#1
Leantime is a goals focused project management system for non-project managers. Building with ADHD, Autism, and dyslexia in mind.
10K starsJun 14, 2026 pushproductivity-automationPHPCalendar
$ npx skills add Leantime/leantimeAlternatives
Kalendar alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
Current skill
Kalendar
Full featured, responsive, lightweight calendar in the browser.
72
Quality
76
Trust
299
Stars
#2
DayPicker is a customizable date picker component for React. Add date pickers, calendars, and date inputs to your web applications.
6.8K starsJun 16, 2026 pushproductivity-automationTypeScriptCalendar
$ npx skills add gpbl/react-day-picker#3
A next.js web application that integrates AI capabilities with draw.io diagrams. This app allows you to create, modify, and enhance diagrams through natural language commands and AI-assisted visualization.
32K starsJun 16, 2026 pushproductivity-automationTypeScriptProductivity
$ npx skills add DayuanJiang/next-ai-draw-io#4
Virtual whiteboard for sketching hand-drawn like diagrams
125K starsJun 16, 2026 pushproductivity-automationTypeScriptProductivity
$ npx skills add excalidraw/excalidraw#5
๐ Build and send emails using React
19K starsJun 12, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add resend/react-email#6
MJML: the only framework that makes responsive-email easy
18K starsJun 12, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add mjmlio/mjml#7
Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.
15K starsMay 24, 2026 pushproductivity-automationPythonEmail
$ npx skills add mail-in-a-box/mailinabox#8
Omnivore is a complete, open source read-it-later solution for people who like reading.
16K starsMar 26, 2026 pushproductivity-automationTypeScriptProductivity
$ npx skills add omnivore-app/omnivore#9
An Obsidian plugin that embeds Claude Code/Codex as an AI collaborator in your vault
13K starsJun 12, 2026 pushproductivity-automationTypeScriptProductivity
$ npx skills add YishenTu/claudian#10
A Cloudflare-based email service | ๅบไบ Cloudflare ็้ฎ็ฎฑๆๅก | Cloudflare Email ้ฎ็ฎฑ Mail
11K starsJun 9, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add maillab/cloud-mail#11
Thunderbird for Android โ Open Source Email App for Android (fka K-9 Mail)
14K starsJun 16, 2026 pushproductivity-automationKotlinEmail
$ npx skills add thunderbird/thunderbird-android#12
Agentic AI Infrastructure for magnifying HUMAN capabilities.
16K starsMay 20, 2026 pushproductivity-automationTypeScriptProductivity
$ npx skills add danielmiessler/LifeOS#13
Agentic AI Infrastructure for magnifying HUMAN capabilities.
16K starsMay 20, 2026 pushproductivity-automationTypeScriptProductivity
$ npx skills add danielmiessler/Personal_AI_Infrastructure#14
A Privacy-first, Cross-platform Text Expander written in Rust
14K starsJun 14, 2026 pushproductivity-automationRustProductivity
$ npx skills add espanso/espanso#15
โ๏ธ Send e-mails with Node.JS โ easy as cake!
18K starsJun 15, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add nodemailer/nodemailer#16
Experience email the way you want with Mail0 โ the first open source email app that puts your privacy and safety first. Join the discord: https://mail0.link/discord
11K starsMay 26, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add Mail-0/ZeroHow to choose
When should you switch?
Use an alternative when it has a clearer install path, higher trust score, fresher maintenance, or better platform fit for your current agent stack. Keep Kalendar if it already passes your workflow test and repository review.
Next step
Compare top candidates side by side
Open the compare page, test the install commands in a sandbox, and check each repository before using a skill in production.