AI tool comparison
Cal.diy vs Dune
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
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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
Dune
A 3-key Mac keypad that changes what it does based on your active app
75%
Panel ship
—
Community
Paid
Entry
Dune is a compact hardware keypad for Mac that detects your active application and automatically remaps its three keys in real time — no manual profile switching required. In GitHub it raises PRs and approves changes. In Zoom it mutes your mic and joins calls. In Claude Code or Cursor it triggers your agentic workflows directly from your desk. The device syncs with your calendar so meeting-join actions appear automatically before calls. It supports Zoom, Teams, and Google Meet natively. The maker community angle is notable: Dune users can program custom agent triggers to kick off any AI workflow from a physical button press. Dune topped Product Hunt's weekly leaderboard for the week of April 20 with 589 upvotes — a strong signal that developer-focused hardware AI accessories are a real market. This isn't just a fancy macro pad: the context awareness removes the mental overhead of remembering which key does what across 12 different apps.
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.”
“I lose an embarrassing amount of time hunting for the right shortcut in the right app. Having a physical device that reconfigures itself automatically is exactly the kind of ambient tooling I want on my desk. The AI agent trigger support is the killer feature.”
“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.”
“Three keys is a very limited surface area for the price, and context detection reliability in niche dev tools is going to be hit-or-miss. A well-configured Stream Deck with a few profiles does 90% of this for less money.”
“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.”
“Physical buttons for AI agents are the beginning of a real ambient computing shift. As agentic workflows mature, having dedicated hardware triggers rather than keyboard shortcuts buried in menus is going to feel necessary, not optional.”
“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.”
“Context-switching kills creative flow. Having a keypad that automatically knows I'm in Figma versus in my writing app and changes its keys accordingly is worth a lot. Would buy this immediately for video editing alone.”
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