Decker
HyperCard-inspired environment for building interactive multimedia stacks, games and tools.
Liked for packing apps and their own editor into a single self-contained HTML file that makes no outside calls,12 and described as fun and cute to use.345 The one complaint is that it feels like nostalgia and is not useful for real projects today,6 though a daily user points to hundreds of games and zines built with it, including a Steam release.7
Why people recommend it
Fun to use · 3
Commenters call it fun, cute and lovable.
“check out Decker https://beyondloom.com/decker/ Super fun to use.”
“If y'all never seen Decker, it _is_ cute”
Show 1 more
“I love it, thanks for creating this.”
Single HTML file · 2
A saved stack is one HTML file containing the engine and an editor, with no outside calls.
“I love it, thanks for creating this.”
“Decker works similarly to this”
Real-world output · 1
Over 300 games, zines and visual novels on itch.io and a Steam release have been built with it.
“I use personal applications written in Decker on a daily basis.”
Caveats and dissent
Nostalgia project · 1
One commenter calls it a waste of time for real, presentable projects in 2026.
“if you're going to have aspirations that this is useful today (2026) with a real project then its a complete waste of time.”
Often compared with
Who recommends it in their own words
Threads where it came up
- Decker 2 mentions
- Four Years with Decker 1 mention
- Show HN: Capsule – Single-file web apps that save their data into SQLite 1 mention
- Decker Fantasy Camp 2026 1 mention
- Show HN: Gemini 3 imagines Hacker News as a HyperCard stack in 1994 1 mention
Data: decker.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 6
“I love it, thanks for creating this.”
“Decker works similarly to this”
“I use personal applications written in Decker on a daily basis.”
“if you're going to have aspirations that this is useful today (2026) with a real project then its a complete waste of time.”
“If y'all never seen Decker, it _is_ cute”
“check out Decker https://beyondloom.com/decker/ Super fun to use.”