Star200+

Alternatives

Syncall alternatives for AI agents.

Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.

Compare shortlistView Syncall

Current skill

Syncall

Bi-directional synchronization between services such as Taskwarrior, Google Calendar, Notion, Asana, and more

79
Quality
83
Trust
609
Stars
#1

Leantime

Similarity 125Trust 90Excellent 100

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/leantime
#2

React Calendar

Similarity 115Trust 87Excellent 100

Ultimate calendar for your React app.

3.8K starsJul 27, 2026 pushproductivity-automationTypeScriptCalendar
$ npx skills add wojtekmaj/react-calendar
#3

Cal Heatmap

Similarity 114Trust 88Excellent 97

Cal-Heatmap is a javascript charting library to create a time-series calendar heatmap

3.1K starsJul 20, 2026 pushproductivity-automationTypeScriptCalendar
$ npx skills add wa0x6e/cal-heatmap
#4

Activitywatch

Similarity 110Trust 91Excellent 100

The best free and open-source automated time tracker. Cross-platform, extensible, privacy-focused.

19K starsAug 6, 2026 pushproductivity-automationPythonProductivity
$ npx skills add ActivityWatch/activitywatch
#5

Mailinabox

Similarity 110Trust 90Excellent 100

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
#6

Planify

Similarity 110Trust 88Excellent 100

Task manager with Todoist, Nextcloud & CalDAV support designed for GNOME

5.6K starsAug 14, 2026 pushproductivity-automationValaProductivity
$ npx skills add alainm23/planify
#7

Frappe

Similarity 109Trust 88Excellent 100

Low code web framework for real world applications, in Python and Javascript

10K starsJun 16, 2026 pushproductivity-automationPythonEmail
$ npx skills add frappe/frappe
#8

Next AI Draw Io

Similarity 105Trust 90Excellent 100

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
#9

Excalidraw

Similarity 105Trust 88Excellent 100

Virtual whiteboard for sketching hand-drawn like diagrams

125K starsJun 16, 2026 pushproductivity-automationTypeScriptProductivity
$ npx skills add excalidraw/excalidraw
#10

Ohmyzsh

Similarity 104Trust 86Excellent 100

๐Ÿ™ƒ A delightful community-driven (with 2,500+ contributors) framework for managing your zsh configuration. Includes 300+ optional plugins (rails, git, macOS, hub, docker, homebrew, node, php, python, etc), 140+ themes to spice up your morning, and an auto-update tool that makes it easy to keep up with the latest updates from the community.

188K starsJun 15, 2026 pushproductivity-automationShellProductivity
$ npx skills add ohmyzsh/ohmyzsh
#11

Novu

Similarity 104Trust 85Excellent 100

The open-source communication infrastructure for agents and products

39K starsJun 16, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add novuhq/novu
#12

Screenity

Similarity 104Trust 90Excellent 100

The free and privacy-friendly screen recorder with no limits ๐ŸŽฅ

18K starsAug 18, 2026 pushproductivity-automationJavaScriptProductivity
$ npx skills add alyssaxuu/screenity
#13

PHPMailer

Similarity 104Trust 88Excellent 100

The classic email sending library for PHP

22K starsJun 6, 2026 pushproductivity-automationPHPEmail
$ npx skills add PHPMailer/PHPMailer
#14

Mailspring

Similarity 104Trust 90Excellent 100

:love_letter: A beautiful, fast and fully open source mail client for Mac, Windows and Linux.

18K starsJun 15, 2026 pushproductivity-automationJavaScriptEmail
$ npx skills add Foundry376/Mailspring
#15

React Email

Similarity 104Trust 88Excellent 100

๐Ÿ’Œ Build and send emails using React

19K starsJun 12, 2026 pushproductivity-automationTypeScriptEmail
$ npx skills add resend/react-email
#16

BillionMail

Similarity 104Trust 90Excellent 100

BillionMail gives you open-source MailServer, NewsLetter, Email Marketing โ€” fully self-hosted, dev-friendly, and free from monthly fees. Join the discord: https://discord.gg/asfXzBUhZr

15K starsJun 11, 2026 pushproductivity-automationGoEmail
$ npx skills add Billionmail/BillionMail

How 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 Syncall 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.