Alternatives

Products that do what Cobalt does

Your Kobo can run apps now

1. 1CA
   Cobalt, an SDK to build apps for Kobo eReaders▲5

   Hey HN, I built an SDK to help me create apps I wanted on my Kobo. My Kobo device has a single core <1GHz processor and 512MB RAM, much less than a Raspberry Pi, but the eInk display and larger battery life opens up a lot of use cases. I have since used it to build an approval sidekick for my Mac's Claude code and codex, a Hacker News Client for Kobo, a Gutenberg reader, an RSS search and reader and more. All the code is in the repo. If you have a different device than mine (Clara BW) would love for you to test it on your device and submit a PR to enable this for more device profiles. Thanks.

   Aug 2026 · github.com

2. 2
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8. 8
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22. 22
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