Dev tools · alternatives · 2026
24 alternatives to SatCat5, the open-source FPGA Ethernet switch
We've just launched v2.5 of SatCat5, the open-source FPGA Ethernet switch [1]. SatCat5 contains various FPGA building blocks that let you build a custom mixed-media Ethernet switch. It was originally intended for cubesats [2] but has many other potential applications. The headline feature for this release is support for the IEEE-1588 Precision Time Protocol (PTP). SatCat5 has demonstrated end-to-end synchronization to within 50 ps-rms, which is approaching the world-leading performance of CERN's White Rabbit Project [3]. Except we're doing time-transfer over regular, non-synchronous…
SatCat5 is an open-source FPGA Ethernet switch composed of configurable building blocks for creating custom mixed-media switches. Originally designed for cubesats, it serves applications requiring custom network… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. SatCat5, the open-source FPGA Ethernet switch launched in 2024; newer entries below may have overtaken it.
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Satcat▲363Analyze and track over 25,000 satellites in real-time
2024 · satcat.com · its alternatives →
- 2
I've been hacking away lately, and I'm now proud to show off my newest project - The Icepi Zero! In case you don't know what an FPGA is, this phrase summarizes it perfectly: "FPGAs work like this. You don't tell them what to do, you tell them what to BE." You don't program them, but you rewrite the circuits they contain! So I've made a PCB that carries an ECP5 FPGA, and has a raspberry pi zero footprint. It also has a few improvements! Notably the 2 USB b ports are replaced with 3 USB C ports, and it has multiple LEDs. This board can output HDMI, read from a uSD, use a SDRAM and much more.…
2025 · github.com · its alternatives →
- 3IM
2022 · imihajlov.tk · its alternatives →
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A Flipper Zero clone, but cheapest, DIY and simply Open Source, made with Arduino IDE - lraton/FlopperZiro
2025 · github.com · its alternatives →
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Hello, we're Max and Byran from MUREX Robotics, a high school robotics team from Exeter, New Hampshire. We are super proud to have made this open source piece of technology! It is only 6.9 dollars (actually!) from JLCPCB :) I hope you like it. You can find us at [email protected] and [email protected] as well if you have any questions. We will be putting a small run of these boards for sale somewhere (we have <25 units of stock), probably for $10+shipping. Let us know if you're interested in more! Board files for everything we make is here:…
2024 · docs.murexrobotics.com · its alternatives →
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Contribute to Park07/amradio development by creating an account on GitHub.
Feb 2026 · github.com · its alternatives →
- 7IM
Building a 10BASE-T Ethernet transceiver (receiver and transmitter) with discrete logic chips
2024 · qdiv.dev · its alternatives →
- 8
A few months ago, I was inspired by this post on Reddit, titled: Food items should have QR codes that instruct the microwave exactly what to do. Like high for 2 minutes, let stand 1 minute, medium 1 minutes.. I thought this was a pretty cool idea, and that it
2013 · madebynathan.com · its alternatives →
- 9IB
We wanted to do something very challenging to prove to ourselves that we can do anything we put our mind to. The reasoning for why we chose to build a toy TPU specifically is fairly simple: - Building a chip for ML workloads seemed cool - There was no well-documented open source repo for an ML accelerator that performed both inference and training None of us have real professional experience in hardware design, which, in a way, made the TPU even more appealing since we weren't able to estimate exactly how difficult it would be. As we worked on the initial stages of this project, we…
2025 · tinytpu.com · its alternatives →
- 10
I've been obsessed for the past ~year with the possibilities of talking to LLMs. I built a bunch of one-off prototypes, shared code on X, started a Meetup group in SF, and co-hosted a big hackathon. It turns out that there are a few low-level problems that everybody building conversational/real-time AI needs to solve on the way to building/shipping something that works well: low-latency media transport, echo cancellation, voice activity detection, phrase endpointing, pipelining data between models/services, handling voice interruptions, swapping out different…
2024 · github.com · its alternatives →
- 11
2017 · kelu124.gitbooks.io · its alternatives →
- 12
Nodrix▲76Open-source, single-tenant IoT platform that deploys to your own Cloudflare account. Hardware over HTTPS or WebSocket, realtime dashboards, automations, and a clean read API.
