like a breath of fresh air.

Back then, compared to tools like SoapUI, it was clean and simple. Paste a URL. Pick a method. Hit send. Done. It removed friction. It made APIs approachable. It didn’t try to be your platform — it was just a really good tool. I loved it!

At the time, I was working at a very large European technology company that had actually blacklisted Postman. It wasn’t considered enterprise-grade. It wasn’t approved software. I remember pushing hard internally to get it allowed for our teams because I genuinely believed this was the future of how developers would interact with APIs.

Eventually we got it approved.

I saw Postman's evolution to became the de facto API client. If you worked with APIs, you used it. That kind of dominance doesn’t happen by accident, it happens because a tool solves a real problem in a simple, intuitive way.

But somewhere along the line, the direction shifted.

Postman stopped being just an API client and started becoming an ecosystem. Accounts became mandatory. Workspaces, cloud sync, governance layers, testing frameworks, monitoring, collaboration portals - everything got layered in. Each feature probably made sense individually. But collectively, the center of gravity changed.

The original magic - fast, frictionless API exploration, started feeling secondary.

A few years ago, I had conversations with some senior ex-Postman folks. One thing that stayed with me was the internal ambition to become the de facto API specification. There seemed to be a certain resistance toward OpenAPI, and for a long time OpenAPI support felt secondary inside the product.

That always struck me as a strategic miscalculation. A tool trying to become the standard is a difficult position to sustain. Standards need to outlive vendors. More importantly, they need to be vendor-neutral if they’re going to be adopted universally. When a tool and a standard blur together, trust eventually becomes fragile.

Contrast that with what happened with Swagger. Swagger could have remained vendor-controlled. Instead, it was contributed to the Linux Foundation and evolved into OpenAPI. That move made it neutral, and adoption exploded. Even today, many developers still use “Swagger” and “OpenAPI” interchangeably — which shows just how deeply that standard embedded itself into the ecosystem.

To be clear, I’m not saying Postman should have open-sourced or “donated” its own schema. That’s not the point. The point is that Postman had the scale, reach, and goodwill to become the best OpenAPI-native tool in the world. They could have embraced the standard fully and elevated it. Instead, OpenAPI often felt like a second-class citizen — perhaps because it evolved from what was once seen as a competitor.

That was the opportunity.

Not to own the standard - but to champion it, and in doing so, become indispensable to it.

I want to be clear that this probably wasn’t greed. When you’re valued at a billion dollars — which Postman reportedly was at one point — growth isn’t optional. You need enterprise narratives. Recurring revenue. Platform stickiness. That pressure shapes roadmaps.

But it also shapes products in subtle ways.

What makes me reflect on this isn’t that Postman "failed". It’s that it stagnated in the one place where it once led: interaction design.

It’s 2026, and we’re still essentially filling in the same request forms from almost two decades ago. Headers table. Params table. Body tab. Raw/JSON toggle. The surrounding ecosystem grew. The pricing model evolved. The cloud story expanded. But the core interaction model barely changed.

For a company that once redefined API tooling, that feels like a missed opportunity.

And maybe the bigger impact is what happened to the ecosystem. Because Postman defined the category so strongly, most competitors copied it. For years, innovation in API tooling meant “Postman, but open-source” or “Postman, but git-based.” The dominant UX pattern became the ceiling. Everyone optimized to replace it — few tried to rethink it.

That’s where the stagnation really spread.

But recently, something feels different.

Newer tools like Yaak and Voiden aren’t just trying to be replacements. They’re questioning assumptions. They’re experimenting with file-native workflows, plugin architectures, tighter integration with developer environments, and more programmable models. In a world that is increasingly Git-centric and AI-assisted, they’re asking whether the “fill in the form and hit send” model is still the right abstraction.

They’re not perfect. They’re early. But they feel alive.

And that matters.

Because API tooling shouldn’t be frozen in 2012 while the rest of software engineering moves forward. We’re building distributed systems, event-driven architectures, AI-powered pipelines — and our primary API interface is still a static request form?

Postman once changed the API world by making it radically simple.

But categories don’t stand still. And when the dominant player stops rethinking first principles, space opens up.

That’s what we’re seeing now.

New tools aren’t trying to recreate Postman with a different logo. They’re rethinking the interaction model itself. File-native workflows. Git as a first-class citizen. Programmability. Plugin architectures. AI-assisted execution. They’re asking whether the “fill in the form and hit send” abstraction still makes sense in 2026.

That shift matters.

Because API tooling shouldn’t just accumulate features — it should evolve with how we build software.

If Postman’s stagnation marked the end of one era, what’s emerging now feels like the start of something more aligned with where development is actually heading.

Open Source, Incentives, and Why 'Monetize Later' Often Backfires

Samuel Kaluvuri — Wed, 25 Feb 2026 17:55:02 +0000

For a long time, I strongly believed in open source and paying it forward to the developer community.

At the same time, over the years, I’ve grown increasingly skeptical of how open source plays out in developer tooling.

Not because I stopped believing in it, but because I’ve watched too many tools / frameworks I depended on quietly change direction. They start permissive and community-first, gain massive adoption, and then introduce license shifts, feature gating, or enterprise-only tiers once business pressure mounts.

We’ve seen this pattern repeatedly: Terraform > OpenTofu, Redis > Valkey, Elastic > OpenSearch.

After enough of these cycles, it’s hard not to become a little cynical. In some ways, SaaS starts to feel more honest at least the incentives are explicit from day one.

Trying to understand why this keeps happening, one pattern stands out.

Many of the most durable open-source tools and frameworks such as VS Code, React, Kubernetes, and Backstage - were built by companies where the tool itself was not the primary revenue engine. Their core business lived elsewhere.

That mattered.

It meant these tools could function as ecosystem infrastructure rather than direct monetization vehicles. They could stay open because they weren’t carrying payroll, sales targets, and investor expectations on their own.

In contrast, when an open-source project becomes the business, the incentives shift. The tool now has to fund teams, meet SLAs, satisfy investors, and deliver predictable growth.

Over time, that pressure often leads to open-core models, licensing changes, community forks, and growing tension between "community" and "enterprise."

This isn’t about bad intentions. It’s about economics.

The popular "open source first, monetize later" strategy is especially risky. Once adoption takes off and the tool becomes central to a company’s survival, teams are forced into trade-offs that often erode trust and fragment communities.

Open source thrives most easily when it isn’t carrying the full weight of corporate survival.

When it is, preserving its original spirit becomes much harder.

If we want healthier developer ecosystems, we need to be more honest from the start.

Either:

build an open-source project as genuine long-term infrastructure and commit to keeping it open, or
build a commercial product with a clear monetization model from day one.

Both paths are valid.

Trying to blur the two is what repeatedly leads to broken trust, frustrated contributors, and fragmented communities.

DEV Community: Samuel Kaluvuri

When the Category Leader Stalls: Postman and the Future of API Tooling

Open Source, Incentives, and Why 'Monetize Later' Often Backfires