#1
The best free and open-source automated time tracker. Cross-platform, extensible, privacy-focused.
18K starsJun 11, 2026 pushproductivity-automationPythonProductivity
$ npx skills add ActivityWatch/activitywatchAlternatives
FlatRedBall alternatives for AI agents.
Compare similar skills by workflow fit, trust score, quality, GitHub adoption, maintenance, and install readiness.
Current skill
FlatRedBall
Cross-platform 2D game engine focused on ultimate productivity built in .NET
82
Quality
84
Trust
559
Stars
#2
A cross-platform .NET library for IMAP, POP3, and SMTP.
6.8K starsJun 12, 2026 pushproductivity-automationC#Email
$ npx skills add jstedfast/MailKit#3
:mag: Quick file search & app launcher for Windows with community-made plugins
15K starsJun 15, 2026 pushproductivity-automationC#Productivity
$ npx skills add Flow-Launcher/Flow.Launcher#4
A .NET MIME creation and parser library with support for S/MIME, PGP, DKIM, TNEF and Unix mbox spools.
2.0K starsJun 15, 2026 pushproductivity-automationC#Email
$ npx skills add jstedfast/MimeKit#5
A fast, lightweight text editor for Markdown, JSON, YAML, and TOML files. Built with Rust and egui for a native, responsive experience.
1.6K starsJun 16, 2026 pushproductivity-automationRustProductivity
$ npx skills add OlaProeis/Ferrite#6
🎨 Powerful, minimalistic, cross-platform, opensource note-taking app
1.9K starsJun 16, 2026 pushproductivity-automationDartProductivity
$ npx skills add LinwoodDev/Butterfly#7
The Official Twilio SendGrid C#, .NetStandard, .NetCore API Library
1.1K starsJul 23, 2024 pushproductivity-automationC#Email
$ npx skills add sendgrid/sendgrid-csharp#8
A complete Getting Things Done (GTD) productivity system for desktop and mobile.
1.1K starsJun 16, 2026 pushproductivity-automationTypeScriptProductivity
$ npx skills add dongdongbh/Mindwtr#9
A cross-platform context-aware key remapper.
1.1K starsJun 14, 2026 pushproductivity-automationC++Productivity
$ npx skills add houmain/keymapper#10
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#11
Virtual whiteboard for sketching hand-drawn like diagrams
125K starsJun 16, 2026 pushproductivity-automationTypeScriptProductivity
$ npx skills add excalidraw/excalidraw#12
🙃 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#13
开源白板工具（SaaS），一体化白板，包含思维导图、流程图、自由画等。All in one open-source whiteboard tool with mind, flowchart, freehand and etc.
14K starsJun 16, 2026 pushproductivity-automationTypeScriptProductivity
$ npx skills add plait-board/drawnix#14
The free and privacy-friendly screen recorder with no limits 🎥
18K starsJun 11, 2026 pushproductivity-automationJavaScriptProductivity
$ npx skills add alyssaxuu/screenity#15
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#16
Agentic AI Infrastructure for magnifying HUMAN capabilities.
16K starsMay 20, 2026 pushproductivity-automationTypeScriptProductivity
$ npx skills add danielmiessler/Personal_AI_InfrastructureHow 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 FlatRedBall 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.