Systems | Development | Analytics | API | Testing

There's a common belief in the observability space: if you just collect more data, you'll have what you need to debug any issue. The reality is more frustrating: even with 100% unsampled observability, you're still missing critical debugging data. There's a common belief in the observability space: if you just collect more data, you'll have what you need to debug any issue. The reality is more frustrating: even with 100% unsampled observability, you're still missing critical debugging data.

Better specs and clearer task decomposition are a significant step forward. But specs and plans describe intentions. What AI agents also need is visibility into what systems actually do at runtime.

Architectural visualization, or archviz, has shifted rapidly from static 2D renders to immersive 3D experiences that have transformed how architects, designers, and developers communicate their vision. Using this technology, a development team can “walk” clients through hyper-realistic replicas of an office headquarters or residential complex well before ground is ever broken.

In 2025 we focused on a simple but ambitious goal: making debugging faster, less fragmented and less manual. Check out all our releases to make that possible. 2025 was a defining year for Multiplayer. We focused on a simple but ambitious goal: making debugging faster, less fragmented and less manual. That meant meeting developers where they were already working and capturing the right context at the right time.

Annotations are a way to draw, write, and comment directly on top of full-stack session recordings. Now, instead of sketching ideas in isolation, teams can mark up actual user sessions, highlighting specific UI elements, API calls, and backend traces that need attention. Whiteboarding tools are indispensable in system design for visually conveying concepts, ideas, and rough plans. They tap into our natural preference for visual learning.

Most modern software systems are distributed systems, but designing a distributed system isn’t easy. Here are six best practices to get you started. Most modern software systems are distributed systems. Designing and maintaining a distributed system, however, isn't easy. There are so many areas to master: communication, security, reliability, concurrency, and, crucially, observability and debugging.

Multiplayer transforms the chaos of support tickets, eliminating manual work, sloppy hand-offs, and grepping through log files. End-user support has always been messy. Manual steps, tool-switching, and scattered communication turn what should be a simple fix into a marathon of frustration. Tickets feel like scavenger hunts: everyone’s searching for details, logs, screenshots, or that missing repro step. Developers are left waiting on context that never arrives.

Multiplayer gives your team full stack session recordings so you have all the context you need to fix bugs, build features, and supercharge your AI tools. This is all the data you wish was easy to get from your APM tool and screen recorder - all in one place.

Full stack session recordings capture everything that matters without impacting your application performance or adding unnecessary overhead. Traditional continuous recording tools and APM platforms take the same brute-force approach: capture everything. Every session, every log, every metric, whether you need it or not. That flood of data creates its own problems: high storage costs, constant filtering and sampling, and hours wasted sifting for the signal inside the noise.