Dev tools · alternatives · 2026

24 alternatives to CZNull

Gpu benchmarking & performance testing

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   GPU Benchmark & Stress Test▲2

   Test your GPU performance instantly in your browser

   Apr 2026 · devicexa.com · its alternatives →

2. 2WS
   WebGL Sprites Benchmark▲38

   2015 · haxor.xyz · its alternatives →

3. 3
   ChartGPU – WebGPU-powered charting library (1M points at 60fps)▲670

   Creator here. I built ChartGPU because I kept hitting the same wall: charting libraries that claim to be "fast" but choke past 100K data points. The core insight: Canvas2D is fundamentally CPU-bound. Even WebGL chart libraries still do most computation on the CPU. So I moved everything to the GPU via WebGPU: - LTTB downsampling runs as a compute shader - Hit-testing for tooltips/hover is GPU-accelerated - Rendering uses instanced draws (one draw call per series) The result: 1M points at 60fps with smooth zoom/pan. Live demo:…

   Jan 2026 · github.com · its alternatives →

4. 4
   Utilyze – an open source GPU monitoring tool more accurate than nvtop▲128

   The standard GPU utilization metric reported by nvidia-smi, nvtop, Weights & Biases, Amazon CloudWatch, Google Cloud Monitoring, and Azure Monitor is highly misleading. It reports the fraction of time that any kernel is running on the GPU, which means a GPU can report 100% utilization even if only a small portion of its compute capacity is actually being used. In practice, we've seen workloads with ~1–10% real compute throughput while dashboards show 100%. This becomes a problem when teams rely on that metric for capacity planning or optimization decisions, it can make underutilized systems…

   Apr 2026 · systalyze.com · its alternatives →

5. 5GA
   GPU-Accelerated Digit Recognition with WebGL▲135

   2016 · erkaman.github.io · its alternatives →

6. 6
   Ultralight – Lightweight, Pure-GPU HTML UI Renderer for C++▲527

   2018 · ultralig.ht · its alternatives →

7. 7
   Volume Shader BM▲7

   Gpu benchmark testing tool

   2025 · volumeshaderbm.net · its alternatives →

8. 8
   WebGPUStress▲3

   GPU stress test for stability, throttling, and FPS drops

   Feb 2026 · webgpustress.com · its alternatives →

9. 9
   Free e-book about WebGPU Programming▲471

   I am excited to announce the launch of my e-book on Graphics/WebGPU programming! This project has consumed much of my spare time, during which I developed various tools to facilitate the publishing process, including a code playground and a static site generator that can reference sample codes. However, I'm feeling burnt out and ready to call it finished, even though it may not feel completely done. Avoiding another abandoned side project has been my primary motivation in reaching this point.

   2024 · shi-yan.github.io · its alternatives →

10. 10
    ALLBenchmark Catzilla▲5

    Catzilla, computer benchmark, GPU test,

    2016 · catzilla.com · its alternatives →

11. 11
    HipScript – Run CUDA in the browser with WebAssembly and WebGPU▲309

    CUDA is NVIDIA's language for GPU programming, allowing you to mix write CPU and GPU code in C++ in one file. By chaining a few projects that compile CUDA to OpenCL, then Vulkan, then WebGPU, you can experiment with this GPGPU language on any hardware.

    2025 · hipscript.lights0123.com · its alternatives →

12. 12OI
    OpenGL in super slow motion – visualising Z-buffering▲276

    Things orbital and not.

    2016 · orbides.org · its alternatives →

13. 13RT
    Real-Time 3D Gaussian Splatting in WebGL▲309

    2023 · antimatter15.com · its alternatives →

14. 14SA
    Sping – An HTTP/TCP latency tool that's easy on the eye▲178

    I've frequently found myself using [nvitop](https://github.com/XuehaiPan/nvitop) to diagnose GPU/CPU contention issues. The two best things about it are: - It's easy to install if I can access pip in the container - It makes a compelling screenshot (which helps me communicate with coworkers.) With those two lessons in mind: Here is Sping! Purpose: Help observe and diagnose latency issues at layer 4+ (TCP/HTTP/HTTPS) Two good things about it: - It's easy to install if you have pip. (Available at…

    2025 · dseltzer.gitlab.io · its alternatives →

15. 15
    a Rust ray tracer that runs on any GPU – even in the browser▲95

    I’ve been experimenting with Rust lately and wanted a project that would help me explore some of its lower-level and performance-oriented features. Inspired by Sebastian Lague’s videos, I decided to implement my own ray tracer from scratch. The initial goal was just to render a simple 3D scene in the browser at a reasonable frame rate. It evolved into a small renderer that can: • Run locally or on the web using wgpu and WebAssembly • Perform mesh rendering with a Bounding Volume Hierarchy (BVH) for acceleration • Simulate both direct and indirect illumination for photorealistic results • Be…

    Nov 2025 · github.com · its alternatives →

16. 16
    Volume Shader▲1

    Gpu benchmark test tool

    Dec 2025 · volume-shader.net · its alternatives →

17. 17
    WebGPU Tech Demo▲141

    WebGPU tech demo running in modern browsers showcasing various rendering techniques like deferred rendering with 400+ dynamic lights, Hi-Z screen space reflections and cascaded shadow mapping.

    2024 · gnikoloff.github.io · its alternatives →

18. 18
    Shadeup – A language that makes WebGPU easier▲179

    2024 · shadeup.dev · its alternatives →

19. 19WG
    WebGL Games▲83

    2015 · webgl.nu · its alternatives →

20. 20
    I've made a Monte-Carlo raytracer for glTF scenes in WebGPU▲131

    This is a GPU "software" raytracer (i.e. using manual ray-scene intersections and not RTX) written using the WebGPU API that renders glTF scenes. It supports many materials, textures, material & normal mapping, and heavily relies on multiple importance sampling to speed up convergence.

    2024 · github.com · its alternatives →

21. 21
    Volume Shader BM (Benchmark)▲6

    I built a free tool called Volume Shader BM. It’s a real-time graphics GPU performance benchmark that runs entirely in the browser — no installs, no drivers. It uses shader-based ray marching (Mandelbulb scenes) to measure FPS, frame time, and stability across GPUs. You can tweak iterations, step size, resolution, and share reproducible results.

    2025 · volumeshaderbm.org · its alternatives →

22. 22
    WebGL Insight, a Debugging Toolkit for Chrome▲72

    A helpful Chrome extension for WebGL development. Contribute to 3Dparallax/insight development by creating an account on GitHub.

    2016 · github.com · its alternatives →

23. 23
    WebGL Playground▲89

    2014 · jessevdk.github.io · its alternatives →

24. 24
    PantheonGPU – GPU health testing and AI workload benchmarking▲13

    Hi HN, I built PantheonGPU because I wanted a better way to answer a simple question: is this GPU actually healthy and performing the way it should? A GPU can show normal temperatures and utilization and still be underperforming, unstable under certain workloads, or have memory, PCIe, or configuration issues. PantheonGPU actively tests the GPU instead of only monitoring telemetry. It currently includes 45+ tests covering compute, tensor workloads, memory, cache, PCIe, thermals, stability, and AI/LLM inference. It supports both NVIDIA CUDA and AMD ROCm. I’m also exploring a larger use…

    Aug 2026 · pantheongpu.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →