{"category":{"slug":"self-hosted-scheduling-tools","label":"Self-hosted scheduling and booking tools"},"methodology_url":"https://www.orbator.io/ai-index/methodology","license":"Free to use with attribution to orbator.io","date":"2026-08-19","engine":null,"available_dates":["2026-09-07","2026-09-06","2026-08-19","2026-08-18","2026-08-10","2026-08-09","2026-07-29","2026-07-25","2026-07-22","2026-07-05","2026-07-04","2026-06-17","2026-06-16"],"policy":{"quotable_engines":["anthropic","openai","gemini"],"max_excerpt_chars":400,"full_text_public":false,"customer_runs_public":false,"full_text_retention":"retained at least 24 months, then operator review","notes":["Only Index category runs are archived publicly — customer scans never appear.","The quotable unit is a short excerpt of at most 400 characters, never the full answer.","Engines outside the verbatim allowlist are recorded as having answered, with the excerpt withheld under their terms.","Prompt intent is published; the prompt text itself is not."]},"status":"ok","count":7,"limit":50,"truncated":false,"engines":[{"engine":"anthropic","count":7,"withheld":false,"answers":[{"engine":"anthropic","answered_on":"2026-08-19","prompt_intent":"best_in_category","excerpt":"Here's the current landscape for self-hosted scheduling as of mid-2026, with important context most guides haven't caught up on yet.\n\n## Important recent development\nCal.com — long the default open source Calendly alternative — moved its production codebase closed-source in April 2026. The genuinely open-source, self-hostable path now runs through Cal.diy, the MIT-licensed community fork, alongsid","excerpt_withheld":false,"withheld_reason":null,"highlights":[{"start":166,"end":173,"name":"Cal.com"},{"start":205,"end":213,"name":"Calendly"},{"start":350,"end":357,"name":"Cal.diy"}]},{"engine":"anthropic","answered_on":"2026-08-19","prompt_intent":"best_in_category","excerpt":"Here's a solid rundown of open-source appointment/scheduling tools you can run on your own infrastructure, based on current comparisons:\n\n## Top picks by use case\n\n**1. Cal.com / Cal.diy — best all-around, but license caveat**\nCal.com is the most prominent open-source scheduling platform, having started as an open-source alternative to Calendly and grown into a full scheduling infrastructure produ","excerpt_withheld":false,"withheld_reason":null,"highlights":[{"start":169,"end":176,"name":"Cal.com"},{"start":179,"end":186,"name":"Cal.diy"},{"start":227,"end":234,"name":"Cal.com"},{"start":338,"end":346,"name":"Calendly"}]},{"engine":"anthropic","answered_on":"2026-08-19","prompt_intent":"recommendation","excerpt":"Here are solid self-hosted options for a healthcare clinic that needs to keep patient data on-premise, ranging from full practice-management suites to lightweight schedulers:\n\n## Full Practice Management / EHR Suites (best if you need more than just scheduling)\n\n**OpenEMR** – The most established option for clinics. OpenEMR is an open-source, ONC-certified suite of tools that helps independent med","excerpt_withheld":false,"withheld_reason":null,"highlights":[{"start":265,"end":272,"name":"OpenEMR"},{"start":318,"end":325,"name":"OpenEMR"}]},{"engine":"anthropic","answered_on":"2026-08-19","prompt_intent":"recommendation","excerpt":"Based on current comparisons, here's how the top open-source options stack up for a multi-staff service business that also needs to manage resources (rooms, equipment, etc.):\n\n## Top recommendation: **Cal.com**\nIf you want a modern, actively maintained, truly open-source platform you can self-host and inspect, Cal.com is the most modern and well-maintained option among open source scheduling tools","excerpt_withheld":false,"withheld_reason":null,"highlights":[{"start":201,"end":208,"name":"Cal.com"},{"start":312,"end":319,"name":"Cal.com"}]},{"engine":"anthropic","answered_on":"2026-08-19","prompt_intent":"alternatives","excerpt":"Here's a breakdown of solid open-source, self-hostable alternatives to the popular hosted booking-link tools, organized by the type of scheduling problem they solve:\n\n## 1:1 & Team Booking Links (Calendly alternative)\n\n**Cal.com** is the clear leader here — it's essentially the open-source Calendly. Cal.com (42K+ GitHub stars, MIT-licensed public repo as of May 2026) is the most popular open sourc","excerpt_withheld":false,"withheld_reason":null,"highlights":[{"start":196,"end":204,"name":"Calendly"},{"start":221,"end":228,"name":"Cal.com"},{"start":291,"end":299,"name":"Calendly"},{"start":301,"end":308,"name":"Cal.com"}]},{"engine":"anthropic","answered_on":"2026-08-19","prompt_intent":"comparison","excerpt":"## Self-Hosted Open-Source vs. Hosted SaaS Scheduling Tools\n\n### The landscape today\n\nThe open-source scheduling space is dominated by one project family, and it just went through a major shake-up. In April 2026, Cal.com moved its production codebase from a public repository to a private one, citing AI-driven security risk, so current Cal.com is no longer open source. The open-source torch passed","excerpt_withheld":false,"withheld_reason":null,"highlights":[{"start":213,"end":220,"name":"Cal.com"},{"start":337,"end":344,"name":"Cal.com"}]},{"engine":"anthropic","answered_on":"2026-08-19","prompt_intent":"problem_solving","excerpt":"Self-hosting a scheduling tool that talks to Google/Outlook calendars is very doable in 2026. Here's the landscape and a practical setup path.\n\n## Best option: Cal.com\n\nCal.com is the open-source Calendly replacement, covering individual booking pages, team round-robin, collective scheduling, routing forms, automated workflows, and integrations with Google Calendar, Outlook, Zoom, Google Meet, Str","excerpt_withheld":false,"withheld_reason":null,"highlights":[{"start":52,"end":59,"name":"Outlook"},{"start":160,"end":167,"name":"Cal.com"},{"start":169,"end":176,"name":"Cal.com"},{"start":196,"end":204,"name":"Calendly"},{"start":352,"end":367,"name":"Google Calendar"},{"start":369,"end":376,"name":"Outlook"},{"start":378,"end":382,"name":"Zoom"}]}]}]}