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Dev tools · alternatives · 2026

OpenPayphone replaces the internal electronics of a vintage 1996 coin payphone with Raspberry Pi and SIP technology to create a functioning internet-connected phone. Built entirely from open-source components, it lets… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

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  2. 2BA

    Hi. I heard HN likes e-paper gadgets so I wanted to share a little side project I’ve been working on with @sqfmi. We’re building Beepberry - a portable e-paper computer for hackers, designed for chatting on Beeper. My day job is running Beeper [0], but I will always have a soft spot for building hardware. I wanted to create a ‘weekend’ device that would let me stay in touch with friends and family, without the distractions of a full smartphone. I imagined a tiny, hackable e-paper screen with a physical keyboard, powered by a Raspberry Pi, that I could use to chat around my home…and pretty…

    2023 · beepberry.sqfmi.com · its alternatives →

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    The new phone for business. Now on desktop and for teams.

    2020 · quo.com · its alternatives →

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    Using only a Raspberry Pi and an $11 video capture dongle, you can create your own KVM over IP device, allowing you to send keyboard input to a remote computer and capture its display.

    2020 · mtlynch.io · its alternatives →

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    Haxophone▲526

    I built this during Covid. When I released it, some of the parts went out of stock or skyrocketed in price, no longer making this an economic DIY project. Now that things are getting back to almost normal, I thought I'd share it here and request feedback. This is a very niche project for people who like the same things I do: saxophones, Rust, mechanical keyboards and the Raspberry Pi.

    2022 · github.com · 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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    3nd generation with faster processor, wireless and Bluetooth

    2016 · raspberrypi.com · its alternatives →

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    The new phone for business, in an app

    2020 · quo.com · its alternatives →

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    OpenPhone▲271

    Simplest way to own a business phone number

    2018 · quo.com · its alternatives →

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    Adventures with rotary phones and asterisk. Contribute to mnutt/rotary development by creating an account on GitHub.

    2024 · github.com · its alternatives →

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    Build AI copilots for your own SaaS product

    2023 · github.com · its alternatives →

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    The phone system for teams, now integrated with your stack

    2024 · quo.com · its alternatives →

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    New Raspberry Pi Zero with wireless LAN and Bluetooth

    2017 · raspberrypi.com · its alternatives →

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    Hi HN, As a weekend project, I hacked together a physical phone, a Raspberry Pi running Asterisk and Twilio, to let toddlers safely make international calls. I’ve documented the setup in this write-up and published the code + Ansible playbooks on GitHub so others can replicate it. I built this so kids of expats can easily stay in touch with family on other continents. Would love feedback from anyone who’s worked on something similar or tries building this themselves! writeup: https://wip.tf/posts/telefonefix-building-babys-first-intern... github repos: -…

    2025 · wip.tf · its alternatives →

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    A few years ago, right after high school, I decided to try to make a simultaneous translation app for Android as a side project, it took longer than expected (about 2 years) and I had to make a lot of compromises (I had to use Google's API and therefore make users use a developer key because at the time there were no free solutions for speech recognition and translation that had good quality). At the end of university, I decided to pick it up again and finally, using OpenAi's Whisper for speech recognition and Meta's NLLB for translation (with both running locally on the phone), I managed to…

    2024 · github.com · its alternatives →

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    dPhone▲133

    The most secure calling app. Open Source and Free.

    2019 · evelon.app · its alternatives →

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    The all-in-one business phone, now made collaborative

    2021 · quo.com · its alternatives →

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  20. 20OS
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    📡 An AX.25 packet radio chat protocol with support for digital signatures and binary compression. Like IRC over radio waves. - brannondorsey/chattervox

    2018 · github.com · its alternatives →

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    Paxo▲117

    The DIY phone that takes care of the planet

    2023 · paxo.fr · its alternatives →

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    Free and open source encrypted chat for iOS.

    2017 · chatsecure.org · its alternatives →

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    Educational DIY mobile phone 📱🛠

    2018 · kickstarter.com · its 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 →