The note-taking app
for developers

Rich text and code blocks, syntax highlighting, and various themes. Available for macOS.

Download for macOS GitHub

Free to download. macOS 14+.

Rook

Notebooks

CLI Quick Refs3

kubectl quick ref

Docker commands

Git workflows

Work Notes2

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kubectl quick ref

Commands for managing context, pods, deployments.

Contexts

bash

1  kubectl config get-contexts
2  kubectl config use-context <name>
3  kubectl config current-context

Pods

bash

1  kubectl get pods -n <namespace>
2  kubectl logs <pod-name> --tail=100 -f
3  kubectl exec -it <pod-name> -- /bin/sh

Deployments

bash

1  kubectl rollout restart deployment <name>
2  kubectl rollout status deployment <name>
3  kubectl delete pod <pod-name> --grace-period=0

Rook

kubectl quick ref

Commands for managing context, pods, deployments.

bash

kubectl config get-contexts
kubectl config use-context <name>
kubectl get pods -n <ns>
kubectl logs <pod> --tail=100 -f

SwiftPythonTypeScriptGoRust

Code Blocks

17 languages with syntax highlighting

HBI{}☑

Rich Text + Code

Headings, lists, todos, code blocks

5 Themes

Dark, Light, Terminal, Paper, Midnight

Local & Private

No cloud, no account, your machine

Themes

Five built-in themes, each with its own syntax highlighting

Rook

Notebooks

DSA Practice3

Binary Search

Two Pointers

BFS / DFS

System Design2

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Binary Search

A divide-and-conquer algorithm that locates a target in a sorted array by repeatedly halving the search space. Runs in O(log n) time and O(1) space.

python

1  def binary_search(arr, target):
2      lo, hi = 0, len(arr) - 1
3      while lo <= hi:
4          mid = lo + (hi - lo) // 2
5          if arr[mid] == target:
6              return mid
7          elif arr[mid] < target:
8              lo = mid + 1
9          else:
10              hi = mid - 1
11      return -1

Rook

Binary Search

A divide-and-conquer algorithm for sorted arrays. Runs in O(log n) time.

python

def binary_search(arr, target):
  lo, hi = 0, len(arr) - 1
  while lo <= hi:
    mid = lo + (hi - lo) // 2
    if arr[mid] == target:
      return mid

Shortcuts

All the usual suspects, and a few more

New block

⌘↵

Code block

⌘⇧↵

Sidebar

⌘\

New note

⌘N

⌘F

Multi-cursor

⌥Click

Get Rook

For people who write prose and code.
Free, local, no account needed.

Download for macOS

Requires macOS 14 Sonoma or later.

The note-taking app for developers

kubectl quick ref

kubectl quick ref

Themes

Binary Search

Binary Search

Shortcuts

Get Rook

The note-taking app
for developers