#1
The classic email sending library for PHP
22K starsJun 6, 2026 pushproductivity-automationPHPEmail
$ npx skills add PHPMailer/PHPMailerAlternatives
Castor alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
Current skill
Castor
🦫 A lightweight and modern task runner for Automation, CI/CD & DevOps.
85
Quality
82
Trust
546
Stars
#2
CLI tool and python library that converts the output of popular command-line tools, file-types, and common strings to JSON, YAML, or Dictionaries. This allows piping of output to tools like jq and simplifying automation scripts.
8.6K starsApr 22, 2026 pushproductivity-automationPythonCLI
$ npx skills add kellyjonbrazil/jc#3
🔥 Feature-rich interactive Jira command line.
5.7K starsJan 20, 2026 pushproductivity-automationGoProductivity
$ npx skills add ankitpokhrel/jira-cli#4
:fire: Command-line tool to delete merged Git branches
912 starsJun 14, 2026 pushproductivity-automationPythonCLI
$ npx skills add hartwork/git-delete-merged-branches#5
Manage many git repos with sanity 从容管理多个git库
1.9K starsApr 22, 2026 pushproductivity-automationPythonProductivity
$ npx skills add nosarthur/gita#6
The file management automation tool.
3.1K starsJun 15, 2026 pushproductivity-automationPythonCLI
$ npx skills add tfeldmann/organize#7
电视剧/番剧自动化重命名工具, 一键批量改名. 可配合QBittorrent下载后自动重命名, 方便Emby自动刮削. 支持Windows, Linux, MacOS, Docker 和 群晖套件环境运行
1.5K starsMay 19, 2025 pushproductivity-automationPythonCLI
$ npx skills add Nriver/Episode-ReName#8
CLI and local web plain text note‑taking, bookmarking, and archiving with linking, tagging, filtering, search, Git versioning & syncing, Pandoc conversion, + more, in a single portable script.
8.2K starsJun 13, 2026 pushproductivity-automationShellProductivity
$ npx skills add xwmx/nb#9
macOS command line tool for developers – The ultimate tool to manage your Mac. It provides a huge set of command line commands that automatize the usage of your Mac.
9.1K starsFeb 28, 2026 pushproductivity-automationShellProductivity
$ npx skills add guarinogabriel/Mac-CLI#10
Collect your thoughts and notes without leaving the command line.
7.3K starsMay 28, 2026 pushproductivity-automationPythonProductivity
$ npx skills add jrnl-org/jrnl#11
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#12
😎🏖️🐬 Your new, 𝙧𝙞𝙙𝙤𝙣𝙠𝙪𝙡𝙞𝙘𝙞𝙤𝙪𝙨𝙡𝙮 smart clipboard manager
5.8K starsMay 6, 2026 pushproductivity-automationC++Productivity
$ npx skills add Slackadays/Clipboard#13
Converts CSS styles into inline style attributes in your HTML code.
947 starsJun 14, 2026 pushproductivity-automationPHPEmail
$ npx skills add MyIntervals/emogrifier#14
A simple timetracker for the command line. It saves a log of all tracked activities as a plaintext file and allows you to create flexible reports.
836 starsMar 25, 2026 pushproductivity-automationRustProductivity
$ npx skills add nikolassv/bartib#15
Passbolt Community Edition (CE) API. The JSON API for the open source password manager for teams!
6.0K starsJun 11, 2026 pushproductivity-automationPHPProductivity
$ npx skills add passbolt/passbolt_api#16
A hackable, minimal, fast TUI file explorer
4.8K starsDec 24, 2025 pushproductivity-automationRustProductivity
$ npx skills add sayanarijit/xplrHow 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 Castor 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.