Life & fun · alternatives · 2026
24 alternatives to I made a tool to communicate data using the PC speaker
Hi HN, r2t2 is a command-line tool for transmitting data through sound using the PC speaker on the motherboard. The name of the tool is a reference to the R2-D2 robot from Star Wars :) In short, you type some message and it gets FSK modulated and transmitted via sound through the PC speaker. Note that this is the speaker/buzzer that you connect to the motherboard and not the regular speakers that you connect to the sound card. I also made a simple web page that listens to the sound emitted by r2t2 and decodes the received messages. The page can be used by simply opening it on your phone…
r2t2 is a command-line tool that transmits data through sound using a PC motherboard speaker. Messages are FSK modulated and converted to audio signals that can be decoded by a companion web page on a smartphone. The… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. I made a tool to communicate data using the PC speaker launched in 2021; newer entries below may have overtaken it.
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Transform any generated texts into audio right in ChatGPT
2023 · its alternatives →
- 2
APIs to automatically transcribe and understand audio
2017 · assemblyai.com · its alternatives →
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Transkriptor 2.0▲263From speech to insights – transcribes, summarizes & analyzes
2025 · transkriptor.com · its alternatives →
- 5
Inkr 2.0▲475Transcribe, quick notes, and search smarter in real time
2025 · inkr.app · its alternatives →
- 6LT
2016 · brian-armstrong.github.io · its alternatives →
- 7EA
Transcribe audio from your device microphone using 100% local / client-side processing.
2023 · ermine.ai · its alternatives →
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VoxCPM2▲110Open-source 48kHz TTS with voice design and cloning
Apr 2026 · github.com · its alternatives →
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Free AI transcription: convert video and audio to text, translate into 120 languages, download SRT, VTT, ASS or TXT, or export the video with subtitles on it.
2022 · freesubtitles.ai · its alternatives →
- 13OV
Let’s face it: if you’re reading this, chances are that you are receiving the dreaded voice messages more often than you would want. I like the romantic feeling behind voice messages on Instant Messaging platforms: you can feel the nuances of the sender’s voice, quickly deciphering their mood. Howev
2022 · a2p.it · its alternatives →
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Keytap2 - acoustic keyboard eavesdropping based on language n-gram frequencies
2020 · github.com · its alternatives →
- 15
Learn how to extract text from audio files locally using Python, Whisper, and other powerful tools. Complete setup guide with practical examples.
2025 · pavlinbg.com · its alternatives →
- 16
Turn audio and video to text and subtitles in minutes
2021 · speechtext.ai · its alternatives →
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AI Audio Kit▲92Easy audio transcription from your macOS desktop
2024 · aiaudiokit.pages.dev · its alternatives →
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EchoScribe▲114Telegram bot that transcribes voice & video notes to text
2023 · echoscribe.xyz · its alternatives →
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A hackday project. Run the program, speak into your microphone and hear the response from your speakers. - rob-mccann/Pi-Voice
2013 · github.com · its alternatives →
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Tiny data-over-sound library. Contribute to ggerganov/ggwave development by creating an account on GitHub.
2021 · github.com · its alternatives →
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Hintscribe▲89Real-time system audio transcription with GPT integration
2023 · hintscribe.wordpress.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 →