{"category":{"slug":"self-hosted-applicant-tracking","label":"Self-hosted applicant tracking systems"},"methodology_url":"https://www.orbator.io/ai-index/methodology","license":"Free to use with attribution to orbator.io","date":"2026-08-21","engine":null,"available_dates":["2026-09-08","2026-08-21","2026-08-20","2026-08-10","2026-08-09","2026-07-29","2026-07-25","2026-07-22","2026-07-05","2026-07-04","2026-06-17"],"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":"2026-08-21","prompt_intent":"best_in_category","excerpt":"For a startup hiring your first ~20 people, you don't need enterprise-grade complexity — you need something cheap/free to run, low-maintenance, and easy for a small team to use without training. Based on current options, here's how I'd rank them:\n\n## Top recommendation: OpenCATS\nOpenCATS is the grandfather of open source applicant tracking, originally released around 2007, and it has been the defa","excerpt_withheld":false,"withheld_reason":null,"highlights":[{"start":271,"end":279,"name":"OpenCATS"},{"start":280,"end":288,"name":"OpenCATS"}]},{"engine":"anthropic","answered_on":"2026-08-21","prompt_intent":"best_in_category","excerpt":"If keeping candidate data entirely off third-party servers is the priority, you want an ATS you can self-host on your own infrastructure, with a permissive/copyleft open-source license and no mandatory cloud dependency. Here are the strongest options:\n\n## Top picks for full data sovereignty\n\n**OpenCATS** — the most established option. It's been around since the mid-2000s and remains actively maint","excerpt_withheld":false,"withheld_reason":null,"highlights":[{"start":295,"end":303,"name":"OpenCATS"}]},{"engine":"anthropic","answered_on":"2026-08-21","prompt_intent":"recommendation","excerpt":"For genuinely self-hosted setups, the strongest options are the ones where the ATS and HRMS live in the *same* platform (avoiding brittle third-party syncing), rather than a standalone open-source ATS bolted onto a separate HR system. Here's how the main contenders stack up:\n\n## Best overall: ERPNext / Frappe HR\nERPNext is an open source ERP built on the Frappe framework, and its HRMS module inclu","excerpt_withheld":false,"withheld_reason":null,"highlights":[{"start":294,"end":301,"name":"ERPNext"},{"start":304,"end":310,"name":"Frappe"},{"start":314,"end":321,"name":"ERPNext"},{"start":357,"end":363,"name":"Frappe"}]},{"engine":"anthropic","answered_on":"2026-08-21","prompt_intent":"recommendation","excerpt":"## Short answer: **OpenCATS** (or a modern alternative like **Reqcore**) — both self-hosted, giving you full control over where data lives.\n\nFor a government agency where data residency is the primary driver, the key requirement isn't a specific brand — it's **self-hosting**, since that's what lets you legally guarantee data never leaves your jurisdiction. Here's how the main options stack up:\n\n##","excerpt_withheld":false,"withheld_reason":null,"highlights":[{"start":19,"end":27,"name":"OpenCATS"},{"start":62,"end":69,"name":"Reqcore"}]},{"engine":"anthropic","answered_on":"2026-08-21","prompt_intent":"alternatives","excerpt":"Here's a rundown of the main open-source ATS options that can replace expensive cloud recruiting platforms, based on current information:\n\n## Top Open-Source ATS Options\n\n**OpenCATS** is the most established option. It is the most established open source recruiting software (ATS) as of 2026, with applicant tracking, resume parsing, and pipeline management for self-hosted deployment. That said, Ope","excerpt_withheld":false,"withheld_reason":null,"highlights":[{"start":173,"end":181,"name":"OpenCATS"}]},{"engine":"anthropic","answered_on":"2026-08-21","prompt_intent":"comparison","excerpt":"Self-hosted ATS platforms fall into two rough categories — legacy standalone tools and recruiting modules bolted onto larger HR/ERP suites — and which one makes sense depends heavily on your volume and technical resources. Here's how it breaks down:\n\n## The core tradeoff\n\nThe open source ATS market in 2026 splits into two categories: legacy PHP systems (OpenCATS, CandidATS, Sentrifugo) that work b","excerpt_withheld":false,"withheld_reason":null,"highlights":[{"start":356,"end":364,"name":"OpenCATS"},{"start":366,"end":375,"name":"CandidATS"},{"start":377,"end":387,"name":"Sentrifugo"}]},{"engine":"anthropic","answered_on":"2026-08-21","prompt_intent":"problem_solving","excerpt":"Here's a practical breakdown of your self-hosting options, from most mature to newest, plus a general deployment path.\n\n## Best self-hostable options\n\n**OpenCATS** — The most established option. OpenCATS is a free, open-source applicant tracking system for managing recruitment, candidate resumes, job postings, and interview scheduling for HR teams. It receives applications via job boards or direct","excerpt_withheld":false,"withheld_reason":null,"highlights":[{"start":153,"end":161,"name":"OpenCATS"},{"start":195,"end":203,"name":"OpenCATS"},{"start":266,"end":277,"name":"Recruitment"}]}]}]}