







It's that time of the week again! Today, we're sharing Chalk, a document editor that shows how apps that need fine-grained permissioning can be built on spaces. Chalk is built on our last three releases!
Habitat's road to release: 04 Chalk
habitat.leaflet.pubAug 28, 2026 at 6:00 PM
Apps are too complex so maybe features should be ownable and tradable
Posted on Friday 29 Apr 2022. 1,955 words, 12 links. By Matt Webb.

Scratch – A minimalist markdown scratchpad
An offline-first, open source markdown note-taking app. No cloud, no account, no subscriptions.

Habitat's road to release: 04 Chalk - building [at] habitat
The one where we don't release an API :)
Habitat's road to release: 03 ReBAC on spaces - building [at] habitat
Fine-grained permissioning on top of spaces.
Magic Paper
Working notes by Michael Nielsen, November 2017. Followup to (but doesn't require) my notes on Chalktalk.
Graffiti: Enabling an Ecosystem of Personalized and Interoperable Social Applications
As part of the Digital Library's transition to Open Access, new features for researchers are available in the Premium Edition. Click here to learn more.

ClearBoard: a seamless medium for shared drawing and conversation with eye contact
As part of the Digital Library's transition to Open Access, new features for researchers are available in the Premium Edition. Click here to learn more.

Malleable software: Restoring user agency in a world of locked-down apps
The original promise of personal computing was a new kind of clay. Instead, we got appliances: built far away, sealed, unchangeable. In this essay, we envision malleable software: tools that users can reshape with minimal friction to suit their unique needs.

Permissioned Data Interlude: Spaces - Daniel's Leaflets
In which I retcon the naming of everything.
crawshaw - 2018-07-30
This content covers my recent exploration of writing internet services, iOS apps, and macOS programs as an indie developer.
Habitat's road to release: 02 sap for syncing permissioned spaces - building [at] habitat
A package to help apps keep permissioned data up-to-date.
Permissioned Spaces Made Pretty — Lexidraw
A drawing by @essentialrandom.bsky.social on Lexidraw

Very excited to be opening the sf work/shop for this fall. Applications are open now: everythingchanges.us/workshop/sf
speculative fiction work/shop | everything changes
everythingchanges.usAt Habitat, we've been thinking about what apps might need to build rich permission-ed interactions and interoperate. Here's our take ⤵️
Habitat's road to release: 03 ReBAC on spaces
habitat.leaflet.pub