AI tool comparison
Cal.diy vs Clicky
Which one should you ship with? Here is the side-by-side panel verdict, pricing read, reviewer split, and community vote comparison.
Productivity
Cal.diy
Cal.com, forked — all enterprise code removed, MIT licensed
50%
Panel ship
—
Community
Paid
Entry
Cal.diy is a community-maintained fork of Cal.com with all enterprise and commercial code stripped out — no Teams, no Organizations, no Insights, no SSO/SAML, and crucially, no license key required. Everything works out of the box under a pure MIT license. The goal is a truly self-hostable, zero-commercial-strings scheduling platform for individuals and small teams who don't need enterprise features but do need full data ownership. The technical stack is unchanged from Cal.com: Next.js, React, tRPC, Prisma ORM, and Tailwind CSS, with support for Google Calendar, Outlook, Daily.co video, email notifications, and standard event type booking flows. The project effectively resolves the "open core trap" by maintaining a clean split: if you want enterprise features, pay Cal.com. If you want a completely free, auditable, no-vendor-lock scheduling system, Cal.diy is the answer. With 41.5k stars (inherited from the Cal.com fork lineage), it has massive visibility. The maintainers are explicit that this is best suited for advanced self-hosters with server admin experience, not a one-click deploy for non-technical users. But for developers who want scheduling infrastructure without SaaS dependencies, it's arguably the cleanest option available.
Productivity
Clicky
AI assistant that lives next to your cursor and reads your screen
75%
Panel ship
—
Community
Free
Entry
Clicky is a Mac application that surfaces an AI assistant inline — directly adjacent to your cursor — without requiring you to switch windows or paste context manually. The app maintains persistent screen awareness, reading what's in front of you and using that context to answer questions, guide tasks, and make suggestions relevant to what you're doing in any application. Unlike clipboard-based AI tools that require explicit copy-paste workflows, Clicky works through ambient screen reading: you invoke it with a hotkey, it understands the current screen context automatically, and responds inline. The approach is closer to GitHub Copilot's ghost-text model than a chat sidebar — the assistant lives where your attention already is. The indie approach prioritizes a single, focused Mac use case rather than trying to be a cross-platform agent platform. Early Product Hunt reception highlighted the overlay UI and the speed of context capture as standout experiences. For knowledge workers who context-switch constantly between reference material, documentation, and writing tools, the cursor-adjacent model reduces the friction of asking a question by eliminating the need to describe what you're looking at.
Reviewer scorecard
“The open core model has always been a tension with Cal.com — features gated behind enterprise licensing in a supposedly open-source project. Cal.diy resolves that cleanly. The stack is familiar, the MIT license is genuine, and for anyone building a product that needs scheduling infrastructure, this is the right starting point.”
“The screen-aware context capture is the killer feature — I'm tired of pasting error messages into chat windows. If Clicky accurately reads terminal output and stack traces without me doing anything, that alone justifies the install. The hotkey-invoke pattern feels like the right UX for async assistance.”
“This is a maintenance burden in disguise. You're now responsible for keeping a large, complex Next.js codebase patched, secure, and up-to-date with upstream Cal.com changes — changes that may or may not land in the DIY fork on any predictable schedule. For most teams, Cal.com's free tier or Calendly is simply less operational overhead.”
“Persistent screen reading is a significant privacy surface. What data is captured, where it goes, and how it's retained are crucial questions that indie tools often underspecify. This space is also crowded — Cursor, Copilot, and a dozen similar tools already compete for this workflow. What's Clicky's durable advantage?”
“Scheduling is increasingly the integration surface AI agents use to take real-world actions — booking meetings, blocking time, managing availability across workflows. Having a fully controllable, self-hosted scheduling layer that AI agents can write to without SaaS rate limits or webhook restrictions is a genuine infrastructure advantage for agentic systems.”
“Cursor-adjacent AI is the right mental model for ambient assistance. We've been training users to alt-tab to a chat window for 3 years; tools like Clicky train the reflex that AI is contextually available wherever attention lands. This interaction paradigm will win.”
“For content creators or solopreneurs who just need a Calendly replacement, self-hosting a full Next.js stack is overkill. The UX of the base Cal.com is fine but not exceptional, and the enterprise features you're losing (like organization-level insights) are actually useful for managing content calendar coordination across a team.”
“As someone who constantly switches between design specs, documentation, and writing tools, cursor-adjacent AI is genuinely useful. No more describing a UI element in a chat window — Clicky can just see it. The overlay aesthetic is clean and the indie origin means it'll iterate fast on creator feedback.”
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