TOOLS · TOOL
Unsure Calculator
The Unsure Calculator is an online tool that lets you calculate with numbers you’re not sure about.
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Editors, converters and utilities that open in a tab and just work.
TOOLS · TOOL
TOOLS · LEARNING
Explorable Physics
Interactive notes for algebra-based physics with explorable explanations.
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TOOLS · TOOL
Azgaar
Free web app that helps fantasy writers, game masters, and cartographers create and edit fantasy maps
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TOOLS · MAC APP
LingShu
Open-source, model-agnostic macOS agent for verified code, documents, slides, and computer actions. !Open-Source SoftwareOSS Icon !FreewareFreeware Icon
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TOOLS · TYPOGRAPHY
Google Fonts
Every free font worth using, previewed with your own text before you download.
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TOOLS · MAC APP
Nimclip
Local-first clipboard history manager with search, tags, and image support. !Open-Source SoftwareOSS Icon !FreewareFreeware Icon !Native AppNative Icon
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TOOLS · SELF-HOSTED
Apache Airflow
Platform to programmatically author, schedule, and monitor workflows. (Source Code) Apache-2.0 Python/Docker
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TOOLS · MAC APP
SystemEQ for Mac
Free, open-source system-wide parametric equalizer with AutoEQ presets, hearing calibration, and real-time visualization. !Open-Source SoftwareOSS Icon !FreewareFreeware Icon
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TOOLS · MAC APP
Agenttrace
Local-first TUI for inspecting AI coding agent sessions, costs, tokens, latency, tool failures, health, and diffs. !Open-Source SoftwareOSS Icon !FreewareFreeware Icon
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TOOLS · MAC APP
LiteEdit
Fast, native macOS code editor under 1 MB — Swift and AppKit, no Electron. !Open-Source SoftwareOSS Icon !FreewareFreeware Icon
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TOOLS · FREE TIER
Mozilla Observatory
Find and fix security vulnerabilities in your site.
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TOOLS · CSS
CSS Diner
Interactive gamified tutorial for learning selection with CSS.
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TOOLS · MAC APP
User Flows Plugin
Generating flow diagrams from Artboards. !Open-Source SoftwareOSS Icon !FreewareFreeware Icon
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TOOLS · CSS
CSS Grid PlayGround
Simple tutorial to learn CSS Grid from Mozilla.
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