Cobalt
Fewer than 5 people recommend it so far, so there's no written verdict. Here is what commenters said.
Why people recommend it
“cobalt instances or yt-dlp”
“I think #2 is actually simpler”
Show 2 more
“I just added !cobalt to my custom bangs as `https://cobalt.meowing.de#%s`, and it works.”
“Cobalt + Liquid-Rust + iSH enables offline writing with iPad portability”
Caveats and dissent
“I tried commercial platforms (Cobalt, Synack, HackerOne) but they're still $8K+ per test”
Often compared with
From the makers not counted in the ranking
“I built an SDK and apps that allows e-ink apps with sandboxing and permissions model, auto-updates, shared capabilities etc. to be built for Kobo”
“while building the UI components for an SDK for Kobo e-ink apps”
“an app development platform for my Kobo eReader”
“I decide to build an SDK platform to develop and deploy apps on it.”
“I ended up building an entire SDK, an HN client, an RSS discovery & reader and an audiobook generator”
Threads where it came up
- Show HN: My not-for-profit search engine with no ads, no AI, & all DDG bangs 2 mentions
- We should be more ambitious with the software we build 1 mention
- Show HN: TikTok user finder and video donwloader 1 mention
- Re-Engineering YouTube for the Living Room: Bringing "Chrobalt" to RDK 1 mention
- Ask HN: In your experience, what are sound conventions for e-ink UI development? 1 mention
- Ask HN: What are you working on? (August 2026) 1 mention
Also written as cobalt. Data: cobalt.json. Quotes are verbatim; the verdict and theme labels are written by a model from these comments, and every clause links to its sources.
All comments 7
“what's benefit over open source cobalt.tools”
“Youtube decided to run a stripped down version of Chrome (Cobalt)”
“cobalt instances or yt-dlp”
“I tried commercial platforms (Cobalt, Synack, HackerOne) but they're still $8K+ per test”
“I think #2 is actually simpler”
“I just added !cobalt to my custom bangs as `https://cobalt.meowing.de#%s`, and it works.”
“Cobalt + Liquid-Rust + iSH enables offline writing with iPad portability”