Jun 2026 · nodrix.live · its alternatives →
- 13
Send video/audio over HDMI on an FPGA. Contribute to hdl-util/hdmi development by creating an account on GitHub.
2020 · github.com · its alternatives →
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A soft-core FPGA replica of the Saab CK37 — the world's first IC-based airborne computer, rebuilt from the original 1963 FMV maintenance manual and running a PID navigation loop in the original Q1.25 assembly. Target: OrangeCrab r0.2 (ECP5-25F) - FormerLab/ck37-core
Mar 2026 · github.com · its alternatives →
- 16
Hi HN, To truly understand how operating systems and network protocols work, I decided to combine two classic learning tools: the xv6 teaching OS and a from-scratch TCP/IP stack. I'm excited to share the result: my own from-scratch TCP/IP networking stack running directly inside the xv6-riscv (https://github.com/pandax381/xv6-riscv-net) kernel. The project uses a modern virtio-net driver, allowing it to run seamlessly in QEMU and communicate with the host machine. Key features: - From-Scratch Stack: The core is powered by microps…
2025 · github.com · its alternatives →
- 17
The core question: how did HP's scientific calculators actually work at the gate level? That rabbit hole led to building one from scratch. The architectural decision everything else follows from: a decimal calculator should store numbers as BCD — one decimal digit per 4-bit nibble. A standard byte-oriented CPU (Z80, 6502) fights that layout constantly. So I designed a small custom CPU in Verilog where 4 bits is the natural data width and memory is nibble addressable. What the project covers: - Custom CPU: Harvard architecture, 12-bit ISA, 8-state execution FSM, hardware stack guard with a…
May 2026 · github.com · its alternatives →
- 18
Hi HN, I have been messing around with WebRTC for a few years now but when it comes to the TURN server I never quite got to my gold standard of free, self-hosted and open source. I decided to give it a go using Oracle Cloud Infrastructure's free tier, meaning that my total spend got down to domain name hosting. I know plenty of people have been burnt by Oracle in the past, but I have had servers running on the free tier for 5 years now without so much as a hiccup. Regardless, the concepts will be the same using any cloud based server. This is the first time I've written up an end-to-end…
2025 · github.com · its alternatives →
- 19
I am the author of the platform, happy to reply to any question you might have! It scales up really nicely thanks to a year of research and development of the hashtable implemented in cachegrand, on the hardware used for benchmarking, an AMD EPYC 7502P, it was able to reach up to 5mln GET QPS and 4.5mln SET QPS, with batching up to 60mln GET QPS and up to 26MLN SET QPS. cachegrand is fast, it's fully Open Source, it's under a BSD 3-clause license - it can be used easily as standalone platform or incorporated in other ones without any licensing issue - and we are working to expand the Redis…
2022 · github.com · its alternatives →
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The 1st decentralized cloud platform for satellite computing
2025 · satlyt.ai · its alternatives →
- 21
Tiny & fast WebAssembly edge compute server. Contribute to suborbital/sat development by creating an account on GitHub.
2021 · github.com · its alternatives →
- 22
Tom from Tensil here - happy to answer questions! We developed Tensil to bring custom ML accelerators to people who don't have the resources of companies like Google, Facebook and Tesla. Currently, we're focused on supporting convolutional neural network inference on edge FPGA (field programmable gate array) platforms, but we aim to support all model architectures on a wide variety of fabrics for both training and inference. Tensil is different from other ML accelerators in that it is open source and really easy to use. For example, you can generate a custom accelerator with one command: $…
2022 · tensil.ai · its alternatives →
- 23
This project contains no code from Linux, BSD, Minix, or any other OS. Everything up until this point is written entirely from scratch, including a pure microkernel (that only implements multiprocessor priority scheduling, memory management, and interprocess communication), a work-in-progress implementation of the standard C library, and a variety of servers that provide drivers and other essential OS functionality. At the time of writing this post, the servers provide drivers for the keyboard, NVMe SSDs (that works on real hardware), a Unix-like virtual file system (with a single root…
2024 · github.com · its alternatives →
- 24
Turn your SatisMeter NPS responses into product insights
2018 · its alternatives →
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- Icepi Zero – The FPGA Raspberry Pi Zero Equivalent alternatives
- I made an Ethernet transceiver from logic gates alternatives
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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 →